Abstract

A hydraulic cartridge valve includes a movable member and a position monitoring mechanism configured to detect the position of the movable member. The position monitoring mechanism is adapted to generate a position signal indicative of the position of the movable member. The position monitoring mechanism can be in the form of a linear variable differential transformer (LVDT).

IPC Classes  ?

• F15B 15/28 - Means for indicating the position, e.g. end of stroke
• F16K 3/00 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
• F16K 31/06 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a magnet
• 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

Abstract

A hydraulic control assembly includes means for holding pressure in a cylinder to inhibit boom or arm drop of a machine in the event that a hose between the cylinder and a main control valve (MCV) ruptures. The pressure holding means of the hydraulic control assembly include a hydraulic valve and a parts-in-body check assembly both configured for insertion into a valve cavity defined by a valve body. The hydraulic valve comprises a proportional piloted valve that controls pressure.

IPC Classes  ?

• F16K 17/04 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded
• F15B 13/04 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
• F15B 13/043 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with electrically-controlled pilot valves
• E02F 9/22 - Hydraulic or pneumatic drives

Abstract

A hydraulic control valve can be one type of a variable characteristic (e.g., coil voltage). A visual identification system is provided to permit the visual identification of the specific type of the variable characteristic that the control valve is to assist in the assembly of systems utilizing such control valves. The visual identification system includes first and second indicator bearing first and second indicia, respectively, configured to indicate a first value and a different second value of a variable characteristic, respectively. The first and second indicator members are configured to be separately removably mounted to the control valve via a mechanical connection substantially without adhesive such that the appropriate indicator member can be selected and mounted to the valve depending upon what type of valve it is.

IPC Classes  ?

• F15B 21/00 - Common features of fluid actuator systemsFluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
• F15B 13/00 - Details of servomotor systems
• F16K 11/076 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only sliding valves with pivoted closure members with sealing faces shaped as surfaces of solids of revolution
• F16K 51/00 - Other details not peculiar to particular types of valves or cut-off apparatus
• G05D 1/43 - Control of position or course in two dimensions

Abstract

A hydraulic valve comprises a proportional piloted valve that controls pressure and includes means for restricting pilot flow through the pilot flow passage. The means for restricting pilot flow defines a restriction in the pilot flow passage when a movable spool disposed in an axial bore of the body of the valve is in a neutral position. The restriction varies as a function of spool movement such that flow of hydraulic fluid through the pilot flow passage is variably restricted as a function of the position of the spool over its range of travel.

IPC Classes  ?

• F15B 13/04 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
• F16K 11/07 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only sliding valves with linearly sliding closure members with cylindrical slides

Abstract

A hydraulic valve comprises a proportional piloted valve that controls pressure and includes means for restricting pilot flow through the pilot flow passage. The means for restricting pilot flow defines a restriction in the pilot flow passage when a movable spool disposed in an axial bore of the body of the valve is in a neutral position. The restriction varies as a function of spool movement such that flow of hydraulic fluid through the pilot flow passage is variably restricted as a function of the position of the spool over its range of travel.

IPC Classes  ?

• G05D 16/20 - Control of fluid pressure characterised by the use of electric means

Abstract

A balancing valve includes four ports. While the pressures at a pair of balancing ports of a hydraulic balancing valve are equal, the valve maintains two other ports in a closed position. Upon a pressure differential between the balancing ports, fluid communication can occur between one of the balancing ports and either of the other ports based upon the direction of the pressure differential. A hydraulic ride control system utilizes the balancing valve together with other control valves to provide ride control functionality.

IPC Classes  ?

• F16K 11/07 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only sliding valves with linearly sliding closure members with cylindrical slides
• E02F 9/22 - Hydraulic or pneumatic drives
• F15B 1/027 - Installations or systems with accumulators having accumulator charging devices
• F15B 13/02 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors

Goods & Services

hydraulic control valves in cartridge form, hydraulic control valves having electronic proportional controls, and hydraulic control systems comprised of electronically-controlled hydraulic cartridge valves, all of the foregoing for installation in land vehicles, namely, tractors, agricultural vehicles, lift trucks, bulldozers, and construction vehicles

Abstract

A hydraulic control assembly includes means for holding pressure in a cylinder to inhibit boom or arm drop of a machine in the event that a hose between the cylinder and a main control valve (MCV) ruptures. The pressure holding means of the hydraulic control assembly include a hydraulic valve and a parts-in-body check assembly both configured for insertion into a valve cavity defined by a valve body. The hydraulic valve comprises a proportional piloted valve that controls pressure.

IPC Classes  ?

• F15B 11/00 - Servomotor systems without provision for follow-up action
• F15B 13/02 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
• F15B 13/01 - Locking-valves or other detent devices
• F15B 13/043 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with electrically-controlled pilot valves
• F15B 20/00 - Safety arrangements for fluid actuator systemsApplications of safety devices in fluid actuator systemsEmergency measures for fluid actuator systems
• F15B 13/00 - Details of servomotor systems
• F16K 31/00 - Operating meansReleasing devices

Abstract

A hydraulic cartridge valve includes a movable member and a position monitoring mechanism configured to detect the position of the movable member. The position monitoring mechanism is adapted to generate a position signal indicative of the position of the movable member. The position monitoring mechanism can be in the form of a linear variable differential transformer (LVDT).

IPC Classes  ?

• F15B 15/28 - Means for indicating the position, e.g. end of stroke
• F16K 3/00 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
• F16K 31/06 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a magnet
• 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

Abstract

A hydraulic control assembly includes means for holding pressure in a cylinder to inhibit boom or arm drop of a machine in the event that a hose between the cylinder and a main control valve (MCV) ruptures. The pressure holding means of the hydraulic control assembly include a hydraulic valve and a parts-in-body check assembly both configured for insertion into a valve cavity defined by a valve body. The hydraulic valve comprises a proportional piloted valve that controls pressure.

IPC Classes  ?

• F15B 13/04 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
• F15B 13/043 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with electrically-controlled pilot valves
• F16K 17/04 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded
• E02F 9/22 - Hydraulic or pneumatic drives

Abstract

A hydraulic cartridge valve (12) includes a movable member (20) and a position monitoring mechanism (25) configured to detect the position of the movable member. The position monitoring mechanism is adapted to generate a position signal indicative of the position of the movable member. The position monitoring mechanism can be in the form of a linear variable differential transformer (LVDT).

IPC Classes  ?

• 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 31/06 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a magnet
• F16K 3/00 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
• G01D 5/22 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature differentially influencing two coils
• F16K 3/26 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member
• F16K 11/07 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only sliding valves with linearly sliding closure members with cylindrical slides

Abstract

A hydraulic actuator system includes a load sense assembly that is configured to transmit a load sense signal to a variable pump to vary a flow of pressurized fluid from the variable pump in response to the load sense signal to generate a desired flow to the actuator. The load sense assembly includes a load sense boost valve (LSBV) configured to dynamically boost the load-sense signal according to the desired margin pressure and the flow demand from the system. When flow demands are low, margin pressure will be above the set threshold of the adjustable LSBV, and no boosting occurs. When flow demands are high and pressure in the load sense line drops to the set threshold, or minimum margin pressure, the LSBV begins boosting the load sense signal pressure dynamically. The boosted load sense signal signals the variable pump to stroke and displace more fluid to increase flow to the actuator.

IPC Classes  ?

• F15B 11/05 - Systems essentially incorporating special features for controlling the speed or the actuating force or speed of an output member for controlling the speed specially adapted to maintain constant speed, e.g. pressure-compensated, load-responsive
• F15B 11/16 - Servomotor systems without provision for follow-up action with two or more servomotors
• F15B 13/04 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
• F15B 11/042 - Systems essentially incorporating special features for controlling the speed or the actuating force or speed of an output member for controlling the speed by means in the feed line

Abstract

A hydraulic control valve can be one type of a variable characteristic (e.g., coil voltage). A visual identification system is provided to permit the visual identification of the specific type of the variable characteristic that the control valve is to assist in the assembly of systems utilizing such control valves. The visual identification system includes first and second indicator bearing first and second indicia, respectively, configured to indicate a first value and a different second value of a variable characteristic, respectively. The first and second indicator members are configured to be separately removably mounted to the control valve via a mechanical connection substantially without adhesive such that the appropriate indicator member can be selected and mounted to the valve depending upon what type of valve it is.

IPC Classes  ?

• F15B 13/08 - Assemblies of units, each for the control of a single servomotor only
• F16K 27/00 - Construction of housingsUse of materials therefor
• F16K 27/04 - Construction of housingsUse of materials therefor of sliding valves
• F16K 31/06 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a magnet
• 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

Abstract

A hydraulic control valve can be one type of a variable characteristic (e.g., coil voltage). A visual identification system is provided to permit the visual identification of the specific type of the variable characteristic that the control valve is to assist in the assembly of systems utilizing such control valves. The visual identification system includes first and second indicator bearing first and second indicia, respectively, configured to indicate a first value and a different second value of a variable characteristic, respectively. The first and second indicator members are configured to be separately removably mounted to the control valve via a mechanical connection substantially without adhesive such that the appropriate indicator member can be selected and mounted to the valve depending upon what type of valve it is.

IPC Classes  ?

• F16K 51/00 - Other details not peculiar to particular types of valves or cut-off apparatus
• F15B 21/00 - Common features of fluid actuator systemsFluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
• F16K 11/076 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only sliding valves with pivoted closure members with sealing faces shaped as surfaces of solids of revolution
• F15B 13/00 - Details of servomotor systems
• G05D 1/00 - Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots

Abstract

A balancing valve includes four ports. While the pressures at a pair of balancing ports of a hydraulic balancing valve are equal, the valve maintains two other ports in a closed position. Upon a pressure differential between the balancing ports, fluid communication can occur between one of the balancing ports and either of the other ports based upon the direction of the pressure differential. A hydraulic ride control system utilizes the balancing valve together with other control valves to provide ride control functionality.

IPC Classes  ?

• F16K 11/07 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only sliding valves with linearly sliding closure members with cylindrical slides
• F15B 1/027 - Installations or systems with accumulators having accumulator charging devices
• F15B 13/02 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
• E02F 9/22 - Hydraulic or pneumatic drives

Goods & Services

Hydraulic boom control solutions comprised of hydraulic components, namely, hydraulic cartridge valves, hydraulic manifolds and electro-hydraulic controls for use in machines

Goods & Services

Hydraulic boom control solutions comprised of hydraulic components, namely, hydraulic cartridge valves, hydraulic manifolds and electro-hydraulic controls for use in machines

Abstract

A hydraulic motor drive system controls the pressure of the hydraulic fluid delivered to a motor by a variable pressure source to control the rotation of a high inertial load rotary member driven by the motor. The speed of the motor and/or rotary component is monitored and changes in the speed are controlled by changing the pressure of the hydraulic fluid delivered to the motor.

IPC Classes  ?

• F16H 61/47 - Automatic regulation in accordance with output requirements for achieving a target output speed
• F16H 61/4008 - Control of circuit pressure
• F16H 61/4183 - Preventing or reducing vibrations or noise, e.g. avoiding cavitations
• A01D 69/03 - Driving mechanisms or parts thereof for harvesters or mowers fluid
• F16H 61/431 - Pump capacity control by electro-hydraulic control means, e.g. using solenoid valve
• A01D 57/02 - Devices for leading crops to the mowing apparatus using reels
• F16H 61/4061 - Control related to directional control valves, e.g. change-over valves, for crossing the feeding conduits

Abstract

A hydraulic control valve maintains the pressure at a control port at a desired percentage of the pressure at two other ports as the pressure at the two other ports varies. Upon the pressure at the control port reaching a predetermined pressure setting, a fourth port will open to maintain the control port at a second desired percentage of the two other ports.

IPC Classes  ?

• F16H 61/40 - Control of exclusively fluid gearing hydrostatic
• F15B 11/04 - Systems essentially incorporating special features for controlling the speed or the actuating force or speed of an output member for controlling the speed
• F15B 11/05 - Systems essentially incorporating special features for controlling the speed or the actuating force or speed of an output member for controlling the speed specially adapted to maintain constant speed, e.g. pressure-compensated, load-responsive
• F15B 13/00 - Details of servomotor systems
• F16K 11/00 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid
• F16K 11/06 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only sliding valves

Abstract

A hydraulic control valve maintains the pressure at a control port at a desired percentage of the pressure at two other ports as the pressure at the two other ports varies. Upon the pressure at the control port reaching a predetermined pressure setting, a fourth port will open to maintain the control port at a second desired percentage of the two other ports.

IPC Classes  ?

• F15B 13/07 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors in distinct sequence
• F16H 61/4043 - Control of a bypass valve
• F16H 61/456 - Control of the balance of torque or speed between pumps or motors
• F16H 61/4008 - Control of circuit pressure
• F15B 11/16 - Servomotor systems without provision for follow-up action with two or more servomotors
• F15B 13/02 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
• F16K 11/07 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only sliding valves with linearly sliding closure members with cylindrical slides
• F16K 17/04 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded

Abstract

A hydraulic actuator control system performs pressure compensation in the system by monitoring the pressure differential across a meter-out device. A flow of fluid can be directed from a pump through a meter-in device to a chamber of an actuator via a first port. In response to the flow of fluid entering the first port of the actuator, a return flow of fluid can be directed from a second port of the actuator through the meter-out device to a tank. The meter-in device can monitor a pressure differential across the meter-out device. The meter-in device can control the flow of the fluid from the pump to the actuator to place the pressure differential across the meter-out device within a desired range.

IPC Classes  ?

• F15B 13/04 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor

Goods & Services

Machine parts, namely hydraulic cartridge valves for use in mobile and industrial equipment, hydraulic manifolds, electro-hydraulic controls, and hydraulic components customized to the specification of machinery equipment manufacturers for use in off-road equipment and machinery, namely, heavy equipment; Hydraulic machinery, namely aerial lift equipment, agricultural equipment and construction equipment

Goods & Services

Machine parts, namely hydraulic cartridge valves for use in mobile and industrial equipment.

Goods & Services

Machine parts, namely hydraulic cartridge valves for use in mobile and industrial equipment.

Goods & Services

(1) Machine parts, namely hydraulic cartridge valves for use in mobile and industrial equipment.

Goods & Services

(1) Machine parts, namely hydraulic cartridge valves for use in mobile and industrial equipment.

Abstract

A hydraulic suspension system includes a suspension cylinder, a pump, and a control valve therebetween. The control valve includes a spool reciprocally movable between a pump flow position and a tank flow position in which a control port of the control valve is in communication with a pump and a tank, respectively. A piloted logic element in fluid communication with and interposed between the control valve and the suspension cylinder is selectively movable between a through-flow position in which fluid can flow in either direction between a chamber of the suspension cylinder and the control port of the control valve and a blocked position in which fluid is prevented from flowing in or out of the chamber of the suspension cylinder. The logic element is biased to the blocking position, moving to the through-flow position when subjected to a crack pressure delivered from the control port of the control valve.

IPC Classes  ?

• F16K 11/078 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only sliding valves with pivoted and linearly movable closure members
• F15B 1/04 - Accumulators
• F04B 53/10 - ValvesArrangement of valves
• F16K 31/06 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a magnet
• B60G 17/056 - Regulating distributors or valves

Abstract

A hydraulic suspension system includes a suspension cylinder, a pump, and a control valve therebetween. The control valve includes a spool reciprocally movable between a pump flow position and a tank flow position in which a control port of the control valve is in communication with a pump and a tank, respectively. A piloted logic element in fluid communication with and interposed between the control valve and the suspension cylinder is selectively movable between a through-flow position in which fluid can flow in either direction between a chamber of the suspension cylinder and the control port of the control valve and a blocked position in which fluid is prevented from flowing in or out of the chamber of the suspension cylinder. The logic element is biased to the blocking position, moving to the through-flow position when subjected to a crack pressure delivered from the control port of the control valve.

IPC Classes  ?

• F16D 31/02 - Fluid couplings or clutches with pumping sets of the volumetric type, i.e. in the case of liquid passing a predetermined volume per revolution using pumps with pistons or plungers working in cylinders
• F15B 1/04 - Accumulators
• F15B 11/00 - Servomotor systems without provision for follow-up action
• F15B 11/16 - Servomotor systems without provision for follow-up action with two or more servomotors
• F15B 1/02 - Installations or systems with accumulators
• F15B 11/10 - Servomotor systems without provision for follow-up action with only one servomotor in which the servomotor position is a function of the pressure
• F15B 9/09 - Servomotors with follow-up action, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type controlled by valves affecting the fluid feed or the fluid outlet of the servomotor with electrical control means
• F04B 53/10 - ValvesArrangement of valves
• F16K 31/06 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a magnet
• B60G 17/056 - Regulating distributors or valves

Goods & Services

Computer software and hardware for hydraulic systems; programmable electronic controllers of industrial operations; electric installations for the remote control of industrial operations.

Goods & Services

Computer software and hardware for hydraulic systems; programmable electronic controllers of industrial operations; electric installations for remote control of industrial operations.

Goods & Services

(1) Computer software and hardware for control of hydraulic systems for mobile off-highway equipment; programmable electronic controllers for mobile off-highway equipment used in industrial operations; electric installations for remote control of mobile off-highway equipment used in industrial operations.

Goods & Services

(1) Computer software and hardware for control of hydraulic systems for mobile off-highway equipment; programmable electronic controllers for mobile off-highway equipment used in industrial operations; electric installations for remote control of mobile off-highway equipment used in industrial operations.

Goods & Services

Computer software and hardware for control of hydraulic systems; programmable electronic controllers of industrial operations; electric installations for remote control of industrial operations

Goods & Services

Computer software and hardware for control of hydraulic systems; programmable electronic controllers of industrial operations; electric installations for remote control of industrial operations

Abstract

A proportional motion control valve includes an electro-mechanical actuator that provides an infinitely controlled pressure setting in response to an electric signal applied to the electro-mechanical actuator. In another aspect, a proportional motion control valve includes a pilot-operated valve disposed intermediately with respect to a cage and a valve body to fluidly isolate an internal cavity of the valve body from a bore of the cage. The pilot-operated valve is subjected to a hydraulic opening force of pilot fluid that is present in the bore of the cage and to a hydraulic closing force by fluid that is present in the internal cavity. A spring is disposed within the internal cavity of the valve body and arranged to subject the pilot-operated valve to a closing spring force.

IPC Classes  ?

• F16K 31/06 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a magnet

Goods & Services

machine parts, namely hydraulic cartridge valves for use in mobile and industrial equipment

Goods & Services

machine parts, namely hydraulic cartridge valves for use in mobile and industrial equipment