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| Number | Title | Issue Date |
| 8418599 | Axial piston machine having a return device An axial piston machine is provided. The pivoting cradle of the axial piston machine has variable tilt. The axial piston machine has at least one adjustment device extending substantially in the longitudinal direction of the axial piston machine. The axial piston ma... | 04/16/2013 |
| 8365653 | Hydraulic pump A pump has an axial drive shaft with a cam fence that extends radially outwardly from an axis of the drive shaft. The cam fence axially displaces, in respective cylinders, each of a plurality of elongate pistons arranged in parallel to and around the axis and angula... | 02/05/2013 |
| 8327751 | Wabble plate type variable displacement compressor A wabble plate type variable displacement compressor comprises a rotation preventing mechanism of the wabble plate which includes (a) an inner ring provided movably in the axial direction although rotation is prevented, supporting a main shaft at the inner diameter ... | 12/11/2012 |
| 8230773 | Axial piston compressor, in particular a compressor for the air conditioning system of a motor vehicle Axial piston compressor, especially a compressor for the air-conditioning system of a motor vehicle, having a housing and, for drawing in and compressing a coolant, a compressor unit arranged in the housing and driven by means of a drive shaft, the compressor unit c... | 07/31/2012 |
| 8205539 | Two bolt adjustable centering system A centering mechanism for a hydraulic pump, a hydraulic pump assembly and a method of assembling a hydraulic pump assembly. The pump assembly generally includes a hydraulic pump, a control arm, and a centering mechanism. The pump generally includes a pump housing, a... | 06/26/2012 |
| 8074558 | Axial piston device having rotary displacement control An axial piston device for use with a hydraulic system is disclosed. The axial piston device may have a body defining at least one bore and having a central axis, a pump piston disposed within the at least one bore to at least partially define a pumping chamber, and... | 12/13/2011 |
| 8028614 | Wobble plate compressor An object of the present invention is to provide a wobble plate compressor equipped with a mechanism for preventing the rotation of the wobble plate which is simply structured, producible at low cost, and does not cause heavy noise or vibration. A wobble plat... | 10/04/2011 |
| 8006610 | Axial piston machine in a swash-plate construction having an adjusting device An axial piston machine in a swash-plate construction with an actuating device. The actuating device comprises a actuating piston and a mating piston. The actuating piston and the mating piston are connected to the swash plate each with the first end thereof and can... | 08/30/2011 |
| 8001883 | Return to neutral device for a hydraulic apparatus In a hydrostatic device using an axial piston pump, a yoke is mounted so that it contacts the movable swash plate of the hydrostatic transmission. The yoke is biased by a spring-type mechanism to force the swash plate to return to neutral, and the set position of th... | 08/23/2011 |
| 7992484 | Rotary hydraulic machine and controls A variable capacity hydraulic machine has a rotating group located within a casing and a control housing secured to the casing to extend across and seal an opening in the casing. The control housing accommodates a control circuit and a pair of sensors to sense chang... | 08/09/2011 |
| 7980167 | Axial piston compressor Axial piston compressor, especially for motor vehicle air-conditioning systems, having a tilt plate (2), especially a ring-shaped tilt plate, which is variable in terms of its inclination with respect to a drive shaft (1) and which is driven in rotatio... | 07/19/2011 |
| 7975599 | Regulating device for a hydrostatic piston engine with electronic control unit A regulating device for a hydrostatic piston engine is provided. The regulating device (30) has an electronic control unit (17) for generating adjusting signals. An adjusting position of the hydrostatic piston engine scanned by a feedback element (3... | 07/12/2011 |
| 7963209 | Water hydraulic machine Motor start circuit for an induction motor, particularly a single-phase AC induction motor, with a main winding (4) and an auxiliary winding (5), which are supplied with current, particularly alternating current, via current supply connections (24, ... | 06/21/2011 |
| 7908960 | Return to neutral mechanism for hydraulic pump A return to neutral mechanism includes a hub, a lever and a biasing member. The hub is configured to connect fast to a control rod of an associated hydraulic pump. The lever connects to the hub and includes a location configured to connect to an associated linkage t... | 03/22/2011 |
| 7891285 | Bearing restricting device in swash plate hydraulic pump or motor In a swash plate hydraulic pump or motor structured so that a convex arc surface on the back surface of a swash plate is supported on a concave arc surface of a swash plate support via a bearing in a manner enabling the arc surface to swing in the circumferential di... | 02/22/2011 |
| 7806040 | 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 ar... | 10/05/2010 |
| 7802512 | 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 in... | 09/28/2010 |
| 7793582 | Swash plate pivot bearing A swash plate pivot bearing is provided having roller bearing segments (15) arranged between a hollow cylindrical bearing surface (12) for a swash plate (10) in a housing (3) and a cylindrical bearing surface (11) on the swash plat... | 09/14/2010 |
| 7757598 | Hydrostatic bearing arrangement for pump swashplate having secondary angle A hydraulic axial piston pump is designed with a secondary swashplate angle for providing improved performance and life. The secondary swashplate angle produces a sideload on the swashplate that is reacted by the pump's housing. A hydrostatically balanced thrust bea... | 07/20/2010 |
| 7757597 | Variable displacement swash plate type compressor with smooth inclined moving feature A variable displacement swash plate type compressor with a smooth inclined moving feature which includes a cylinder block having a plurality of cylinder bores, a front housing disposed at a front end of the cylinder block to form a swash plate chamber, a drive shaft... | 07/20/2010 |
| 7730827 | Attachment structure of swash plate support and hydraulic apparatus To provide an attachment structure of a swash plate support, that is, an attachment structure which suppresses an unstably fixed state of the swash plate support and realizes easy attachment and detachment of the swash plate support to and from a casing. A casing of... | 06/08/2010 |
| 7730826 | Swashplate type axial piston device having apparatus for providing three operating displacements An axial piston hydraulic device. The device has a housing that uses a servo piston in order to control the displacement of a swashplate within the device. By using a servo member disposed within a cavity of an end cap on the housing the axial piston hydraulic devic... | 06/08/2010 |
| 7703376 | Hydraulic apparatus return to neutral mechanism A return to neutral mechanism to bias the trunnion of a hydraulic apparatus into the neutral position is provided. The trunnion is rotationally coupled to a bracket which is coupled to a glide member that is positioned between, and biased to a predetermined position... | 04/27/2010 |
| 7681487 | Tandem axial piston pump unit A hydraulic machine (60, 70) comprising a housing (12, 14, 16) and at least first and second hydraulic units. Each unit comprising a cylinder block (36A, 36B) located in the housing and having pistons (42), and a shaft (18, 20 | 03/23/2010 |
| 7661351 | Hydrostatic axial piston machine and use of said machine The invention relates to a hydrostatic axial piston machine having a cylinder block which can be rotated about a first axis, the cylinder block being provided with a plurality of cylinder bores which extend in the axial direction and which are arranged on a partial ... | 02/16/2010 |
| 7647859 | Swash ring compressor A variable displacement compressor is disclosed. The compressor includes a crankcase for receiving a fluid. The crankcase has a plurality of compression chambers in which the fluid is compressed. A plurality of pistons disposed within the crankcase and are configure... | 01/19/2010 |
| 7617761 | Opposing pump/motors Two motors are arranged on opposing sides of a common shaft, drive plates of the pump/motors being rigidly coupled to each other, for example by being in hard contact with opposing sides of the shaft. By providing hard contact between the pump/motor drive plates and... | 11/17/2009 |
| 7591215 | Variable displacement hydraulic machine having a swash plate A hydraulic machine having a housing, a cylinder block located in the housing and having axial pistons slidably movable in cylinders, a shaft rotationally connected to the cylinder block, and a swash plate in load engagement with the pistons of the cylinder block. T... | 09/22/2009 |
| 7587970 | Reciprocating piston machine A reciprocating piston machine, such as an air-conditioning compressor for motor vehicles, including a pivot ring and a guide sleeve that is provided axially slidably on a drive shaft and is provided with radially projecting bearing sleeves. The pivot ring and the g... | 09/15/2009 |
| 7490540 | Reciprocating compressor, in particular COcompressor for vehicle air-conditioning units Reciprocating compressor (100), in particular CO2 compressor for vehicle air-conditioning units, with a swivel disk (107), in particular annular in form, that is rotated by a drive shaft (104) and can be positioned at an adjustable an... | 02/17/2009 |
| 7458311 | Return to neutral for dual hydrostatic transmission A return to neutral mechanism for a dual hydrostatic transmission includes a plurality of return to neutral control arms, each return to neutral control arm biased toward a neutral position. Each return to neutral control arm moves in response to forward or reverse ... | 12/02/2008 |
| 7455008 | Swash plate compressor A first swash plate 18 is coupled to a drive shaft 16 to be rotatable integrally with the drive shaft 16. Single head pistons 23 are coupled to the first swash plate 18 via shoes 25A, 25B. Rotation of the drive shaft ... | 11/25/2008 |
| 7455009 | Hinge for a variable displacement compressor A variable displacement compressor is provided. The compressor has a crankcase, a plurality of pistons, a swash plate, and a rotor assembly. The crankcase has a plurality of chambers for receiving a fluid. The plurality of pistons are disposed within the cylinder bl... | 11/25/2008 |
| 7451687 | Hybrid nutating pump A nutating pump for creating pressure or a vacuum. The nutating pump includes a housing with a center support positioned within said housing. The center support includes a semi-spherical recess. The pump also includes a drive shaft adapted to be connected to an elec... | 11/18/2008 |
| 7444921 | Swash ring compressor A variable displacement compressor is disclosed. The compressor includes a crankcase for receiving a fluid. The crankcase has a plurality of compression chambers in which the fluid is compressed. A plurality of pistons disposed within the crankcase and are configure... | 11/04/2008 |
| 7438029 | Piston waveform shaping An assembly includes at least one piston, a rotating member, a transition arm, and a mechanism. The transition arm is configured to translate between rotational movement of the rotating member and a first linear motion of the piston. The mechanism is configured to s... | 10/21/2008 |
| 7428812 | Hydraulic tool with wobble plate transmission A hydraulic tool including a motor; a hydraulic pump comprising only one reciprocating piston pump member; and a transmission connecting the motor to the hydraulic pump. The transmission includes a wobble plate and at least one spring. The wobble plate includes a fr... | 09/30/2008 |
| 7406912 | Swash plate compressor A swash plate compressor includes a housing that has a cylinder bore and rotatably supports a drive shaft. A swash plate is operatively coupled to the drive shaft for rotation therewith. A piston is accommodated in the cylinder bore for reciprocating movement. First... | 08/05/2008 |
| 7380492 | Hydrostatic variable displacement unit having a swash plate and a servo system having a spring arrangement A hydrostatic variable displacement unit is provided having a swash plate which serves to adjust the stroke of displacement pistons in a cylinder block and can be pivoted in its angular position by means of a servo system, the servo system having at least one servo ... | 06/03/2008 |
| 7380399 | Static hydraulic continuously variable transmission To provide a short connection hydraulic path structure with a sufficiently large diameter to adequately lower the pressure in a high-pressure hydraulic path while the clutch is off, in a static hydraulic continuously variable transmission for sliding a clutch valve ... | 06/03/2008 |
