| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 092061000 | RELATIVELY MOVABLE WORKING MEMBERS | 77 |
| 20090056533 | SWIVEL MOTOR - A swivel motor has a plurality of work chambers and a join system between the work chambers that joins the work chambers at least by pairs. The arrangement of the joined work chambers is carried out in such a way that the work chambers which are connected to the first pressure medium connection alternate with those which are connected to the second pressure medium connection. At least two work chambers associated with different pressure medium connections are connected to a pressure compensation element, and the pressure compensation element is formed by a compensation space that is divided by a movable dividing element. A partial compensation space is connected in each instance to at least one work chamber of a pressure medium connection, and the dividing element is held in an initial position by oppositely acting springs. The spring force characteristic is formed by a spring arrangement which comprises a plurality of springs and has at least one coil spring and one elastomer spring. At least one volume compensation space is available for the elastomer spring. | 03-05-2009 |
| 20090193965 | PISTON ARRANGEMENT - A piston arrangement is disclosed for metering valves, flow-rate sensors or hydraulic motors. The piston arrangement comprises a housing, at least one recess in the housing, and a first piston sealed and movable in the at least one recess of the housing. A recess is provided in the first piston, and a flow passage extends through the first piston. A second piston is movable in the recess of the first piston. A sealing surface is provided on the second piston, and a valve seat is provided on the first piston against which the sealing surface on the second piston can be pressed in such a way that the second piston can be moved in the first piston between a position which opens the flow passage through the first piston and a position which shuts off the flow passage through the first piston. | 08-06-2009 |
| 20120103181 | PNEUMATIC CYLINDER - A pneumatic cylinder includes a cylinder block, two piston rods, and two pairs of pistons. The cylinder block defines two receiving portions parallel to each other. Each receiving portion defines a first air chamber and a second air chamber; the second air chamber is in series with the first air chamber Each piston rod is partially received in one receiving portion. Each pair of pistons is sleeved on one piston rod, with two pistons received in the first air chamber and the second air chamber, respectively. | 05-03-2012 |
| 20130042751 | Fluid-Actuated Controller Capable of Feedback Regulation - A fluid-actuated controller, comprising a stationary housing having at least a one discrete internal chamber, each at least one discrete internal chamber being in fluid communication with the stationary housing exterior via an inlet opening; and a rotary actuator mounted in the stationary housing for rotary movement relative thereto, the rotary actuator including at least one piston for effecting rotary movement of the rotary actuator in a first direction. Each such piston is movably disposed in a discrete internal chamber, and each piston is movable within its associated internal chamber in response to a predefined increase in fluid pressure to effect rotary movement of the rotary actuator in the first direction. | 02-21-2013 |
| 20130042752 | Pump Body - A pump body is pre-compressed by expanding a displacement plug in a cavity to pre-compress a portion of a pump body comprising a piston bore, an inlet bore and an outlet bore spaced from said cavity, and connected in a pump assembly. A fluid pump assembly is made up of a plurality of pump bodies connected side by side between opposing end plates with a plurality of fasteners tightened to compress the pump bodies between the end plates, wherein each pump body comprises a piston bore, an inlet bore, an outlet bore and an expanded displacement plug in a cavity; and wherein the expanded displacement plug applies a pre-compressive force at the cavity on each of the pump bodies. | 02-21-2013 |
| 20130047835 | AIRCRAFT STORE EJECTOR SYSTEM - An aircraft store ejector systems and subsystems thereof. Embodiments can include a two-reservoir re-pressurization system wherein a remote reservoir is used to maintain desired pressure in a local ejector reservoir. The system can include a release valve having a vent valve and valve piston. The release valve can control release of pressurized gas to a pitch control valve. The pitch control valve can be configured to distribute the pressurized gas between two or more ejector piston assemblies. One or more of the ejector piston assemblies can include multiple concentric piston stages and piston chambers, the piston chambers configured to contain a volume of gas. The ejector piston assemblies can be configured to compress the volume of gas within the piston chambers as the piston stages are extended out from the aircraft. Such compression can provide a return force to the piston stages. | 02-28-2013 |
| 20130104730 | PUMP, IN PARTICULAR A HIGH-PRESSURE FUEL PUMP | 05-02-2013 |
| 20130104731 | GAS-LIQUID AUXILIARY SUPPORTER FOR A DRY GRANULATOR | 05-02-2013 |
| 20130152778 | Transmission Shifting Assembly and Method - An transmission servo assembly having a dual piston assembly for use in an automobile to transmission is described. The dual piston assembly includes a primary and a secondary piston that, when included within an assembly housing, provide surfaces that may be acted upon by a pressurized fluid so as to drive a servo pin into and away from a band within the transmission. The dual piston assembly allows for the application of a high apply force to servo pin while reducing the pressure of both an apply fluid and a release fluid, and therefore the amount of power used by a fluid pump external to the transmission servo assembly. The transmission servo assembly also substantially eliminates band drag by balancing the pressure applied to surfaces of dual piston system and by providing a biasing member designed and configured to provide suitable initial and ending forces to dual piston system. | 06-20-2013 |
| 20130291715 | APPARATUS FOR THE GENERATION OF WAVES IN THE MARINE ENVIRONMENT BY MEANS OF IMPACTING PISTONS AND GAS, HYDRAULIC, VAPOUR AND ELECTROMAGNETIC LAUNCHING SYSTEM FOR ACQUISITION OF SEISMIC DATA - Apparatus for the generation of pressure waves for seismic surveys in marine environment comprising a cylinder ( | 11-07-2013 |
| 20150075366 | Double-effect hydraulic actuating cylinder - A double-effect hydraulic actuating cylinder, particularly for hydraulic steering devices and for marine outboard motors, includes a cylinder slidably fitted on a coaxial rod, or vice versa, which sealingly projects out a head of the cylinder and carries a separating piston dividing the cylinder into two variable volume chambers, each connected to one of two inlets/outlets of the pump and a sealing head for the mutual sliding of cylinder and rod. The rod is non-slidably connected to a bracket fastening the cylinder to the motor, and an idler arm is secured to the motor and integral with the cylinder. At least one of the sealing heads include a sealing element engaging the inner side walls of one of the two variable-volume chambers, and a separate, coaxial plug element placed at the end parts of the cylinder and preventing the sealing element from sliding. | 03-19-2015 |
| 20150101480 | SHRINK STRUT LANDING GEAR SYSTEM, METHOD, AND APPARATUS - The landing gear systems, methods and apparatuses disclosed herein may comprise a shrink pump and an unshrink valve that are capable of shrinking a landing gear shock strut up to about 40% of its available stroke. The shrink pump may be configured to pump fluid (e.g., a hydraulic fluid) between an oil chamber, where hydraulic fluid is likely present and a shrink chamber to shrink the landing gear. Moreover, the shrink pump and unshrink valve may be part of a strut shrink system. | 04-16-2015 |
| 20150128798 | BICYCLE HYDRAULIC ACTUATING DEVICE - A bicycle hydraulic actuating device is provided with a housing, a non-linear piston and an operating member. The housing defines a chamber and has a fluid outlet. The non-linear piston is movably disposed in the chamber along a non-linear movement path between a first position and a second position. The operating member is operatively coupled to the non-linear piston so as to move the non-linear piston within the chamber between the first position and the second position in response to movement of the operating member. | 05-14-2015 |
| 20150321223 | PRESSURE WAVE GENERATOR WITH A SABOT LAUNCHED PISTON - Examples of a pressure wave generator configured to generate high energy pressure waves in a medium are disclosed. The pressure wave generator can include a sabot carrying a piston. The sabot can further comprise a locking means to lock the piston in a fixed position when the locking means are activated. When the locking means are in a deactivated position, the piston can be released and can move at least partially away from the sabot. The sabot carrying the piston can be disposed within an inner bore of a housing of the pressure wave generator and can move within the inner bore of the housing from its first end toward its second end along a longitudinal axis of the bore. A transducer can be accommodated in the second end of the housing. The transducer can be coupled to the medium and can convert a portion of the kinetic energy of the piston into a pressure wave in the medium upon impact of the piston with the transducer. The sabot carrying the piston can be accelerated by applying a motive force to the sabot. Once accelerated within the inner bore of the housing the sabot can be decelerated by applying a restraining force to the sabot while the piston can be released at least partially from the sabot to continue to move toward the transducer until it impacts the transducer. Examples of methods of operating the pressure wave generator are disclosed. | 11-12-2015 |
| 20160010666 | Rotary Piston Type Actuator with a Central Actuation Assembly | 01-14-2016 |
| 20160032948 | VARIABLE DISPLACEMENT PISTON-IN-PISTON HYDRAULIC UNIT - A piston-in-piston non-compressible unit is disclosed that utilises an elastic volume to store and release energy with each stroke by varying the non-compressible fluid volumes in and out of the hydraulic unit. | 02-04-2016 |
| 20160146229 | SYSTEM AND METHOD FOR ROTORS - A system includes a rotary isobaric pressure exchanger (IPX). The rotary IPX includes a sleeve. The rotary IPX also includes a rotor having a first longitudinal length in an axial direction disposed within the sleeve in a concentric arrangement. The rotor includes at least one groove disposed along the first longitudinal length. The at least one groove extends in a circumferential direction about the rotor. | 05-26-2016 |
| 20160153478 | Mobile Hydraulic Tool | 06-02-2016 |
| 20160160887 | Systems and Methods for Rotor Axial Force Balancing - A system includes a rotary isobaric pressure exchanger (IPX) including a rotor. The rotor includes a first axial end face and a second axial end face. The rotary IPX also includes a first endplate including a first axial surface disposed adjacent to the first axial end face of the rotor. The first endplate also includes a first low pressure fluid port and first high pressure fluid port. Additionally, the first endplate includes a channel formed in the first axial surface and extending from the first low pressure fluid port. Further, the first endplate includes a first low pressure sink formed in the first axial surface and extending from the first channel. The first channel is configured to route low pressure fluid from the first low pressure fluid port to the first low pressure sink. | 06-09-2016 |
| 20160160888 | ROTOR DUCT SPOTFACE FEATURES - A system includes a rotary isobaric pressure exchanger that includes a rotor. The rotor includes a first spotface formed on a first exterior surface of a first longitudinal end of the rotor adjacent to at least one channel. The at least one channel is disposed within the rotor and is configured to receive and to discharge a fluid flow. | 06-09-2016 |
| 20160160890 | SYSTEMS AND METHODS FOR ROTOR AXIAL FORCE BALANCING - A system includes a rotary isobaric pressure exchanger (IPX) configured to exchange pressures between a first fluid and a second fluid. The rotary IPX includes a sleeve, a rotor disposed within the sleeve in a concentric arrangement, a first endplate disposed proximate to a first axial face of the rotor, a second endplate disposed proximate to a second axial face of the rotor, and a plenum. The plenum includes a radial gap between an outer lateral surface of the rotor and an inner surface of the sleeve, a first axial gap between the first axial face of the rotor and the first endplate, and a second axial gap between the second axial face of the rotor and the second endplate. The plenum is asymmetric about an axial midplane of the rotor. The system also includes a hydrostatic bearing system configured to route a bearing fluid to the plenum. | 06-09-2016 |
| 20160168995 | VARIABLE DISPLACEMENT SYSTEM | 06-16-2016 |
| 20160169254 | OIL HYDRAULIC CYLINDER AND SPINDLE THEREOF | 06-16-2016 |
| 20160177979 | ACTUATOR WITH CENTRAL TORQUE MEMBER | 06-23-2016 |
| 092062000 | First working member moves second coaxial working member through separating abutment surfaces | 15 |
| 20090282971 | PNEUMATIC ACTUATOR - A pneumatic actuator ( | 11-19-2009 |
| 20110023702 | PNEUMATIC CYLINDER - The invention relates to a pneumatic cylinder ( | 02-03-2011 |
| 20140076156 | AIRCRAFT STORE EJECTOR SYSTEM - An aircraft store ejector systems and subsystems thereof. Embodiments can include a two-reservoir re-pressurization system wherein a remote reservoir is used to maintain desired pressure in a local ejector reservoir. The system can include a release valve having a vent valve and valve piston. The release valve can control release of pressurized gas to a pitch control valve. The pitch control valve can be configured to distribute the pressurized gas between two or more ejector piston assemblies. One or more of the ejector piston assemblies can include multiple concentric piston stages and piston chambers, the piston chambers configured to contain a volume of gas. The ejector piston assemblies can be configured to compress the volume of gas within the piston chambers as the piston stages are extended out from the aircraft. Such compression can provide a return force to the piston stages. | 03-20-2014 |
| 20140366717 | FLUID PRESSURE INCREASING/DECREASING MACHINE AND WORKING MACHINE - A fluid pressure increasing/decreasing machine can continuously supply an output pressure to a destination of supply by converting an input pressure from a source of supply. A control device selects at least one input pressure chamber and at least one output pressure chamber from among at least three pressure chambers in a fluid pressure cylinder or a plurality of fluid pressure cylinders operating inter-connectedly, the input pressure chamber being supplied with the input pressure, the output pressure chamber creating the output pressure including a pressure higher than the input pressure and a pressure lower than the input pressure. A flow control valve causes the selected input pressure chamber to communicate with the source of supply, and the selected output pressure chamber to communicate with the destination of supply. At least one of the pressure chambers is capable of being either of the input pressure chamber and the output pressure chamber. | 12-18-2014 |
| 20150114215 | COAXIAL DUAL REDUNDANT HYDRAULIC ACTUATOR SYSTEM - The various embodiments herein provide a coaxial hydraulic actuator assembly for an aircraft hydraulic system for providing the dual redundancy operations in normal and emergency operations. The embodiments herein adopt a coaxial hydraulic cylinder based actuator system comprising a conventional fixed cylinder with a moving piston actuator. The fixed cylinder with a moving piston actuator is located in a first region. The fixed cylinder with the moving piston actuator is manufactured in tandem with a moving cylinder with fixed piston actuator. The moving cylinder with a fixed piston actuator is located in a second region. The fixed piston actuator in the second region is also referred to as actuation rod. Further, the coaxial hydraulic cylinder based actuator system comprises a first adapter and a first cap for the first region. Similarly, a second adapter and a second cap are provided for the second region. | 04-30-2015 |
| 092063000 | With separate biasing means for a working member | 10 |
| 20100095836 | Slip Seal Diaphragm For Spring Brake Actuator - A brake actuator system of a vehicle comprising a diaphragm design with a hole and sealing element in the center. The design allows for the sealing element to seal and slide on the outer diameter of the center pushrod for the exposed length. This eliminates the need for a fixed joint to permanently attach the diaphragm to the center pushrod, and allows for the pushrod to be attached to the spring piston or a separate fixed plate and reduces stress of the diaphragm at its interface. | 04-22-2010 |
| 20100154627 | BRAKE ACTUATOR AND METHOD OF FORMING THE SAME - An improved diaphragm-type pneumatic brake actuator includes a flange case, a cover cooperable with the flange case, a flexible diaphragm extending between the flange case and the cover forming a lower pneumatic chamber and an upper pneumatic chamber on opposed sides of the diaphragm. A piston assembly is disposed in the cover for moving a spring between compressed and decompressed positions. A spring guide is disposed between the cover and the piston assembly in the upper chamber. The spring guide prevents direct contact of the spring with the cover to prevent formation of a corrosion cell. | 06-24-2010 |
| 20110023703 | TAMPER RESISTANT SPRING BRAKE ACTUATOR - A tamper resistant spring brake actuator with a stroke position indicator has a cover attached to a flange case by a removable clamp, with a head permanently attached to the flange case by a one-piece continuous clamp member, which is permanently deformed in place during assembly. The cover, flange case and head have annular rims, which are relatively flat and smooth. The one-piece continuous clamp ring is in contact with and clamps the outer flanges of the flange case, the parking chamber diaphragm and the head. The stroke position indicator can be treated with a surface protector to minimize the accumulation of oil and road debris. | 02-03-2011 |
| 20110219946 | Non-Threaded Method for Assembling a Center Hole Parking Diaphragm and Adapter Push Rod with a Clip and Washer - A brake actuator having a plurality of actuator housing portions includes a diaphragm seal partially delimiting a parking brake de-actuation chamber and retained between adjacent portions of the housing. To produce brake actuation upon depressurization of the parking brake de-actuation chamber, a push rod extends into and out of a service brake actuation chamber upon release of fluid pressure from and supply of fluid pressure to the chamber. A clip or similar element receivable over the end section of the push rod is securable on the end section to compress the diaphragm seal axially relative to the push rod against a seat carried by the push rod while permitting a radial inner edge of the diaphragm seal to remain spaced from an outer surface of the end section. | 09-15-2011 |
| 20130239798 | Non-Pressure Plate Stone Shield with Energy Absorbing Lugs, and Pushrod Shield for Welded Clevis - A fluid pressure operable actuator includes a housing, with an end wall, and a pushrod projecting through an opening in the end wall for reciprocation upon service pressure application or release. A shield, configured as an annulus, is disposed on the pushrod to restrict contamination of an interior chamber of the actuator housing through a gap existing between an edge of the opening and a pushrod outer surface. To facilitate connecting the shield and the pushrod together, the annulus has a slit with an enlarged void at a radially outer end of the slit. This enlarged void engages an outer pushrod surface as the shield and the pushrod are joined. | 09-19-2013 |
| 20130239799 | Spring Brake Actuator with a Caging Bolt Bearing Joining a Pressure Plate and Actuator Tube - A pneumatic brake actuator has a housing and a divider that divides the housing into a spring chamber containing a spring and a pressure chamber. The divider has an opening that receives an end of an actuator tube. A bearing that is positioned within the opening in the divider is joined to both the divider and the actuator tube. A caging bolt has a first end positioned within the actuator tube and extends from the first end through openings in the hearing and housing to a second end positioned outside of the housing. The connection between the bearing, divider and actuator tube contains the spring within the housing in the event that the housing and/or divider fails. The divider can be a piston or a diaphragm and pressure plate. The bearing can be joined to either of the divider and actuator tube with threads and/or by welding. | 09-19-2013 |
| 20140096677 | DEFLECTION SPRING PNEUMATIC ACTUATOR - A pneumatic actuator includes a housing defining a chamber. A diaphragm is positioned within the chamber. A rod member is attached to the diaphragm and is movable between a first position and a second position. A cam member is attached to the diaphragm and to the rod member. The cam member has a cam surface. A deflection rod has a first end portion and a second end portion, where the first end portion of the deflection rod is attached to the housing A follower is attached to the second end portion of the deflection rod. The follower engages the cam surface of the cam member so as to time the rod member towards the second position. | 04-10-2014 |
| 20140305300 | BRAKE ACTUATOR - The present disclosure is directed to ensuring a brake to be smoothly locked and released by preventing an air pressure of a spring chamber or a pressure chamber of an air operated brake actuator from being excessively compressed, and also solving a buckling phenomenon of a compression spring. | 10-16-2014 |
| 20140326127 | Spring Brake Actuator and Method for Making a Spring Brake Actuator - A brake actuator is provided, in which a diaphragm, used in conjunction with a piston which compresses a parking brake-actuating spring, is arranged such that its outer peripheral region is captured between opposing housing flange portions such that a seal between the interior and exterior of the brake actuator housing is provided in a radially-oriented region of the diaphragm and the housing flange portions away from housing portion jointing components such as a clamp ring or individual fasteners. The diaphragm may also be provided with a wedge-shaped portion at its outer periphery which is axially oriented and configured to reside in a corresponding annular gap between the opposing housing flange portions. | 11-06-2014 |
| 20150096437 | ACTUATOR FOR RAT DEPLOYMENT - An assembly includes an actuator assembly having a housing, a piston positioned at least partially within the housing and movable relative to the housing for an overall actuation stroke, a first spring operatively engaged between the piston and the housing to provide actuation biasing force therebetween, a second spring operatively engaged with the piston, and a spring guide. The spring guide is operatively engaged with the first spring and operatively engaged with the piston via a sliding connection. The spring guide is further configured to limit a stroke of the first spring such that the first spring contributes actuation biasing force between the piston and the housing for only a fractional portion of the overall actuation stroke of the piston. | 04-09-2015 |
| 092066000 | Moving cylinders | 1 |
| 20140020553 | Reciprocating Compressor - A reciprocating compressor includes a piston which compresses air by, while rocking, reciprocatingly moving in a cylinder and a sealing member which is fitted in a groove formed on the piston for sealing between the cylinder and the piston. In the reciprocating compressor: the sealing member has a bottom portion to be fitted in the groove formed on the piston and a side portion provided radially outwardly of the piston; and the side portion includes a bent portion so as to reduce a gap between an upper end portion thereof and the piston. | 01-23-2014 |
| 092067000 | Oscillating working members | 2 |
| 20100269688 | Piston Machine - A piston machine comprises a housing, in which at least one first piston is arranged which can be moved to and fro between two end positions in order to periodically increase and reduce the size of a working chamber adjoining a first end face of the at least one first piston, the at least one first piston having at least one guiding member, which is in engagement with a control curve which is formed on a curve member arranged in the housing, the curve member extending concentrically and circumferentially in the housing, all the way round an axis of revolution which is fixed relative to the housing, and being arranged radially to the outside of the piston in relation to the axis of revolution, a second piston being situated opposite the at least one first piston and performing opposing reciprocating movements relative to the first piston, the second piston having a second end face, which faces the first end face of the first piston, and the working chamber being situated between the end faces. The curve member is mounted in the housing in such a way that it can revolve about the axis of revolution, while the at least one first piston and the second piston cannot revolve about the axis of revolution, with the result that the at least one first piston and the second piston perform reciprocating movements in a plane of movement which is fixed relative to the axis of revolution when the curve member revolves about the axis of revolution. | 10-28-2010 |
| 20140208936 | OSCILLATING ACTUATOR - To provide an oscillating actuator which is capable of easily changing an oscillation start position of a shaft. An oscillating actuator includes an actuator main body | 07-31-2014 |
| 092068000 | Interconnected with common rotatable shaft | 32 |
| 20100288120 | SINGLE-ACTING ROTARY ACTUATOR - A rotary actuator comprises a housing, a shaft, at least one piston, and at least one closed-wound power spring coupled to the shaft. The housing defines a cavity. The shaft is disposed supported within the cavity of the housing and adapted for rotational displacement between a first position and a second position. The at least one piston is supported within the cavity of the housing and operatively coupled to the shaft. The piston is adapted for sliding displacement in association with rotational displacement of the shaft. The at least one closed-wound power spring is disposed within the cavity of the housing and operatively coupled to the shaft. So configured, the closed-wound power spring biases the shaft and the at least one piston into a predetermined relationship. | 11-18-2010 |
| 20110283878 | Rotary Pump - A rotary pump is provided having a chamber arranged in a body and a displacement member disposed in the chamber for reciprocating therein. A drive member is used to move the displacement member within the chamber in response to relative rotation between the body and the drive member. A radial valve arrangement may be used to time when the chamber is in fluid communication with inlet and outlet ports on the pump. | 11-24-2011 |
| 20120036996 | Piston Pumps for a Hydraulic Vehicle Brake System - A piston pump as a recirculating pump of a hydraulic traction control vehicle brake system is disclosed, with two pump pistons which are arranged in an opposed arrangement and bear on the outside against an eccentric bearing ring for their lifting drive. The pump pistons are arranged with an offset in the longitudinal direction of a pump shaft, so that they exert a moment upon the bearing ring, which moment presses rolling bodies in the rolling bearing against the pump shaft even when the forces with which the pump pistons press from outside against the bearing ring cancel one another. The rolling bodies roll even when the forces of the pump pistons are compensated. | 02-16-2012 |
| 20160153476 | Linear Actuator | 06-02-2016 |
| 20160153477 | Linear Actuator | 06-02-2016 |
| 092069000 | Oppositely movable walls of common chamber (50) (75) | 2 |
| 20140298989 | Pump Element of a Hydraulic Unit for a Vehicle Brake System - A pump element of a hydraulic unit for a vehicle brake system is configured to deliver brake fluid via a piston that is mounted so as to reciprocate in a cylinder. The piston has a first and a second active surface, of which the first active surface is configured to cause brake fluid to be delivered from the cylinder during forward movement of the piston, and the second active surface is configured to cause brake fluid to be delivered from the cylinder during backward movement of the piston. | 10-09-2014 |
| 092070000 | Shaft axis parallel to axes of working members (71) | 1 |
| 20090126561 | SWASH PLATE PIVOT BEARING - A swash plate pivot bearing is provided having roller bearing segments ( | 05-21-2009 |
| 092071000 | Shaft axis parallel to axes of working members (70) | 16 |
| 20080223207 | WATER HYDRAULIC MACHINE - Motor start circuit for an induction motor, particularly a single-phase AC induction motor, with a main winding ( | 09-18-2008 |
| 20080223208 | Assembly structure of drive shaft and swash plate in swash plate type compressor - Provided is an assembly structure of a drive shaft and a swash plate in a swash plate type compressor including a housing, a cylinder block having a plurality of cylinder bores, a drive shaft rotatably supported by the cylinder block or the housing, a swash plate installed at the drive shaft to vary its tilt angle with respect to the drive shaft, and pistons reciprocally accommodated in the cylinder bores, characterized in that the assembly structure includes: a swash plate tilt support pin fixedly installed at the drive shaft to cross the drive shaft; a hinge coupling groove formed in the swash plate to be rotatably coupled to a tip of the swash plate tilt support pin in a tilted manner, and a swash plate support part formed in the swash plate to support the drive shaft. | 09-18-2008 |
| 20090013864 | Connecting Plate of a Hydrostatic Machine and Method for Producing the Connecting Plate - The invention relates to a connecting plate and to a method for producing connecting plates of hydrostatic machines. The connecting plate is cut to length from a previously produced extruded profile to give connecting plate blanks and is then finished. | 01-15-2009 |
| 20090031894 | Sliding Device - A sliding device | 02-05-2009 |
| 20090064856 | BALL SUPPORTED SWASHPLATE FOR AXIAL PISTON HYDRAULIC MACHINE - An axial piston hydraulic machine having a housing with a cylinder block with reciprocating pistons disposed therein. The reciprocating pistons are rotatably connected to a swashplate at a first end of the swashplate. At a second end of a swashplate support balls are received and engage the housing. The support balls are located radially from the plurality of reciprocating pistons such that the distance between the axis of rotation of an input shaft and a piston axis of the plurality of pistons is significantly less than the radial distance between the axis of rotation of the shaft and the center points of the support balls, and wherein the pivot axis passing through the center points of the support balls lies in or near the plane passing through the piston/slipper ball joints. | 03-12-2009 |
| 20090151552 | SHOE FOR COMPRESSORS - A shoe for compressors, in which lightening and practical strength can be made compatible with each other, is provided. A shoe for compressors, according to the invention, comprises a base portion having a swash-plate sliding contact surface in sliding contact with a swash plate and a semi-spherical portion made integral with the base portion and having a bearing-seat sliding contact surface in sliding contact with a bearing seat, which is in the form of a spherical surface and provided concavely on a piston. A cavity is formed between the base portion and the semi-spherical portion. The base portion and the semi-spherical portion are connected to each other by a solid connecting portion, which passes through centers of the both portions and extends in a central direction of the both portions. | 06-18-2009 |
| 20110079139 | Wobble Plate Type Variable Displacement Compressor - Disclosed is a wobble plate type variable displacement compressor that uses a constant velocity universal joint mechanism, which comprises an inner ring and an outer ring, balls that are held between guide grooves of the inner ring and the outer ring to transmit power, wherein a wobble plate is connected and fixed to the outer ring. In the compressor, at least any one of the guide grooves opposing each other of the inner and outer rings is formed along a guide groove cross-sectional profile to come into contact with a ball at two points. With this wobble plate type variable displacement compressor using the specified constant velocity universal joint mechanism, the ball retaining structure between the inner and outer rings in the wobble plate rotation preventing mechanism can be improved, and desired power transmission can be stably performed. | 04-07-2011 |
| 20110107908 | SHOE | 05-12-2011 |
| 20110192276 | AXIAL PISTON MACHINE OF SWASHPLATE DESIGN - An axial piston machine of swashplate design includes a cylindrical drum which is rotatably supported in a housing and has a plurality of cylindrical bores with pistons longitudinally displaceable therein which rest against a swashplate via a joint. The joint has a first joint part with a spherical head and a second joint part with a spherical seat for the head. The joint can be manufactured quickly and using simple, economical production engineering, in that the first joint part is rotatably held in the second joint part, which has an annular groove in the inner surface of a tubular edge, into which a wire has been introduced through a bore. | 08-11-2011 |
| 20120279387 | AXIAL PISTON MACHINE HAVING A SWASHPLATE DESIGN - An axial piston machine having a swashplate design includes a cylinder drum that is rotatably supported in a housing and that has a plurality of cylinder bores, which have pistons that can be slid longitudinally in said cylinder bores and that are supported on a swashplate. The aim of the disclosure is to achieve an improvement in the efficiency with a short length design by means of reducing the lost forces. The aim is achieved in that no force components act on the pistons in the radial direction. | 11-08-2012 |
| 20120291625 | Nutating swash plate ball bearing assembly - A swash plate assembly includes a mounting flange. A center ring is disposed in the mounting flange and is rotatable relative to the mounting flange about a center ring axis of rotation. A swash plate is disposed in the center ring and is rotatable relative to the center ring about a swash plate axis of rotation. The swash plate assembly includes a first plurality of balls disposed between the mounting flange and the center ring and a second plurality of balls disposed between the center ring and the swash plate. The center ring defines an inner raceway adapted to receive the first plurality of balls and the center ring defines an outer raceway adapted to receive the second plurality of balls. | 11-22-2012 |
| 20130167713 | SHOE FOR SWASH PLATE TYPE COMPRESSOR - A shoe for a swash plate type compressor is disposed between a swash plate provided on a rotational shaft in an inclined manner, the swash plate being configured to be rotated together with the rotational shaft, and a piston configured to be reciprocated in a direction in which the rotational shaft extends, by means of the rotation of the swash plate. The shoe for swash plate type compressor includes a flat surface in contact with the swash plate, and a spherical surface in contact with a semispherical slide surface formed on the piston. A through-hole communicating the flat surface and the spherical surface with each other is formed between the flat surface and the spherical surface. The through-hole is composed of a first through-hole having a first diameter and a second through-hole having a second diameter that is larger than the first diameter. | 07-04-2013 |
| 20160131117 | Hydraulic Machine Comprising Cylinders Provided With Angularly Offset Openings - A hydraulic machine comprising a drum ( | 05-12-2016 |
| 20160160846 | PISTON DRIVE ASSEMBLY - A piston drive assembly, including: a housing enclosing each of: a plurality of cylinders, each cylinder having an axis substantially parallel to the axis of the other cylinders; a plurality of pistons, one piston in each cylinder; a wobble plate connected to each of the plurality of pistons; a swashplate rotatably fixed to a drive shaft such that the drive shaft can rotate the swash plate or the swash plate can rotate the drive shaft, wherein the drive shaft extends through the entire length of the housing. | 06-09-2016 |
| 20160377066 | WATER-HYDRAULIC MACHINE - A water-hydraulic machine ( | 12-29-2016 |
| 20190145386 | MAGNETIC PISTON SHOE PAIR FOR AXIAL PISTON PUMP AND MOTOR AND CONTROL METHOD THEREOF | 05-16-2019 |
| 092072000 | Shaft axis intersected by axes of working members | 9 |
| 20080289488 | RECIPROCATING FLUID MACHINES - A scotch yoke type fluid device in which the pistons are decoupled from each other is provided. Each piston of the device has its own pair of sliding surfaces and its own slider. The sliding surface of each piston is disposed on the same side of a big end bearing of a crank. The main axis of the crank is movable along a path such that the pistons are neither substantially retarded nor advanced. The effective centre of mass of the crank, piston and slider remains stationary relative to the crank axis. Each piston includes a guide for constraining the piston to move along the piston axis. An intermediate member may interconnect the piston and the slides. | 11-27-2008 |
| 20090120280 | FUEL INJECTION PUMP AND METHOD FOR ASSEMBLING THE SAME - A housing has a cylinder and a compression chamber. A plunger is slidable in the cylinder and configured to pressurize fuel in the compression chamber. A cam is eccentric with respect to a shaft center axis of a camshaft and integrally rotatable with the camshaft. A sliding member is slidable around an outer circumferential periphery of the cam and configured to revolve around the shaft center axis in conjunction with rotation of the camshaft. The plunger is slidable on the sliding member and configured to convert the revolution into a linear movement. The cam and the sliding member are accommodated in the housing. The sliding member has an opening through which the outer circumferential periphery is partially exposed. | 05-14-2009 |
| 20130047836 | MULTI-SPEED HYDRAULIC PUMP - Hydraulic pump applications sometimes require the pump to be able to provide relatively low pressure with larger amounts of fluid moved, while other applications call for relatively higher pressures but less fluid moved. The multi-speed hydraulic pump can operate at multiple speeds so as to provide multiple outputs of pressure and flow. In a two-mode version, the pump has one mode of operation that provides for lower pressure/more fluid moved and another mode of operation that provides for higher pressure/less fluid moved. Having multiple modes of operation in the pump allows for a single pump to provide greater movement or greater pressure while working within the limits of the force or speed at which the pump is actuated. | 02-28-2013 |
| 20130098239 | RADIAL HYDRAULIC PUMP WITH A VARIABLE ECCENTRICITY AND DELIVERY - This hydraulic pump includes a frame, a pump shaft capable of being rotated by a thermal or electric motor, around an axis which is stationary with respect to the frame, an eccentric sleeve engaged with the pump shaft, and at least one stage of pistons arranged to be stationary with respect to the frame and radially extending in pump cylinders defining chambers. | 04-25-2013 |
| 20150114216 | HYDRAULIC RADIAL PISTON DEVICES - A radial piston device includes a housing and a pintle fixed thereto that includes an inlet and an outlet, each aligned with a pintle axis. A rotor is rotatably disposed around the pintle and includes radially oriented cylinders. A piston is axially displaceable in each cylinder and includes a head defining a spherical contact surface. A thrust ring is rotatably disposed within the housing about the rotor and is in contact with each piston, such that a rotation of the rotor rotates the thrust ring. An inner surface of the thrust ring defines a toroidal contact surface. A contact location between the spherical contact surface and the toroidal contact surface varies as the rotor rotates about the pintle. A drive shaft is engaged with the rotor, such that a rotation of the rotor rotates the drive shaft. | 04-30-2015 |
| 20150308419 | VEHICLE - It is intended to provide a vehicle comprising a fluid working machine which can reduce wear of parts and be produced at low cost. The fluid working machine | 10-29-2015 |
| 092073000 | Parallel working members | 3 |
| 20100139477 | PISTON RATCHET ENGINE - An engine design incorporating at least one piston synchronized via a ratchet or sprag freewheel mechanism. | 06-10-2010 |
| 20160169216 | COMPRESSOR | 06-16-2016 |
| 092074000 | Shaft extends transversely through working members | 1 |
| 20160102662 | PUMP ASSEMBLY - A pump assembly for supplying negative pressure to a pneumatic brake booster, wherein the pump assembly has at least two elastic displacement elements which are moved by connecting rods, the connecting rods each being rotatably mounted on an eccentric element. The eccentric element has a bearing seat element and a force element. At least two eccentric elements are secured next to each other on a drive shaft that rotates about an axis of rotation and an interlocking anti-rotation device is provided that determines a defined angular position of the eccentric elements relative to each other about the axis of rotation. In order to improve the ease of assembly and simplify the manufacturability, the anti-rotation device is designed as shaped elements of the bearing seat element in such a way that they engage in each other in an interlocking manner when the eccentric elements are in a defined angular position relative to each other. | 04-14-2016 |
| 092075000 | Oppositely movable walls of common chamber (50) (69) | 1 |
| 20110061525 | In Situ Testing of Mechanical Properties of Cementitious Materials - A system for measuring one or more physical properties of cementitious material is operable to cure a slurry of cementitious material under desired conditions of temperature and pressure. Particularly, the system may be operable to cure the slurry under a temperature and pressure expected to be experienced downhole. The system may also be used to determine properties of the cured cementitious material, such as maximum yield strength and shear bond strength at the desired temperature and pressure. The desired conditions of temperature and pressure may be applied both during curing and testing of the cementitious material. | 03-17-2011 |
| 092076000 | Interconnected by linkage having relatively movable members | 2 |
| 20160083071 | ACTUATOR SYSTEM FOR AN ACTUATABLE DOOR AND AN AIRCRAFT HAVING SUCH AN ACTUATABLE DOOR - An actuator system for an actuatable door, the actuator system comprising a stiff hinge arm, the stiff hinge arm being adapted to pivotally support the actuatable door and to be pivotally mounted to an associated door mounting structure, wherein an actuator with a pneumatically operable actuating rod is provided, the actuating rod comprising a coupling rod joint that is connected to at least one coupling rod, the at least one coupling rod being mounted to at least one torque lever that is pivotally mounted in at least one hinge of the stiff hinge arm by means of at least one torsion bolt, the at least one torsion bolt being drivingly connectable to the actuatable door. The invention is further related to an aircraft having such an actuatable door. | 03-24-2016 |
| 20160109599 | Compliance Chambers for Marine Vibrators - A marine vibrator may include a containment housing, a sound radiating surface, and a compliance chamber. The compliance chamber may include a compliance chamber housing, a non-linear linkage assembly, and a low pressure chamber. The compliance chamber housing may define at least a portion of a compliance chamber internal volume having a compliance chamber internal gas pressure. The low pressure chamber may comprise a low pressure piston and a low pressure chamber housing. The low pressure chamber housing may define at least a portion of a low pressure chamber internal volume having a low pressure chamber internal gas pressure. The low pressure piston may be configured to move in response to a pressure differential across the low pressure piston such that a resonance frequency of the marine vibrator may be changed. | 04-21-2016 |
