The invention is directed to a valve closing member (12) for cooperating with a valve seat (14), comprising: a body (16) a front circular face (16.5) forming a central protrusion (16.2) along a longitudinal axis of said body; a seal (18) forming a ring fitted on the front circular face (16.5) and around the central protrusion (16.2); and- a retainer (20) forming a ring surrounding the seal (18) and attached to the body (16) for retaining said seal (18) on said body (16); wherein the seal (18) shows a radially inner surface (18.2) contacting a radially outer surface (16.4) of the central protrusion (16.2), said radially inner surface (18.2) and radially outer surface (16.4) being both cylindrical, said radially outer surface (16.4) showing at least one circular groove (16.3) into which the seal is radially pressed by the retainer (20).
F16K 1/02 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle
F16K 1/30 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces specially adapted for pressure containers
The invention is directed to a regulator (2) for compressed gas, comprising a body (4) with a gas inlet (6), a gas outlet (8) and a gas passage (10) fluidly interconnecting said gas inlet (6) and gas outlet (8); a pressure reducer (14) with, in the gas passage (10), a shut-off device and a movable assembly operatively connected to the shut-off device and delimiting with the body (4) a regulating chamber (14.6) downstream of the shut-off device; a pressure relief device (16) in the gas passage (10) downstream of the regulating chamber; and a flow restriction (22) in the gas passage (10) upstream of the shut-off device, dimensioned for reducing the gas pressure at the gas outlet (8) under a maximum pressure value when the pressure relief device (16) is opened and the shut-off device is opened.
The invention is directed to a valve (2) comprising a body (4) with an inlet, an outlet and a passage fluidly interconnecting said inlet and outlet; a shut-off device of the passage, with an actuating member (18) movable along a longitudinal axis; a hand operating device (6) of the actuating member, for selectively opening or closing the passage, and comprising a support element (10) and a rotating element (8) with at least one contact surface configured for sliding along at least one ramped surface on the support element (10), or vice versa, so as to convert rotation of the rotating element (8) into a translation of the actuating member (8); wherein the body (4) comprises two arms (4.1) extending longitudinally and diametrically opposed relative to the longitudinal axis, with distal ends holding the support element (10).
F16K 1/30 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces specially adapted for pressure containers
F16K 31/02 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic
F16K 31/24 - Operating meansReleasing devices actuated by fluid actuated by a float actuating a lift valve with a transmission with parts linked together from a single float to a single valve
F16K 31/56 - Mechanical actuating means without stable intermediate position, e.g. with snap action
F16K 31/524 - Mechanical actuating means with crank, eccentric, or cam with a cam
4.
DIFFERENTIAL PRESSURE OPENING AND EXCESS FLOW CLOSING VALVE FOR GAS CYLINDER
The invention is directed to a valve (2) for a fluid, comprising: a body (4) with an inlet (6), an outlet (8) and a passage (10) fluidly interconnecting the inlet (6) and outlet (8); a shut-off device (12) housed in the body (4) and configured for selectively opening and closing the passage (10), the shut-off device (12) comprising a main seat (20), a main closing element (18) forming a channel (18.1, 18.2) extending there through and a pilot seat (24), a pilot closing element (22) housed in the main closing element (18), a first compression spring (26), and a second compression spring (28); an actuating device (14) of the shut-off device (12). The second compression spring (28) is operatively mounted between the main closing element (18) and the body (4) and the first compression spring (26) is stronger than the second compression spring (28).
The invention is directed to a device (2) for being mounted on a compressed gas cylinder, comprising a body (4) with a longitudinally protruding threaded portion (4.2) for engaging with a neck of the compressed gas cylinder, and a through-hole (12) extending longitudinally along the body (4) and the longitudinally protruding threaded portion (4.2); a tube (10) extending through the through-hole (12) in the body and housing, at a closed distal end (10.1) of said tube, a temperature sensor for the compressed gas; wherein the tube (10) comprises a proximal end (10.2) forming a shoulder (10.2.1) resting on a bottom (4.1.2) of a bore (4.1.1) formed in the body (4).
The invention is directed to a valve (2) for compressed gas, comprising a body (4) extending longitudinally, with a gas inlet (15) at a lower end of said body, a gas outlet (6) and a gas passage (12) fluidly interconnecting said gas inlet and said gas outlet; a shut-off device (16) housed in the body (4) and configured for selectively shutting-off and opening the gas passage (12); a lever (8) pivotally mounted on the body (4), at an upper end of said body, and configured for actuating the shut-off device (16); a hook (10) pivotally mounted on the lever for engaging with a counter- shape on the body (4) and thereby holding said lever in a folded position along the body; wherein the upper end of the body (4) comprises a cylindrical wall (4.3) delimiting an upper bore, the counter-shape being an upper edge (4.3.1) of said cylindrical wall (4.3).
LUXEMBOURG INSTITUTE OF SCIENCE AND TECHNOLOGY (LIST) (Luxembourg)
LUXEMBOURG PATENT COMPANY S.A. (Luxembourg)
Inventor
Polesel, Jérôme
Gerard, Mathieu
El Hachemi, Mohamed
Allioua, Abdelmoumin
Abstract
The invention is directed to an electric generator (102) comprising a rotor (106) with permanent magnets, configured for rotating about a rotation axis; a stator (104) comprising at least one magnetic yoke (108, 110) with arms (108.1, 110.1) extending axially inside or outside of the rotor (106) so as to be adjacent to a radial inner or outer side, respectively, of the rotor; wherein the arms (108.1, 110.1) of the at least one magnetic yoke (108, 110) are circumferentially distributed so as to form a slot between each pair of adjacent arms, each slot and each arm showing a width. The widths of the arms (108.1, 110.1) and/or the widths of the slots have different values distributed along the circumference. The invention is also directed to a valve comprising the electric generator (102) equipped with a turbine wheel for being driven by a flow of gas in the valve.
Enhanced handwheel cap The invention is directed to a handwheel (1) for a valve, comprising: a core (3) for being fastened to a rotating axle of the valve; and a cap (11) positioned on the core (3); the cap (11) comprising a cover wall on an upper face of the core (3), and projections (17A) extending axially from the cover wall into holes (7B) of the core (3), said projections (17A) being configured for being inserted axially into said holes (7B) and thereby fastening the cap (11) to said core (3).
B29C 45/00 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mouldApparatus therefor
F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
G05G 1/10 - Details, e.g. of discs, knobs, wheels or handles
10.
GAS PRESSURE REDUCER WITH CAM COMMANDED SHUT-OFF VALVE
The invention is directed to a device (2) for regulating the pressure of a compressed gas, comprising a body (4) with a gas inlet (6), a gas outlet (8) and a gas passage (10) fluidly interconnecting said inlet and outlet; a mobile element (26) carrying a shutter (30) cooperating with a seat (16.2) in the gas passage (10), said shutter and said seat forming a regulating valve (16.2, 30); a hand-wheel operatively linked to a spindle (46) rotatably mounted on the body (4.1); wherein the spindle (46) is hollow and houses a spigot (48) with a cam, said spigot being linked in rotation with said spindle and cooperating with a counter-cam spigot (50) movable in translation but not in rotation relative to the body, and acting on the mobile element (26) or on a shut-off valve (12) for selectively shutting-off and opening the gas passage (10).
The invention is directed to a device (2) for regulating the pressure of a compressed gas, comprising a body (4) with a gas inlet (6), a gas outlet (8) and a gas passage (10); a mobile element (26) biased by a main spring (28) and carrying a shutter (30) cooperating with a seat (16.2) in the gas passage (10), said shutter and said seat forming a regulating valve, a shut-off valve (12) with a shutter (14) and a seat (16.1) in the gas passage (10) upstream of the regulating valve; an actuation assembly (46, 48, 50, 52) of the shut-off valve (12); wherein the shutter (14) of the shut-off valve (12) comprises a stem (14.3) extending through the mobile element (26) and the shutter (30) of said element, for cooperating with the actuation assembly (46, 48, 50, 52) located in front of said element.
The invention is directed to a capacitive level gauge (2) for a container of a medium, comprising a body (4) configured to being mounted on the container and with an inner side (4.1) in contact with the medium when mounted on said container; an electrical lead (18) extending in a gas tight manner through the body (4); two parallel lamellar electrodes (8, 10) mounted on the body (4), a first one (8) of said electrodes being electrically connected to the electrical lead (18) and the second one (10) of said electrodes being electrically connected to the body (4); wherein the electrical lead (18) is protruding on the inner side (4.1) and the first electrode (8) has an end lateral face (8.1) in pressure contact with the electrical lead (18), said contact providing the electrical connection between said electrode and lead.
G01F 23/26 - Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
13.
CAPACITIVE GAUGE WITH LAMELLAR ELECTRODES HELD BY SPACER(S)
The invention is directed to a capacitive level gauge (2) for a container of a medium like compressed gas or liquid, comprising a body (4) configured for being mounted on the container; two parallel lamellar electrodes (8, 10) extending from the body (4), for being inside the container and in contact with the medium; wherein the capacitive level gauge further comprises at least one spacer (12) with two slots engaging with the two electrodes (8, 10), respectively, maintaining a constant distance between said electrodes.
G01F 23/26 - Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
A valve system having a valve position indicator is disclosed. The valve position indicator allows for viewing of the valve position from one or more viewing locations. In one example, the valve position indicator includes a side valve open/close indicator and a top valve open/close indicator on a valve assembly. An indicator locking mechanism securely locks the valve position indicator in alignment with a position of a control valve.
F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
B01D 53/04 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
15.
GAS FLOW DEVICE WITH GAS FLOW SELECTOR MOUNTED BY INSERTION
The invention is directed to a gas flow device (2) comprising a body (4) comprising a circular wall (8) with an outer edge (8.1) opening out, said wall forming a cavity (8.2); a gas pressure reducer (26) housed in the body (4); a gas flow selector (12) downstream of the gas pressure reducer (26) and mounted in the cavity (8.2); and a gas outlet fitting (18) connected to the gas flow selector (12) and extending through a radial aperture (8.3) of the circular wall (8). The aperture (8.3) forms a notch on the outer edge (8.1) of the cylindrical wall (8), allowing insertion, in the cavity (8.2), of the gas flow selector (12) equipped with the gas outlet fitting (18).
Method for manufacturing a valve body (4; 60) comprising: machining a first bore (81) along a first axis (A) for receiving a shut-off device; machining a second bore (82) along a second axis (B) for receiving a residual pressure device; and machining a third bore (83) along a third axis (C) for receiving a functional element; wherein the first (A) and second (B) axes are perpendicular to each other, wherein the third axis (C) is parallel to the second axis (B) and coplanar to the first (A) and second (B) axes, and wherein the first (81), second (82) and third bores (83) are machined in the same setup. The invention also relates to a valve with a body (4) manufactured by means of this method.
The invention is directed to a silenced head (2) for a gas discharge, in particular for a fire extinguishing gas discharge, comprising a base (4) with an opening (4.3, 14) forming a gas input; a closed wall (6) made of porous material and extending longitudinally from the base so as to form a distal opening; a front wall (8) made of porous material closing the distal opening of the closed wall (6); a fastening ring (10) arranged against an outer face of the front wall (8) and attached to the base (4) by longitudinal screws (12); wherein the ring (10) comprises a ring portion (10.1) and webs (10.3) extending radially from the ring portion (10.1) so as to form contact surfaces for the front wall (8).
in situ.in situ. The invention further relates to a kit with such a tap assembly and a charging adapter to feed electrical current to the tap assembly from a standard power socket. The invention further relates to a charging method for a tap assembly.
LUXEMBOURG INSTITUTE OF SCIENCE AND TECHNOLOGY (LIST) (Luxembourg)
LUXEMBOURG PATENT COMPANY S.A. (Luxembourg)
Inventor
Gerard, Mathieu
Polesel Maris, Jérôme
Abstract
The invention is directed to an electric generator (2) comprising a rotor housing (16); a rotor (14) mounted in the rotor housing (16), with two opposed main faces; permanent magnets (18) circumferentially arranged in front of one of the main faces of the rotor (14); coils (22) circumferentially arranged in front of the other one of the main faces of the rotor (14); the rotor (14) being configured for, upon rotation, vary a magnetic flux through the coils (22) produced by the permanent magnets (18), so as to generate electromotive forces in said coils; wherein the coils (22) are arranged outside of the rotor housing (16). The invention is also directed to a valve for gas cylinder, equipped with a corresponding electric generator.
H02K 21/38 - Synchronous motors having permanent magnetsSynchronous generators having permanent magnets with rotating flux distributors, and armatures and magnets both stationary
H02K 7/18 - Structural association of electric generators with mechanical driving motors, e.g.with turbines
A sleeve (8.1) for an electromagnetic device (2, 4) comprises a cylindrical wall forming a cavity for receiving a magnetic plunger (16, 30), and configured for being surrounded by an electromagnet (10), wherein the cylindrical wall is made of a non-ferromagnetic material and comprises at least one external groove (8.1.3) filled with ferromagnetic material. A method of manufacturing the sleeve (8.1) comprises the following steps: (a) forming at least one external groove (8.1.3) on a rod-shaped blank of non-ferromagnetic material; (b) filling the at least one groove with the ferromagnetic material by a welding process; (c) machining an outer surface and optionally an inner surface of the blank so as to form the sleeve (8.1).
An electromagnetic valve (4) for a fluid, comprises a body (18) with a fluid inlet (22), a fluid outlet (24); a shut-off device comprising a main seat (20) in the passage; a main closure element (12) mobile in longitudinal direction, with a front face (12.1) cooperating with the main seat (20) and with a channel (12.3) fluidly interconnecting the front face (12.1) and an opposed rear face; a pilot closure element (14) cooperating with a pilot seat (26) on the main closure element (12); and a piston (44) at the centre of the front face (12.1), configured for cooperating with the main seat (20) so as to form with the front face (12.1) in contact with the main seat (20) a cavity (48) fluidly connected to the channel (12.3), a building up of an inlet fluid pressure in said cavity (48) biasing the main closure element (12) away from the main seat (20).
LUXEMBOURG INSTITUTE OF SCIENCE AND TECHNOLOGY (LIST) (Luxembourg)
LUXEMBOURG PATENT COMPANY S.A. (Luxembourg)
Inventor
Gerard, Mathieu
Polesel Maris, Jérôme
Abstract
The invention is directed to an electric generator (2) comprising: a rotor (12) with permanent magnets, configured for rotating about a rotation axis; at least one magnetic yoke (28, 30) with at least two arms (28.1, 30.1) extending axially inside or outside of the rotor (12) so as to be adjacent to the radial inner or outer side, respectively, of the rotor; wherein the permanent magnets are arranged according to an Halbach array so as to maximize the magnetic field on the radial side of the rotor adjacent to the arms (28.1, 30.1) of the at least one yoke (28, 30). The invention is also directed to a valve for gas cylinder, equipped with a corresponding electric generator (2).
The invention is directed to a valve (1) for regulating the pressure and/or flow of pressurized gas, comprising: a body (2) with a gas inlet (2.1), a gas outlet (2.2) and a gas passage connecting the outlet (2.2) with the inlet (2.1); the pressure being regulated by means of a pre-stressed spring; wherein the tension of said spring is set by the position of an abutment element that can slide in the valve body; the position of said abutment element being regulated by means of a lever (3) that can pivot with respect to the valve body (2), wherein a pair of connecting rods (4) is interposed between the lever (3) and the abutment element.
F16K 1/30 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces specially adapted for pressure containers
25.
COMPACT GAS CYLINDER VALVE WITH RESIDUAL PRESSURE FUNCTION
The invention is directed to a gas cylinder valve (2) comprising a body (4) with an inlet (18), an outlet (40) and a passage (20) fluidly interconnecting said inlet and outlet; a shut-off device (22) with a seat (26) formed in the passage (20) and a shutter (24) movable along a longitudinal axis (7) for cooperating with said seat; a spindle (12) rotatably mounted on the body (4) along the longitudinal axis (7) and cooperating with the shutter (24) such as to move said shutter upon rotation of said spindle; a residual pressure device (28) fluidly downstream of the shut-off device (22), with a seat (32) formed in the passage (20) and a piston (30) movable along a transversal axis (38. At least one of the shutter (24) and the piston (30) shows a recess or opening (24.4) accommodating the other of said shutter and piston.
The invention is directed to a protective and/or handling cover (2; 102) for a tap (26; 126) of a gas cylinder assembly (22; 122), said cover comprising a housing (4; 104) for receiving the tap (26; 126); a first handle (6; 106) located at the top of the housing (4; 104); and a second handle (8; 108) located on a rear face (28; 128) of the housing (4; 104), for handling the gas cylinder assembly (22; 122), said handle comprising a rod (8.1; 108.1) forming with a portion of the housing (4; 104) a slot (30; 130) so that said rod can be grasped and encircled through said slot by the fingers of an operator. The portion of the housing forming the slot (30; 130) forms a smooth and continuous surface (32; 132) that extends vertically so as to from a resting surface for the operator's hand.
The invention is directed to a gas coupling unit (2) with a cartridge (14) comprising a cylindrical body (30) to be mounted in a housing (4) of the coupling unit (2), said body forming an inner passage for the gas; an elongated shutter (34) slidable in the cylindrical body (30) and cooperating with a seat (30.1) on said body for closing the gas passage, said shutter (34) comprising a front end to be contacted by a front tubular portion (44.3) of a plug (44) cooperating with the coupling unit (2); wherein the elongate shutter (34) is tubular; and the body (30) comprises a front sleeve (30.2; 130.2; 230.2), said sleeve housing the front end of the shutter (34; 134; 234) and having a cylindrical outer surface.
F16L 37/22 - Couplings of the quick-acting type in which the connection is maintained by means of balls, rollers, or helical springs under radial pressure between the parts
F16L 37/42 - Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in only one of two pipe-end fittings with a lift valve being opened automatically when the coupling is applied the valve having an axial bore communicating with lateral apertures
The invention is directed to a gas pressure regulator (2) comprising a body (4) with a gas inlet (6), a gas outlet (8) and a passage (20) fluidly interconnecting said inlet with said outlet; a piston (22) with a main portion (22.1) and a tubular portion (22.2), said tubular portion being sealingly and slidably housed in the body (4) and forming a portion (20.1) of the passage in said body; and a valve seat (24) in the body (4), said seat being configured to cooperate with a regulating edge (26) of the tubular portion (22.2) of the piston (22) for varying a flow section of the passage depending on the gas pressure in a regulating chamber (30) delimited by the piston (22) and downstream of said seat (24). The tubular portion (22.2) traverses the main portion (22.1) of the piston (22) and the regulating edge (26) of said tubular portion (22.2) is on a downstream side of said portion.
The invention is directed to a gas pressure regulator (2) comprising a body (4) with a longitudinal axis, a first end face (4.1) and a second end face (4.2), said first and second end faces being opposed along said axis; a first stage valve or regulator (16) mounted on the first end face (4.1) of the body (4); a second stage valve or regulator (18) mounted on the second end face (4.2) of the body (4); wherein the body (4) comprises a gas inlet (6), a gas outlet (8) and a gas passage (20) interconnecting said inlet and outlet via the first and second stage valve(s) or regulator(s) (16, 18); and the body (4) is generally cylindrical around the longitudinal axis.
The invention is directed to a movable part (14) of a regulator (2) for compressed gas, comprising a piston (141); a tube (142) extending from the piston (141) and with a sealing edge (24) for cooperating with a seat (20) of the regulator (2) for regulating the flow and/or pressure of the gas. The tube (142) houses at least one noise reducing element (28) that modifies a flow of gas in said tube so as to reduce a generation of noise by said flow. The invention is also directed to a regulator (2) comprising such a movable part (14).
The invention is directed to Regulator (2) for compressed gas, comprising a body (4) with an inlet (6), an outlet (8) and a channel (10) between said inlet (6) and outlet (8); a regulating valve (12) with a seat (121) in the channel (10) and a movable closure member (122) upstream of said seat (121); a piston (16) housed in the body (4) and mechanically linked with the closure member (122), said piston (16) delimiting with said body (4) a regulating chamber (14) downstream of the regulating valve (12) and controlling said valve (12); a resilient member (18) able to exert a biasing force on the piston (16) towards the regulating valve (12); a residual pressure valve (32) with a first annular contact surface (321) on the piston (16) and a second annular contact surface (322) on the body (4). The first and second annular contact surfaces (321, 322) are located at the periphery of the piston (16) and the chamber (14), respectively.
The invention is directed to Valve device (2) for a gas cylinder (4), comprising a body (6) with a gas inlet (8), a gas outlet (10) and a passage fluidly interconnecting said inlet (8) and outlet (10); at least a regulating and/or shut-off valve (12) in the passage; a sensing unit (20) mounted on the body (6) and fluidly connected with the passage; an electronic control unit (26); an electrical connection (22, 24) between the electronic control unit (26) and the sensing unit (20); wherein the electrical connection (22, 24) comprises a connector (22) configured for engaging with the sensing unit (20) independently of the relative angular position over a range of at least 20° of said connector (22) on said unit (20).
The invention is directed to a regulator (2) for compressed gas, comprising a body (4) with an inlet (6), an outlet (8) and a channel (10) between said inlet (6) and outlet (8); a regulating valve (12) with a seat (121) in the channel (10) and a movable closure member (122) upstream of said seat (121); a piston (16) housed in the body (4) and mechanically linked with the closure member (122), said piston (16) delimiting with said body (4) a regulating chamber (14) downstream of the regulating valve (12) and controlling said valve (12); a resilient member (18) able to exert a biasing force on the piston (16) towards the regulating valve (12); and a pressure relief valve (16, 30) comprising a movable element (30) interposed between the resilient member (18) and the piston (16).
The invention is directed to a refill device (2) for a gas cylinder, comprising a body (4) with a first port (6) for connecting to a refill port (12) of the gas cylinder, and a second port (8) for connecting to a refill gas source, and a passage (10) interconnecting said first and second ports (6, 8); and a shut-off valve (20, 20', 22) for shutting-off the passage (10). The shut-off valve (20, 20', 22) is located the first port (6).
The invention is directed to a tap (2) for gas, in particular for compressed gas, comprising a body (4) with a gas inlet (6), a gas outlet (8) and a passage (12) fluidly interconnecting said inlet (6) and outlet (8); a shutter (16) movable in translation in the body (4) for cooperating with a seat (14) for shutting-off the passage (12); a rotating and translating spindle (24) configured for moving the shutter (16) towards the seat (14); a disk-shaped membrane (20) between the spindle (24) and the shutter (16), said membrane (20) having its periphery attached to the body (4) in a gas tight manner so as to delimit the passage (12); and a pressure disk (28) between the spindle (24) and the membrane (20). The membrane (20) and the pressure disk (28) are generally flat and the pressure disk (28) has a constant thickness.
F16K 41/12 - Spindle sealings with diaphragm, e.g. shaped as bellows or tube with approximately flat diaphragm
F16K 1/30 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces specially adapted for pressure containers
The invention is directed to a gas pressure reducer (2) comprising a body (10) with an inlet (4) intended to be in flow communication with a high pressure gas source; an outlet (6) intended to deliver the gas at a predetermined low pressure; a passage (8) through the body (10) in flow communication with the inlet (4) and with the outlet (6). A resilient element (24) engages with a pressure reducing piston (18) with a through flow path (22) formed by a needle (20). The needle (20) cooperates with a movable seat (16). The outlet pressure acts on the piston (18) in opposite direction than the spring (24) so as to urge the path (22) against the seat (16) in order to reduce the gas flow through the path (22). Pressure setting means comprise an electric actuator (32), such as a stepper motor, which moves the seat (16) along the moving direction of the piston (18) in order to set the predetermined outlet pressure.
The invention is directed to a valve (2) for pressurized gas or chemical agent. The valve (2) comprises: a body (4) with: an inlet (8), an outlet (10), and a passage (6) which connects the inlet (8) with the outlet (10) and which includes a seat (16). The valve (2) further comprises a sliding piston (18) able to engage with the seat (16) in order to close the passage (6) and a telescopic extension (30) sliding against the passage in order to guide the piston (18) in the passage (6) at least between the open position and the closed position. The pressure difference between opposite faces of the piston pulls away the piston (18) and the telescopic extension (30) from the seat (16) in order to open the passage, the passage (6) remaining closed under pressure equilibrium. The invention is also directed to a fire extinguishing system.
F16K 15/18 - Check valves with actuating mechanismCombined check valves and actuated valves
F16K 17/08 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded with special arrangements for providing a large discharge passage
The invention is directed to a flow limiter for a fluid, comprising an element (14) movable along a longitudinal axis (10) of said element and with at least one fluid passage (20) extending through said element (14) parallel to the longitudinal axis (10), with an inlet (20 1 ) and an outlet (20 2); a flow limiting surface (24) configured for cooperating with a seat (26); and at least one flow constraining section (22) arranged in the at least one fluid passage (20) and configured for converting the flow into a biasing force for moving the flow limiting surface (24) towards the seat (26) in order to reduce and/or close the flow. The at least one flow constraining section (22) is located at the outlet(s) of the at least one fluid passage (20) and is configured for radially deviating the flow from said passage(s) (20).
The invention is directed to a pressure reducer device (2) for mounting on a gas cylinder, comprising: a pressure reducer (14); and a flow selector (16) fluidly connected to the pressure reducer (14), downstream of said reducer (14). The device further comprises a stepper motor (22) adapted to actuate the flow selector (16).
The invention is directed to a method for calculating the remaining usage time of a gas cylinder equipped with a pressure reducer, the method comprising the following steps: (a) measuring the pressure of the gas in the cylinder; (b) calculating the variation of pressure of the gas in the cylinder over time while gas is outputted; (c) calculating a remaining usage time Tr based on the measured pressure in the cylinder and the calculated variation of pressure. Step (c) takes into account characteristics of the pressure reducer relative to variations of its nominal flow rate along the decrease of its inlet pressure while emptying the cylinder.
The invention is directed to a tap (12) for gas cylinder, comprising a body (14) with a threaded gas inlet extending along a longitudinal axis (16) and adapted to be connected to a collar of the gas cylinder, a gas outlet (10) and a gas delivery passage interconnecting said inlet and outlet; a shut-off device of the passage, said device comprising a seat in the delivery passage and a shutter extending through and cooperating with said seat; and a lever (82) adapted for moving the shutter against a delivery flow direction in the delivery passage from the inlet towards the outlet, in order to open the shut-off device. The lever (82) is rotatable around a transversal axis (19) that is perpendicular to the longitudinal axis (16) or that forms an angle with said perpendicular that is less than 30°, preferably less than 20°, more preferably less than 10°.
The invention is directed to a cover (2) for a tap of a gas cylinder, said cover (2) comprising a shell (4) for housing the tap, said shell comprising a front area for an indicator, a wheel (14) for adjusting the outlet pressure and/or flow rate, and/or at least one outlet connector (12) of the tap. The front area of the shell is a part (43) that is distinct from, and configured to be attached to, the rest (41) of the shell (4).
The invention is directed to a tap for gas cylinder, comprising a body (16) with an inlet (18), an outlet (20) and a passage (22) connecting said inlet with said outlet; an electronic indicator (32) of the status of the tap and/or cylinder, said indicator being mounted on the body (16); a pressure sensor (36) electrically connected to the electronic indicator (32) and providing to said indicator the gas pressure at the inlet. The pressure sensor (36) is mounted on the body (16) at a location that is distinct from the mounting location of the electronic indicator (32). The invention is also directed to a tap assembly (2) comprising the above tap and a cover (4) housing said tap.
The invention is directed to a cover (6) for a tap of a gas cylinder, comprising a shell (8) for housing the tap; and a handle (10) linked to the shell (8), said handle (10) being for manipulating the gas cylinder. The handle (10) comprises a battery housing for supplying the tap with electrical energy.
The invention is directed to a gas storage assembly. The assembly (2) comprises a gas cylinder, a tap (6) fixed to the gas cylinder, a cover (6) with a shell (8) protecting and housing the tap (6). The shell (8) includes: a front face with a hand-wheel and connecting plugs; a rear face on the opposite of the front face; a first element (10); a second element (12). The rear face comprises a rear opening formed in both the first element (10) and the second element (12) which are an upper half shell and a lower half shell respectively. A rear closure (16) part closes the rear opening and is removably mounted to the lower half shell (12) and to the tap (6). The opening provides a wide view for mounting and testing the tap (6) when mounted to the gas cylinder.
The invention is directed to a hand-wheel (6) for adjusting an outlet pressure and/or a flow-rate of a tap (12) for a gas cylinder, said hand-wheel (6) comprising a body (61); and a transparent cover (62) fixed on the body (61). The hand-wheel (6) further comprises indicia (38) arranged between the transparent cover (62) and the body (61) so as to be visible by a user but not in contact with the fingers of said user. The invention is also directed to a tap for gas cylinder, comprising such a hand-wheel, as well as to a tap assembly comprising such a tap and a cover housing said tap.
The invention is directed to a tap assembly (2) comprising a tap for a gas cylinder and a cover (4) housing the tap, said cover (4) comprising a hand-wheel (16) and a shell (14). The shell (14) is made of two halves, and comprises a spherical outer surface. The outer surface has a spherical shape and the hand-wheel (16) partially forms the outer surface of the cover (4). The cover comprises two lateral protective wings (18) on both sides of the hand-wheel (16). The protective wings (18) define between them a protected space (22) in which the outer surface of the hand-wheel (16) is enclosed in order to protect the hand-wheel (16).
The invention is directed to an indicator (22) of the opening and/or closing status of a device controlling the flow of a fluid, such as a tap or a pressure reducer for compressed gas, comprising a sleeve-shaped support (24) to rotatably engage with a protruding portion (18) of a body of the device and from which an actuating spindle (20) extends along a longitudinal axis of said device; an indicator sleeve (26) axially sliding along the support (24); a rotor (28) to be fixed to the spindle (20) and comprising at its periphery a least one track (32) with a curved profile; and at least one track follower (30) extending radially from the indicator sleeve (26) through a longitudinal slot (242) in the support (24) and engaging with the at least one track (32).
F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
F16K 1/30 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces specially adapted for pressure containers
52.
SOL-GEL FORMULATIONS ENHANCING CORROSION RESISTANCE AND LUBRICATION PROPERTIES OF PRESSURE EQUIPMENT
The present invention discloses a compression fitting with double ferrule (Figure 1) whose nut (1) is coated with coatings providing corrosion resistance and lubrication properties. Those particular properties are provided by a sol-gel formulation comprising at least one titanium derivative, a first silicon-based derivative, an organic-based derivative. Said formulation further comprises a second and a third silicon-based derivative which are different from said first silicon-based derivative.
C09D 4/00 - Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond
C09D 133/12 - Homopolymers or copolymers of methyl methacrylate
C09D 143/04 - Homopolymers or copolymers of monomers containing silicon
The invention is directed to an electromagnetic valve (2) comprising a main valve member (16) cooperating with a seat (12), a pilot valve member (20), a core (18) linked to the pilot valve member (20) and a counter-core (22) cooperating with the main valve member (16), said core (18) and counter-core (22) forming a first air- gap (30), and a solenoid (28) configured for producing a magnetic field in the first air-gap (30) for moving the core (18) towards the counter-core (22). The counter- core (22) forms with the bottom (144) of the armature (14) a second air-gap (32) where, in the presence of the magnetic field and after movement of the core (18) towards the counter-core (22), said counter-core (22) is magnetically attracted towards said bottom (144) so as to open the valve.
The invention is directed to a gauge body (4) for a container for pressurized gas, comprising a mounting surface (43) for mounting the body (4) to the container; an inner side (41) in contact with the pressurized gas when mounted on the container; an outer side (42) opposite to the inner side with regard to the mounting surface (43), said outer side (42) being outside of the container when the body is mounted on said container; an electrical lead (12) extending in a gas tight manner through the body (4) from the inner side (41) to the outer side (42). The electrical lead (12) comprises a metallic rod (121) and a bushing (123) around said rod, said bushing being mounted in a gas tight manner on the body (4).
G01F 23/26 - Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
The invention is directed to a valve actuating device (20) comprising a body (22) with a bore (221) and a bottom (222), an actuating element (24) sealingly housed in the bore (221) of the body (22) and forming a first chamber (25) with the body (22), a piston (26) sealingly extending through a bore (241) in the actuating element (24), said piston (26) and bore (241) delimiting a second actuating chamber (27), a passage for an auxiliary fluid between the first and second chambers (25, 27) so that a movement of the piston (26) in the bore (241) of the actuating member (24) can increase the pressure in the first chamber (25) and move the actuating element (24). The fluid passage comprises a restriction (28) and a check-valve (30), both arranged in parallel, so as to limit the flow of the auxiliary fluid from the second chamber (27) to the first chamber (25).
F16K 31/122 - Operating meansReleasing devices actuated by fluid the fluid acting on a piston
F16K 47/00 - Means in valves for absorbing fluid energy
F15B 11/072 - Combined pneumatic-hydraulic systems
F16K 1/30 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces specially adapted for pressure containers
The present invention discloses a fluid regulator that can achieve a low outlet pressure and a steady outlet flow under large outlet flow. The regulator comprises a valve body, a pressure-regulating device and a balance device. The valve body has an inlet fluid pressure cavity, an outlet fluid pressure cavity, and a throttling orifice in fluid communication with the inlet fluid pressure cavity and the outlet fluid pressure cavity. The pressure-regulating device comprises a lever, a sealing device connected to a first end of the lever and a diaphragm assembly connected to a second end of the lever. The balance device comprises a balance hole and a balance member. The balance hole is provided on the valve body, wherein the balance hole is positioned at one side of the lever fixing device and the throttling orifice is positioned at the other side of the lever fixing device. The balance member and the balance hole are provided at a same side of the lever fixing device and configured so that a fluid from the inlet fluid pressure cavity can exert a force on the second end of the lever via the balance hole and the balance member.
G05D 16/06 - Control of fluid pressure without auxiliary power the sensing element being a flexible member yielding to pressure, e.g. diaphragm, bellows, capsule
The invention is directed to a valve (2) for gas under pressure, in particular at temperatures below -100°C, comprising a body (4) with a gas inlet (6), a gas outlet (8) and a passage (10) connecting said inlet (6) with said outlet (8); a shut-off device (12) for closing the gas passage (10); a spindle (14) designed for operating the shut-off device (12); and at least one gasket (22, 24) between the spindle (14) and the body (4). The valve further comprises at least one cavity (122, 28) around the spindle (14) for accumulating particles separated from the at least one gasket (22, 24) while operating the spindle (14) and the shut-off device (12), in particular at temperatures below -100°C.
The invention is directed to a valve (10) for a gas tank (2), comprising a body (12) with a longitudinal axis to be mounted on an opening on a wall (43) of the gas tank (2), with a gas outlet port (14) and a gas refill port (20), a level gauge (18) with a pivoting float (46) for measuring the level of the liquid phase of the gas, an overfill protection device (22) with a pivoting float (26) for limiting refilling of the tank based on the level of the liquid phase of the gas. The pivoting float (46) of the level gauge pivots around a first axis (44) distant from the body (12), and the pivoting float of the overfill protection device is a distinct float (26) pivoting around a second axis (28) that is less distant from the body (12) than the first axis (44).
The invention is directed to a cover (4) for a tap of a gas cylinder (6), comprising a shell (7, 8) for housing the tap; and a hook (12) pivotally mounted on the shell (8), configured for securing the gas cylinder (6) to a horizontal bar (28). The shell (8) comprises reservations (30) on its external surface configured for receiving the hook (12) in a folded position so as to generally conform to said external surface. The invention is also directed to a gas storage assembly comprising a gas cylinder (6), a tap and a cover (4).
The invention is directed to a device (2) for regulating the pressure and/or flow of pressurized gas, comprising a body (4) with a gas inlet (6), a gas outlet (8) and a gas passage (101, 102, 103) connecting the outlet (8) with the inlet (6), a pressure reducer (12) and a flow selector (14) arranged downstream of the pressure reducer (12), a hand-wheel (22) rotatably mounted on the body (4) and cooperating with the flow selector (14) for adjusting said flow, and a pressure indicator (20) located at the centre of the hand-wheel (22). The device (2) comprises also a shaft (16) rigidly fixed to the body (4) and rotatably bearing the hand-wheel (22), said shaft (16) supporting the pressure reducer (20) and comprising a gas channel (18) fluidly connected to the gas passage (101) in the body (4).
The invention is directed to a device (2) for regulating the pressure and/or flow of pressurized gas, comprising a body (4) with a gas inlet (6), a gas outlet (8) and a gas passage (10, 26) connecting the outlet (8) with the inlet (6), a gas shut-off device comprising a seat (22) in the passage (10) and a movable closure element (24) cooperating with said seat (22) and a piston (12) carrying the closure element (24) and delimiting with the body (4) a low pressure chamber (28) downstream of the shut-off device (22, 24). The body (4) comprises a first portion (41) with the seat (22) and the inlet (6) and a second portion (42) housing the piston (12) and delimiting the low pressure chamber (28). The second portion (42) is movable relative to the first portion (41) between a closed position, and an open position.
F16K 1/30 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces specially adapted for pressure containers
G05D 16/10 - Control of fluid pressure without auxiliary power the sensing element being a piston or plunger
The invention is directed to a valve (12) for gas tank (2), comprising a body (14) with a first gas inlet (19), a gas outlet (28) and a first passage (18) connecting said inlet (19) with the outlet (28), a first electro-magnetic shut-off device (24) for shutting-off the first passage (18). The body further comprises a second inlet (21) and a second passage (22) connecting said inlet (21) with said outlet (28), and the valve further comprises a second electro-magnetic shut-off device (26) for shutting-off the second passage (22). The entry of the first passage (18) is in the liquid phase whereas the entry of the second passage (22) is in the vapor phase. Only the vapor phase is extracted when the vehicle is driven to a refilling station, in order to lower the pressure in the tank and enable refilling.
The invention is directed to a device (1) and a process for dissolving a gas into a liquid like carbonating a water based beverage, comprising a pump (4) for the liquid, a mixing venture nozzle (8) with a main inlet (10) fluidly connected to the pump (4), at least one side inlet (14) connectable to a source of pressurized gas (6), and an outlet. The device (1) comprises also a conical flow restrictor (24) fluidly downstream of the mixing venture nozzle (8), and a pipe (20) of a length of at least 0.5m fluidly interconnected between the mixing venture nozzle (8) and the flow restrictor (24).
The invention is directed to a method for improving the fatigue behavior of the body (2) of a gas valve, the body comprising at least two bores (4, 10) and at least one bore intersection (20) defining an internal volume; wherein the method comprises the following step: subjecting the internal volume to an autofrettage by applying a pressure of comprised between 100 MPa and 500 MPa by means of a liquid. 10. The invention is also directed to a gas valve body (2) comprising at least two bores (4, 10) and at least one bore intersection (20) defining an internal volume with an internal wall; wherein the internal wall is treated by autofrettage resulting in compressive stresses at the intersection or at least one of the intersections.
C21D 7/12 - Modifying the physical properties of iron or steel by deformation by cold working of the whole cross-section, e.g. of concrete reinforcing bars by expanding tubular bodies
C22F 1/05 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys of the Al-Si-Mg type, i.e. containing silicon and magnesium in approximately equal proportions
F16K 1/00 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
B23P 9/02 - Treating or finishing by applying pressure, e.g. knurling
C22F 1/04 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
65.
METALLIC BODY WITH THREADED PORT SUBJECT TO AUTOFRETTAGE
The invention is directed to a method for improving the mechanical behavior of a metallic body (4) comprising an internal volume for a fluid and at least one threaded connecting port (6, 8) to said internal volume, the method comprising a step of treatment by autofrettage of the internal volume by applying a pressure to a liquid inside said volume. The autofrettage step comprises closing the internal volume by screwing a plug (28) to each the at least one threaded connecting port (8), so that the thread(s) of said port(s) is/are also subject to the autofrettage treatment. The invention is also directed to a body (4) resulting from such a treatment, with compressive stresses at the root of one of the most carrying turns of the thread of each of the connecting ports. The compressive stresses improve the fatigue behavior of the body.
C21D 7/12 - Modifying the physical properties of iron or steel by deformation by cold working of the whole cross-section, e.g. of concrete reinforcing bars by expanding tubular bodies
C22F 1/04 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
B23P 9/02 - Treating or finishing by applying pressure, e.g. knurling
C22F 1/05 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys of the Al-Si-Mg type, i.e. containing silicon and magnesium in approximately equal proportions
The invention is directed to a gas valve (2) comprising a valve body (4) with a gas inlet (6), a gas outlet (8) and a gas passage (10) connecting the inlet (6) with the outlet (8), gas shut-off device in the gas passage (10), with a seat (14) on the valve body (4) and a movable closure member (16), an electromagnetic actuator (12) with an electric coil and a movable plunger configured for actuating the closure member (16) of the gas shut-off device, a sleeve extending through the coil and slidably receiving the movable plunger and wherein the sleeve is made of austenitic stainless steel. This avoids embrittlement problems when using the valve with hydrogen under high pressure.
F16K 31/40 - Operating meansReleasing devices actuated by fluid in which fluid from the conduit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor
67.
GAS VALVE WITH RUBBER SEAL PACKING ON THE CLOSING MEMBER
The invention is directed to a closing member (20) of a valve (2), preferably of a gas valve, comprising a body (22) generally circular around a longitudinal axis and with a shoulder (24), a rubber seal packing (26) disposed around the body (22) on the shoulder (24) and a sleeve (28) disposed around the seal packing (26) and the shoulder (24). The body (22) comprises a longitudinally extending surface (34) adjacent the shoulder (24) and receiving the seal packing (26), said surface (34) comprising at least one recess (34) filled by the seal packing (26).
The invention is directed to a valve (2) for a compressed gas cylinder (4), comprising: a valve body (6) with an inlet (8), an outlet (10) and a passage (12) connecting the inlet with the outlet; a shut-off device (20) of the passage (12) with an actuating pin (42) extending in the passage; a check-valve (18) between the shut-off device (20) and the inlet (8), the check valve comprising a seat (30) and a movable closing member (26) initially held at a position distant from said seat by contact with a guiding surface (22a) and movable past said position by the pin (42) so as to cooperate with said seat (30) and prevent a refilling flow of gas from the outlet (10) to the inlet (8). The guiding surface (22a) is on a tubular portion (22) fixed to the valve body (6) and comprising at least one radial aperture (24) so as to allow the refilling flow of gas to by-pass the closing member (26) when in the distant position.
This invention relates to an anti-decanting valve assembly (1, 10) comprising a valve body (2; 30, 40) having a fluid inlet (3) and a fluid outlet (5) as well as a lift valve (7) having a spindle (9, 90) movable between a closed position blocking fluid flow from the inlet (3) to the outlet (5) and an open position allowing fluid flow from the inlet (3) to the outlet (5). The valve assembly (1,10) further comprises a flow limiter (9) having a cage (8) guiding a ball (11) for limiting fluid flow from the inlet (3) to the outlet (5), wherein the cage (8) has a downstream portion for guiding movement of the spindle (9, 90) between its closed position and its open position and allowing the spindle (9, 90) to urge the ball in an upstream direction upon moving the spindle (9, 90) in the open position.
F16K 1/30 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces specially adapted for pressure containers
The invention relates to a device for regulating the flow rate and/or pressure of a fluid, such as valve for a pressure gas cylinder, comprising a reducing valve including a first plug designed to be moved in the normal flow direction of the fluid during closure. The reducing valve also comprises a plunger to which the plug is coupled. The face of the plunger that is oriented towards the first plug defines a regulation chamber together with the body. The aforementioned face also comprises a seal that engages with a corresponding surface of the body such as to form a second plug for maintaining residual pressure. The regulation device also comprises means for preloading and releasing a spring acting on the opposite face of the plunger.
The invention relates to a mechanical control device intended to be mounted on the body of a valve and/or pressure-reducing valve for a pressure gas cylinder. The device comprises a bell cap forming a space having a longitudinal axis, said bell cap being formed essentially by two hollow parts intended to be joined to one another in an opposing manner in relation to the longitudinal axis of the device.
A capacitive level gauge assembly for a container of pressurised or liquefied gas comprises a body (12) with a base (14) able to be fitted into an aperture of said container, and an electrical circuit (24) placed in the body; electrode-carrying means are sealingly fitted into said body and connected to said electrical circuit (24), said electrode-carrying means being configured to fixedly support two electrodes (18, 20) with a measurement space (22) between them. The electrode-carrying means comprise a metal holder (26) sealingly fitted into the tap body (12) and electrically isolated from the latter, the first electrode (18) being fixed to said metal holder (26), and the metal holder (26) being connected to the electrical circuit (24). The metal holder (26) comprises, at its free end, a coupling means (66) for the first electrode (18).
G01F 23/26 - Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
73.
TAP FOR A GAS CYLINDER HAVING A VISUAL PRESSURE INDICATOR
The invention relates to a device for controlling the flow and/or pressure of a pressurized gas, and specifically to a tap (2) for a pressurized-gas cylinder. The tap includes a body (4) having a gas inlet (8), a gas outlet (10), and a passage (8) connecting the inlet to the outlet. The tap also includes a valve (12, 14) for closing the passage (8), as well as a pressure indicator (20) downstream from the closing valve. The pressure indicator (20) is translatably operated and includes just two stable positions, i.e. one that corresponds to the presence of pressure, and the other to the absence of pressure.
The invention relates to an on-off pressure reducer (2) intended to be connected to a gas cylinder. The objective of the invention is to ensure that the device is closed and put into service by way of simple and reliable means at high pressures. A closing element (14, 16) is controlled by a mobile part (22) of the pressure reducer, forming a low-pressure chamber (20) of the device. The closing element (14, 16) is subjected to an elastic force (18) in the closing direction. A working spring (36) of the pressure reducer acts on the mobile part (22) in the opening direction. A rotary control member (38) working over at least one turn makes it possible to compress the working spring (36) into the position in which the device (2) is put into service. In the closed position, the plate (44) of the actuator of the control member is remote from the working spring (36).
F16K 31/528 - Mechanical actuating means with crank, eccentric, or cam with pin and slot
F16K 1/30 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces specially adapted for pressure containers
75.
GAS BOTTLE VALVE PROVIDED WITH A FLYWHEEL CONTROLLING A RESIDUAL-PRESSURE VALVE AND A STOP VALVE
The invention concerns a valve 2 for a pressurised gas bottle. Said valve comprises a body 4 with a gas inlet 7, a gas outlet (figures 1 and 2, reference 9) and a gas passage 10 connecting the inlet to the outlet. The valve 2 comprises a device for maintaining residual pressure 38 arranged on the gas passage 10. The valve further comprises a stop valve 14 for closing the gas passage 10, downstream from the device for maintaining residual pressure 38. A flywheel 8 for controlling the valve 2 acts on the stop valve 14 and on the device for maintaining residual pressure 38 via control rods 12 and 36, respectively. The flywheel comprises sliding tracks for the control rods. Said flywheel comprises a first position for filling the bottle wherein the device for maintaining residual pressure 38 is deactivated and the stop valve 14 is open, a second position for closing the bottle wherein the device for maintaining residual pressure 38 is activated and the stop valve is closed, and a third service position wherein the device for maintaining residual pressure 38 is activated and the stop valve 14 is open.
The invention relates to a cylinder valve (2) pressurized gas. The body (4) of the valve (2) includes a gas inlet (8), a gas outlet (not shown) and a passage (10) connecting the inlet to the outlet. The valve (2) also includes a closing/opening valve (26) (figure 2), a pressure reducer (12) and a device for reducing or closing the gas passage between said valve and a pressure reducer (12). The device includes an element (16) that is made of shape-memory alloy and positioned in a cavity (14) of the passage (10). Said element (16) includes an active deformable portion, the circular outer edge of which is capable of engaging with the inner surface of the cavity (14) in order to close the passage following a rise in temperature caused by combustion. Said combustion can be generated by adiabatic compression during the opening of the valve (26).
F17C 13/02 - Special adaptations of indicating, measuring, or monitoring equipment
F16K 1/30 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces specially adapted for pressure containers
F16K 17/38 - Safety valvesEqualising valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature
The invention is directed to a two-stage gas pressure reducer 2. It comprises a body 1 with an actuating rod 26 for actuating a shut-off valve, a first chamber 36 crossed by the rod 26 and delimited by a gas tight membrane 42 connected to the rod 26 and to the body 1. A disk spring 12 is placed on the membrane 42 and exerts a biasing force on the rod 26 against the force exerted by the gas on the membrane 42 in the first chamber 36. This constructions of pressure and/or flow reducer or at least controller allows a space reduction, provides a reduction of parts and a simplification of assembly.
G05D 16/06 - Control of fluid pressure without auxiliary power the sensing element being a flexible member yielding to pressure, e.g. diaphragm, bellows, capsule
78.
MANOMETER WITH LIGHT GUIDE, MONITORING DEVICE AND GAS DISTRIBUTION DEVICE EQUIPPED WITH THE MANOMETER
The invention deals with a display comprising a manometer 4 of the common type and a light guide 6 of annular cross section disposed around the housing of the manometer in such a way as to emit a luminous signalling radiation around the manometer and essentially directed towards an observer of said manometer. The display is intended to be integrated into a display surface 18 in such a way as to allow optimal visualization of the information. The activation of the light guide is dependent on electrical signals reflecting a binary state such as in particular the exceeding of a pressure threshold or the detecting of a valve or any control member in a given position. The light guide can comprise one or more luminous sources of different colours. The invention also deals with a device for distributing gas and a monitoring device for such a distributing device, equipped with one or more displays according to the invention.
The invention relates to a pressure reducer 10, in particular for enriching drinking water with carbon dioxide, comprising a housing 12 with an axially movable spring-loaded control body 24 in order to close a connection between an inlet 14 and an expansion chamber 22. The housing is equipped with an axially movable spring-loaded actuating piston 34 in order to displace the control body against the spring load of the control body dependent on the pressure in the expansion chamber and to open the connection. According to the invention, the housing is made of plastic, and the pressure reducer comprises a separately made insert 40, in particular made of metal, in particular brass, or a suitable plastic, in particular a glass fiber-reinforced polyamide. The insert is fixed between the inlet and the expansion chamber in the plastic housing. Said insert has a guiding bore 44, which is connected to the inlet and which supports the control body, and a connecting bore 46, which adjoins the guiding bore and which opens into the expansion chamber. The insert forms an annular shoulder surface between the connecting bore and the guiding bore, said shoulder surface interacting as a seating surface 32 with the seal 28 on the control body.
F16K 27/02 - Construction of housingsUse of materials therefor of lift valves
F16K 1/30 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces specially adapted for pressure containers
The invention relates to a cylinder valve (2) having a built-in residual pressure valve, said valve being openable with a view to filling the cylinder via an additional operation of the manual control wheel. The valve (2) includes a closing valve consisting of a first seal (12) engaging with a first seat (14). The residual pressure valve consists of a second seal (30) which, as a result of the force of a spring (32), engages with a second seat (24). The first and second seats are fully formed and translatable (10). A rod (26) for controlling the seal (12) of the closing valve comprises an abutment (28) capable of engaging with the first and second seats (14, 24) with a view to opening the residual pressure valve via an additional movement of the control rod (26).
F16K 1/30 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces specially adapted for pressure containers
81.
CYLINDER VALVE ASSEMBLED BY PERMANENT DEFORMATION AND CYLINDER HAVING A VALVE ASSEMBLED BY PERMANENT DEFORMATION
The invention relates to a cylinder valve (102) that includes a body (104) having a hollow portion defining a generally cylindrical wall (116) for tightly receiving a generally cylindrical member (118). The wall (116) is deformed by a method that uses a magnetic pulse that can be pressed against the member (118), which results in a cold weld providing a link having an exceptional mechanical strength and that is very easy to implement. Similarly, the invention relates to a cylinder for compressed gas, which comprises a neck de fining a generally cylindrical wall and receiving a generally cylindrical portion of the body of a valve at the inlet thereof. The wall (116) is deformed by a method that uses a magnetic pulse that is pressed against the body, which results in a cold weld providing a link having an exceptional mechanical strength and very easy to implement.
F16K 1/30 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces specially adapted for pressure containers
The invention relates to a valve device including a built-in expansion valve and a flow selector. The valve function is provided by a plug (10) mounted so as to be inverted. The expansion valve (14) is arranged laterally and communicates with a high-pressure chamber (18) immediately downstream from the plug (10) and with a low-pressure chamber (40) via a side passage. A device for mechanically controlling the plug (10) is provided in a chamber (34) sealingly separated from the high-pressure chamber (18) and from the low-pressure chamber (40). A flow selector in the form of a disc (28) with calibrated openings is provided in the low-pressure chamber (40), the disc (28) engaging with a passage (26) directly linked to the outlet (24) of the device. The mechanical control device engages with a control pin (22) of the disc (28).
F16K 1/30 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces specially adapted for pressure containers
83.
A HIGH PRESSURE GAS DISCHARGE VALVE FOR A FIRE-EXTINGUISHING OR EXPLOSION-PREVENTING SYSTEM
The proposed high pressure gas discharge valve for a fire-extinguishing or explosion- preventing system comprises: a valve body (14) with a gas inlet channel (16) and a gas outlet channel (18); a valve seat (24) arranged between the channels (16; 18); and a triggering chamber (26); a closing piston (34) which is slidably movable within the valve body (14) and has a first end portion forming a pressure surface (44) in the triggering chamber (26), a second end portion forming a sealing surface, with which it can be sealingly pressed against the valve seat (24), and a pressure compensation channel (60) via which the triggering chamber (26) communicates with the inlet channel (16) when the closing piston (34) rests on the valve seat (24); a triggering port (30) in communication with the triggering chamber (26), for connecting thereto a low pressure triggering device (12) that is capable of generating a pressure drop in the triggering chamber (26); and a pressure-reducing valve (64) for reducing a pressure (P1) of high pressure gas to a reduced pressure (P2) suitable for the low pressure triggering device (12). According to the proposed invention, the pressure-reducing valve (64) is integrated into the closing piston (34) designed so as to seal the pressure compensation channel (60) in the closing piston (34) when the pressure in the triggering chamber (26) is higher than the reduced pressure (P2) and to open the pressure compensation channel (60) when the pressure in the triggering chamber (26) is lower than the reduced pressure (P2). Furthermore, the pressure surface (44) of the closing piston (34) in the triggering chamber (26) is dimensioned so that the closing piston (34) is firmly pressed against the valve seat (24), when the pressure in the triggering chamber (26) equals the reduced pressure (P2).
A62C 35/68 - Details, e.g. of pipes or valve systems
F16K 17/10 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded with auxiliary valve for fluid operation of the main valve
F16K 31/383 - Operating meansReleasing devices actuated by fluid in which fluid from the conduit is constantly supplied to the fluid motor in which the fluid works directly on both sides of the fluid motor, one side being connected by means of a restricted passage and the motor being actuated by operating a discharge from that side the fluid acting on a piston
84.
DEVICE FOR THE HYDROPNEUMATIC CONTROL OF A VALVE WITH A PNEUMATIC LOCKING MEANS
The invention relates to a valve control device, the device including a hydropneumatic mechanism for amplifying the force resulting from the presence of a pressurised fluid in a control chamber consisting of a piston (4) housed in the body (2, 3) of the device. The piston (4) is rigidly connected to a piston (5) with a smaller cross-section and tightly engaging with a control member (6). The downward movement of the piston with the smaller cross-section (5) engages with a hydraulic chamber so as to increase the pressure inside said chamber and to move the control member (6) in the opposite direction. A connection port (19) for supplying the pressurised fluid is provided on a rotatably mobile element (13) on top of the device. Said port (19) is off-centre relative to the longitudinal axis, so as to be aligned with an opening (17) for supplying the control chamber. A seal is provided between the two surfaces comprising the port (19) and the opening (17) so as to seal the fluid stream when both elements are aligned. The mobile element (13) is rotatably attached to the ring (12) for activating the mechanical locking means (10) of the control member (6). In this way, a single operation of the ring (12) makes it possible to deactivate the mechanical locking means and to supply the control chamber with pressurised fluid.
The invention relates to a device for regulating a pressurised gas, said device including: a stopper (4) engaging with a seat (5) and capable of closing a pressurised gas passage; a so-called low-pressure chamber (29) downstream from the seat (5), the low-pressure chamber including a plate (27) to which the stopper (4) is coupled, and the plate being subjected to the force of a spring (30) housed in said chamber (29) and arranged concentrically relative to the seat (5) and the fastening means (28) thereof. The chamber (29) is defined by a diaphragm (26) in free contact with the plate (27). The opposite surface of the diaphragm (26) is subjected to the force of a spring (20) having a prestress which is adjustable via control means (13, 14). The control means are indexed according to two positions: a first prestress release position for ensuring the closure of the device at the stopper (4), and a second calibrated prestress position of the diaphragm (26) corresponding to the regulator operational position. A sealed chamber (24) defined by the surface of the membrane (26) opposite the low-pressure chamber (29) is formed by the prestress control means for ensuring the connection to a detector for detecting the presence of a leak or of the used gas in order to detect a potential leak at the diaphragm.
G05D 16/06 - Control of fluid pressure without auxiliary power the sensing element being a flexible member yielding to pressure, e.g. diaphragm, bellows, capsule
The invention relates to a device for indexing a rotary control member for a pressurised gas valve including a flow rate selector with a disc having calibrated openings. In order to avoid a zero service flow-rate due to an unfortunate positioning of the control member between two positions, an indexing device with mistake-proofing is provided. The device includes one or more indexing means of the “spring-and-ball” type bearing against a track that comprises recesses defining an arc of circle. The mistake-proofing is similar to the indexing means, with the difference that said mistake-proofing is offset so that the ball thereof is only partially inserted into a recess when the indexing means is/are bearing against the track between two recesses, i.e. between two indexed positions. The force component resulting from the action of the spring onto the ball, which is itself bearing on the slope of a recess, rotates the control member up to an indexed position, i.e. a position in which the indexing means is/are inserted into the bottom of the recess(es) of the track.
An integrated pressure reducing valve assembly, namely for a pressurized gas container, comprises in a common body (12): a high pressure gas inlet port, a high-pressure circuit portion, a shut-off valve, a pressure regulator (16), a low-pressure circuit portion and a low-pressure gas outlet port. A high-pressure gauge (20) is in communication with the high-pressure circuit portion and a low-pressure gauge (54) is in communication with the low-pressure circuit portion. The low-pressure gauge (54) is mounted onto a removable connector unit (56) for removably connecting a consumer equipment to the low pressure gas outlet port.
The invention relates to a valve device of the cylinder valve type, comprising a filling coupling (11) connected directly to the inlet (2) of the valve without passing via the valve shut-off device (4, 8). A filtering element (12) is positioned in a chamber at the intersection between the inlet to the valve and the device for shutting-off the valve. This allows the filter to be arranged optimally from the accessibility point of view and also from the gas flow point of view. Specifically, the filter is arranged in the chamber in such a way as to filter the stream of gas flowing towards the outlet (3) of the valve via the shut-off device, thus protecting the latter, and also in such a way as not to filter the stream of filling gas flowing from the filling connector of the valve towards the inlet.
F16K 1/30 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces specially adapted for pressure containers
89.
DEVICE FOR THE ENRICHMENT OF A LIQUID STREAM WITH A GAS
The invention relates to a device for the enrichment of a liquid stream with a gas, comprising a flow mixer (14) with a venture nozzle (36), having a rotationally symmetrical contraction (40) with a diameter D and being flown through axially by the liquid stream. The invention further comprises a gas feed for the lateral feed of the gas into the contraction (40) of the venture nozzle (36). The gas feed comprises at least one gas channel (54, 54') with a diameter dឬ0,5*D, ending laterally in the contraction (40) of the venture nozzle (36) in a way, such that the elongated longitudinal axis (56, 56') thereof is tangential to an imaginary cylinder surface (58), which is coaxial to the contraction (40) and comprises a diameter D'ᡶd.
The invention relates to a gas regulating and/or controlling device comprising: a body (1) with a gas passageway, inlet (2) and outlet (3), the inlet and outlet being connected to the passageway; passageway closure means (5, 6, 7, 8); and movable means (9) defining with the body (1) of the device a low-pressure chamber (11) downstream of the closure means (5, 6, 7, 8), the movable means (9) operating the closure means (5, 6, 7, 8) as a function of the pressure in the low-pressure chamber (11). The closure means (5, 6, 7, 8) comprise a first closure member (5, 6) and a second closure member (7, 8), the latter downstream of the former inside the passageway, and the first and second closure members (5, 6, 7, 8) are mechanically connected so that the first closure member (5, 6) closes before the second (7, 8).
F16K 31/145 - Operating meansReleasing devices actuated by fluid for mounting on, or in combination with, hand-actuated valves the fluid acting on a diaphragm
F16K 1/44 - Details of seats or valve members of double-seat valves
A poly valve device for a gas tank comprising a valve body (1 ) with a flange (2) for mounting the device on the gas tank; an overfill protection valve (3) mounted on an internal side of the valve body (1) with regard to the tank when the device is mounted thereon; a fill port (4) on an external side of the valve body (1 ) and in communication with the overfill protection valve (3); a level indicator means (6,7) on the internal side of the valve body (1); means (8,9) for transmitting information of the level of liquid in the tank from the level indicator means (6) to the external side of the valve body (1); a valve means mounted on the valve body for delivering gas from the tank to a user; wherein the poly valve device further comprises a level sensing means (5) with a floater (10) hinged on the overfill protection valve (3) and/or on the level indicator means (6) and cooperating with both of them for providing information of the level of liquid.
A high pressure diaphragm gas valve comprises a removable seat assembly (32), including a mounting ring (34) and a synthetic seat ring (36), which is fitted in a central seat hole of a mounting ring (34). A nozzle (60) penetrates in a sealed way into a central through hole (38) of the synthetic seat ring (36). A first gas port (28) is arranged in a front face (62) of the nozzle (60). A second gas port is formed by a gas collecting ring channel (30) incorporated into the valve body (12), wherein it surrounds a nozzle shoulder surface (64) of the nozzle (60) and is itself surrounded by an outer shoulder surface (102) of the valve body (12). The mounting ring (34) is supported with an inner ring flange (82) on the nozzle shoulder surface (64) and with an outer ring flange (84) on the outer shoulder surface (102), so that peripheral gas passages (86) open into the ring channel (30).
F16K 7/17 - Diaphragm cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage with flat, dished, or bowl-shaped diaphragm arranged to be deformed against a flat seat the diaphragm being actuated by fluid pressure
93.
GAS PRESSURE REGULATOR HAVING A SWITCHING SHAFT WITH AN INTEGRATED PRESSURE GAUGE
A gas pressure regulator incorporating a switching shaft (26) for controlling admission of high pressure gas into the pressure regulator. A high pressure gauge (38) is integrated in the switching shaft (26). The pressure gauge (38) has a scale (S) graduated to represent a remaining gas reserve in a gas container on which the regulator is mounted.
G05D 16/06 - Control of fluid pressure without auxiliary power the sensing element being a flexible member yielding to pressure, e.g. diaphragm, bellows, capsule
94.
SINGLE-PIECE GAS FITTING WITH BUILT-IN PRESSURE GAUGE
A single-piece gas fitting with a built-in pressure gauge comprises a body (12) with at least one gas union (36, 38) and a housing for a pressure gauge (56) in the front surface (14). A pressure gauge (32) has a casing (50) with a rear union. The casing (50) is housed in the pressure gauge housing (32). The union end-piece (52) enters the body (12) hermetically. This body has a rear bore (60) with a rear mouth in the rear surface (16) of the body (12). The union end-piece (52) penetrates the rear bore (60) hermetically in the axial direction. A plug (80) is screwed through the rear mouth onto the union end-piece (52). This plug (80) closes off the rear bore (60) hermetically at its rear mouth end and bears against a first bearing surface (92) belonging to the body (12) in order to pull said pressure gauge (32) against a second bearing surface (59) belonging to the body (12), thus securing the pressure gauge (32) in the body (12). A highly compact point of use is also discussed.
The present invention is directed to a gas valve assembly with an integrated pressure reducer, optionally also with a flow selector and/or with an integrated pressure relief valve and/or a residual pressure valve. The pressure reducer 8, and optionally the pressure relief valve 21 and/or the residual pressure valve 22, is (are) integrated in a sub assembly 5 which is slidingly engaged in a longitudinal cavity 2 in the valve body 1. This sub assembly 5 has an inlet 6 and an outlet 7. A shut-off valve is fluidly interposed between the gas valve inlet 4 and the sub assembly inlet 6. Operating means are foreseen to longitudinally move the sub assembly 5 within the cavity 2 for actuating the gas shut-off valve 10. Means 15 are provided for separating the cavity 2 in a first chamber 16 and an adjacent second chamber 17 isolated from the first chamber 16 in a sealed way and such that the sub assembly outlet 7 flows in the second chamber 17. The valve outlet 9 is provided on the valve body 1 in communication with the second chamber 17.
F16K 1/30 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces specially adapted for pressure containers
A valve for pressurized or liquefied gas comprises a valve body (12) with a gas flow channel (16) and in this channel a sealing seat (30) for an open/close element (32) having a free end (60) where a shoulder (62) is provided. An annular seal (64) is mounted on the free end (60) of the open/close element (32), the annular seal (64) having a front end face (66) facing the sealing seat (30) and a rear end face (68) resting on the shoulder (62) of the open/close body. A holding ring (70) surrounds the annular seal (64) circumferentially and comprises a radial lip (72) that bears on the outer edge of the front end face (66) of said annular seal (64). The annular seal (64) includes an outer annular shoulder (74) on the edge of its front end face and the radial lip (72) with the holding ring (70) has an annular bead (76) facing this outer annular shoulder (74) of the annular seal (64). The holding ring (70) is fixed to the open/close element (32) by a leaktight outer circumferential weld (77), so that the annular bead (76) passes axially into the outer annular shoulder (74) of the annular seal (64) to compress it.
F16K 1/02 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle
The invention relates to a device for adjusting the pressure and/or flow rate of a pressurized gas. The device comprises a body (1) having essentially formed therein a machined high-pressure chamber (2) towards which the pressurized gas is supplied as well as a low-pressure chamber (15) connected to the outlet of the device. The pressurized gas is supplied into the high-pressure chamber (2) through the periphery thereof. A seat (3) in the shape of a pellet is provided at the bottom of the high-pressure chamber and co-operates with the end of a hollow rod (8) capable of sliding within the high-pressure chamber (2). Preferably, a cylindrical porous member is provided in the high-pressure chamber and surrounds the hollow rod (8). The gas is thus diffused and filtered before being accelerated in the reduced-passage section defined by the gap between the end of the hollow rod and the pellet (3). The gas is then expanded in the hollow rod (8) and supplied into the low-pressure chamber (15) in which a piston or a membrane (10) is capable of displacement for adjusting the position of the hollow rod (8).
Valve for pressurized or liquefied gas cylinder comprising a valve body (12) with a gas flow passage (16) running between an inlet opening (18) and an outlet opening (20); and a sealing seat (30) inside the passage (16) of the valve body with which a plugging member (34) is associated. A control head (14, 114) is mounted removably on the valve body (12) and includes an axial control rod (60, 118) cooperating with the plugging member (34) in order to move it between a closed position in which it rests on the sealing seat (30), in order to block the flow into the passage (16), and an open position in which the plugging member (34) is separated from the sealing seat (30), in order to enable the outflow. A locking means (82) is integrated with the valve body (12) and enables the plugging member (34) to be locked onto the sealing seat (30) when the control head (14, 114) is separated from the valve body (12).
F16K 1/30 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces specially adapted for pressure containers
A gas tank containing a compressed combustible gas is equipped with a safety relief system (18) providing an emergency discharge of the compressed combustible gas through a relief line (21). The safety relief system (18) comprises a pressurized triggering hose (24) that extends through a selected risk area around the tank, wherein a rupture of the triggering hose, due to a temperature increase or mechanical damage, results in a pressure drop in the safety relief system (18) that triggers an emergency discharge of said pressurized combustible gas from said gas tank (10).
A sealed flange joint for high pressure and/or high purity fluid channels com- prises a first flange (10) with a first fluid channel (12) and a cylindrical front cavity (14). The front cavity (14) is axially delimited by a ground surface (18) and radially by a peripheral surface (20). The first fluid channel (12) passes axially through the first flange (10) to open into the ground surface (18). A polymer seal ring (30) has a radial outer surface (32) and a radial inner surface (34), and is fitted into the cylindrical front cavity (14) so that its radial outer surface (32) engages the peripheral surface (20) of the front cavity. A second flange (16) is removably fixed onto the first flange (10), and has a second fluid channel (22) in axial continuation of the first fluid channel (12). The second flange (16) has an axially protruding cylindrical front nipple (24) with a conical head (26), the second fluid channel (22) axially opening into an end surface (28) of the conical head (26). The conical head (26) engages the radial inner surface (34) of the seal ring (30) to radially press the latter with its radial outer surface (32) against the peripheral surface (20) of the front cavity (14).
patents
