A rod for a piston and cylinder device has a rod spud having a spiral channel in an outer surface thereof. The spiral channel spirals around the rod spud in a longitudinal direction. The spiral channel provides a hydraulic fluid flow path between an internal volume of a barrel and an internal volume of a spud receiver of the piston and cylinder device when the rod spud is in the spud receiver. At least a portion of the spiral channel has a cross-sectional area that decreases continuously and gradually as the spiral channel spirals longitudinally away from a distal end of the rod spud. The spiral channel provides more controlled deceleration of the hydraulic cylinder rod until the end of the retraction stroke.
F15B 15/22 - Autres parties constitutives pour accélérer ou ralentir le mouvement
F15B 15/14 - Dispositifs actionnés par fluides pour déplacer un organe d'une position à une autreTransmission associée à ces dispositifs caractérisés par la structure de l'ensemble moteur le moteur étant du type à cylindre droit
A sensing system for determining axial position of a cylindrical rod involves: a tapered rotatable shaft having a rotation axis, the shaft positionable so that the rotation axis is perpendicular to a translation axis of a cylindrical rod, the shaft having a tapered portion that is frictionally engageable with the cylindrical rod to be rotatable by the cylindrical rod when the cylindrical rod moves axially: a biasing element that biases the shaft in a direction parallel to the rotation axis of the shaft to continually maintain frictional engagement of the tapered portion of the shaft with the cylindrical rod when the shaft is engaged with the cylindrical rod: and, a sensor for detecting rotation of the shaft when the shaft is rotated by the cylindrical rod, the rotation of the shaft being correlated to the axial position of the cylindrical rod.
G01D 5/14 - Moyens mécaniques pour le transfert de la grandeur de sortie d'un organe sensibleMoyens pour convertir la grandeur de sortie d'un organe sensible en une autre variable, lorsque la forme ou la nature de l'organe sensible n'imposent pas un moyen de conversion déterminéTransducteurs non spécialement adaptés à une variable particulière utilisant des moyens électriques ou magnétiques influençant la valeur d'un courant ou d'une tension
A rod for a piston and cylinder device has a rod spud having a spiral channel in an outer surface thereof. The spiral channel spirals around the rod spud in a longitudinal direction. The spiral channel provides a hydraulic fluid flow path between an internal volume of a barrel and an internal volume of a spud receiver of the piston and cylinder device when the rod spud is in the spud receiver. At least a portion of the spiral channel has a cross-sectional area that decreases continuously and gradually as the spiral channel spirals longitudinally away from a distal end of the rod spud. The spiral channel provides more controlled deceleration of the hydraulic cylinder rod until the end of the retraction stroke.
A sensing system for determining axial position of a cylindrical rod involves: a tapered rotatable shaft having a rotation axis, the shaft positionable so that the rotation axis is perpendicular to a translation axis of a cylindrical rod, the shaft having a tapered portion that is frictionally engageable with the cylindrical rod to be rotatable by the cylindrical rod when the cylindrical rod moves axially; a biasing element that biases the shaft in a direction parallel to the rotation axis of the shaft to continually maintain frictional engagement of the tapered portion of the shaft with the cylindrical rod when the shaft is engaged with the cylindrical rod; and, a sensor for detecting rotation of the shaft when the shaft is rotated by the cylindrical rod, the rotation of the shaft being correlated to the axial position of the cylindrical rod.
G01D 5/04 - Moyens mécaniques pour le transfert de la grandeur de sortie d'un organe sensibleMoyens pour convertir la grandeur de sortie d'un organe sensible en une autre variable, lorsque la forme ou la nature de l'organe sensible n'imposent pas un moyen de conversion déterminéTransducteurs non spécialement adaptés à une variable particulière utilisant des moyens mécaniques utilisant des leviersMoyens mécaniques pour le transfert de la grandeur de sortie d'un organe sensibleMoyens pour convertir la grandeur de sortie d'un organe sensible en une autre variable, lorsque la forme ou la nature de l'organe sensible n'imposent pas un moyen de conversion déterminéTransducteurs non spécialement adaptés à une variable particulière utilisant des moyens mécaniques utilisant des camesMoyens mécaniques pour le transfert de la grandeur de sortie d'un organe sensibleMoyens pour convertir la grandeur de sortie d'un organe sensible en une autre variable, lorsque la forme ou la nature de l'organe sensible n'imposent pas un moyen de conversion déterminéTransducteurs non spécialement adaptés à une variable particulière utilisant des moyens mécaniques utilisant des engrenages
In a piston and cylinder device, such as a hydraulic cylinder, potential or kinetic energy of the piston just before reaching the cylinder head at the end of a stroke can be mitigated using a rod spud/cushion sleeve arrangement where the rod spud and cushion sleeve comprise complementary continuously and gradually tapered portions forming an annular orifice having a cross-sectional area that dynamically, continuously and gradually decreases as an external tapered portion of the rod spud moves through an internal tapered portion of the cushion sleeve to the end of the piston stroke.
In a piston and cylinder device, such as a hydraulic cylinder, potential or kinetic energy of the piston just before reaching the cylinder head at the end of a stroke can be mitigated using a rod spud/cushion sleeve arrangement where the rod spud and cushion sleeve comprise complementary continuously and gradually tapered portions forming an annular orifice having a cross-sectional area that dynamically, continuously and gradually decreases as an external tapered portion of the rod spud moves through an internal tapered portion of the cushion sleeve to the end of the piston stroke.
F16F 9/58 - Butées pour limiter la course, p. ex. disposées sur la tige de piston à l'extérieur du cylindre
F16F 9/18 - Dispositifs à un ou plusieurs organes, p. ex. des pistons, des aubes, se déplaçant en va-et-vient dans des chambres et utilisant un effet d'étranglement comportant uniquement un déplacement rectiligne des parties travaillant avec un cylindre fermé et un piston déterminant, à l’intérieur de ce cylindre, plusieurs espaces de travail
F16F 9/49 - Tampons arrêtoirs limitant le passage du fluide, p. ex. tampons hydrauliques
A hydraulic rotary manifold has a core manifold having a barrel and a rotatable spindle inserted in the barrel. The core manifold is common to a variety of different configurations involving removable spindle-mounted and barrel-mounted manifolds, which may be removably mounted on the core manifold and exchanged for other removable manifolds to provide different hydraulic fluid flow paths in the rotary manifold using the common core manifold. The rotary manifold permits retrofitting a secondary fluid flow path to use a secondary fluid in conjunction with a work tool mounted on the rotary manifold. The rotary manifold permits mounting a rotary position encoder on a barrel-side of the rotary manifold permitting the use of the common core manifold when a rotary position encoder is desired. Electronically actuated cartridge valves may be integrated into the core manifold and/or removable manifolds to provide further customization of the hydraulic fluid flow paths in the rotary manifold and/or to provide cross-over relief paths within the rotary manifold itself.
F16L 27/00 - Raccords réglablesRaccords permettant un déplacement des parties raccordées
F15B 13/02 - Dispositifs de distribution ou d'alimentation du fluide caractérisés par leur adaptation à la commande de servomoteurs
F16K 31/06 - Moyens de fonctionnementDispositifs de retour à la position de repos électriquesMoyens de fonctionnementDispositifs de retour à la position de repos magnétiques utilisant un aimant
F16L 27/093 - Raccords avec passages de fluides orientés radialement du type "banjo", c.-à-d. accouplements pivotants à angle droit
hydraulic swivels, being metal hardware in the nature of double-ended swivels; hydraulic fluid seals; hydraulic fluid fittings; hydraulic swivels; hydraulic manifolds, namely, metal manifolds for use with hydraulic systems; hydraulic fluid fittings, namely, rotary metal manifolds for hydraulic components of powered equipment, such as earth moving, agricultural, forestry and utility equipment; hydraulic swivels, namely, metal hose fittings for hydraulic hose connections that permit swiveling of the hoses relative to one another about a common axis [ hydraulic pumps; hydraulic liner actuators and hydraulic valve actuators ]
A hydraulic fluid coupling for attaching two hydraulic hoses that comprises an inline swivel joint to prevent twisting of the hoses. The coupling comprises a first and second coupling portion, with the second coupling portion rotatable relative to the first coupling portion. There are two bearings and a ring shaped piston that slides toward the second bearing in response to fluid pressure inside the coupling. Engagement of the piston with the second bearing urges the second coupling portion towards the first coupling portion, against the action of fluid pressure between the first and second couplings. This reduces the load on the first bearing and transfers some of that load to the second bearing, thereby making it easier to rotate the second coupling portion.
A hydraulic fluid coupling for attaching two hydraulic hoses that comprises an inline swivel joint to prevent twisting of the hoses. The coupling comprises a first and second coupling portion, with the second coupling portion rotatable relative to the first coupling portion. There are two bearings and a ring shaped piston that slides toward the second bearing in response to fluid pressure inside the coupling. Engagement of the piston with the second bearing urges the second coupling portion towards the first coupling portion, against the action of fluid pressure between the first and second couplings. This reduces the load on the first bearing and transfers some of that load to the second bearing, thereby making it easier to rotate the second coupling portion.
F16L 27/08 - Raccords réglablesRaccords permettant un déplacement des parties raccordées permettant un réglage ou déplacement uniquement autour de l'axe de l'un des tuyaux
F16L 37/50 - Accouplements du type à action rapide réglablesAccouplements du type à action rapide permettant un déplacement des parties raccordées
F16L 37/53 - Accouplements du type à action rapide réglablesAccouplements du type à action rapide permettant un déplacement des parties raccordées autorisant un réglage ou un déplacement uniquement autour de l'axe de l'un des tuyaux
A rod for a piston and cylinder device has a rod spud having a spiral channel in an outer surface thereof. The spiral channel spirals around the rod spud in a longitudinal direction. The spiral channel provides a hydraulic fluid flow path between an internal volume of a barrel and an internal volume of a spud receiver of the piston and cylinder device when the rod spud is in the spud receiver. At least a portion of the spiral channel has a cross-sectional area that decreases continuously and gradually as the spiral channel spirals longitudinally away from a distal end of the rod spud. The spiral channel provides more controlled deceleration of the hydraulic cylinder rod until the end of the retraction stroke.
A hydraulic rotary manifold has a core manifold having a barrel and a rotatable spindle inserted in the barrel. The core manifold is common to a variety of different configurations involving removable spindle-mounted and barrel-mounted manifolds, which may be removably mounted on the core manifold and exchanged for other removable manifolds to provide different hydraulic fluid flow paths in the rotary manifold using the common core manifold. The rotary manifold permits retrofitting a secondary fluid flow path to use a secondary fluid in conjunction with a work tool mounted on the rotary manifold. The rotary manifold permits mounting a rotary position encoder on a barrel-side of the rotary manifold permitting the use of the common core manifold when a rotary position encoder is desired. Electronically actuated cartridge valves may be integrated into the core manifold and/or removable manifolds to provide further customization of the hydraulic fluid flow paths in the rotary manifold and/or to provide cross-over relief paths within the rotary manifold itself.
In a piston and cylinder device, such as a hydraulic cylinder, potential or kinetic energy of the piston just before reaching the cylinder head at the end of a stroke can be mitigated using a rod spud/cushion sleeve arrangement where the rod spud and cushion sleeve comprise complementary continuously and gradually tapered portions forming an annular orifice having a cross-sectional area that dynamically, continuously and gradually decreases as an external tapered portion of the rod spud moves through an internal tapered portion of the cushion sleeve to the end of the piston stroke.
F16F 9/18 - Dispositifs à un ou plusieurs organes, p. ex. des pistons, des aubes, se déplaçant en va-et-vient dans des chambres et utilisant un effet d'étranglement comportant uniquement un déplacement rectiligne des parties travaillant avec un cylindre fermé et un piston déterminant, à l’intérieur de ce cylindre, plusieurs espaces de travail
F16F 9/49 - Tampons arrêtoirs limitant le passage du fluide, p. ex. tampons hydrauliques
F16F 9/58 - Butées pour limiter la course, p. ex. disposées sur la tige de piston à l'extérieur du cylindre
