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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...
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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...
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7373871 |
Swash plate for a hydraulic drive apparatus
A swash plate apparatus is provided for use in connection with the axial pistons of a rotatable cylinder block in a hydraulic device to modify the output of the cylinder block. The swash plate...
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7373870 |
Universal hybrid engine, compressor and pump, and method of operation
The universal hybrid ( 26 ) comprises a two-cycle engine ( 28 ), boosted by the engine power reciprocating compressor ( 32 ) and a hydraulic pump ( 34 ). The pump plunger ( 148 ) fastened to engine...
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7367258 |
Longitudinally adjustable reversible axial piston machine
The invention relates to a reversible axial piston machine ( 1 ) consisting of a cylinder drum ( 5 ) which rotates about a rotational axis ( 7 ) and in which pistons can be displaced in cylinders (...
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7357067 |
Spherical joint of a hydrostatic piston machine
A hydrostatic piston machine having a cylinder block with several cylinders, in which are slidably mounted pistons in load engagement with a reaction member via transmission members, each...
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7340891 |
Axle driving system
An axle driving system which houses in a housing thereof a hydrostatic transmission, axles, and a driving gear train for connecting output means of the hydraulic transmission and axles, so as to...
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7340890 |
Hydraulic apparatus with return to neutral mechanism
A control mechanism for a hydraulic drive apparatus such as a transaxle having a hydraulic pump and moveable swash plate mounted in a housing including a control arm for moving the swash plate...
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7334513 |
Axial piston machine having a fixable slide block on the swash plate
The invention relates to an axial piston machine having a swash plate ( 12 ) and a control piston ( 18 ) which contacts the swash plate ( 12 ) by way of a slide block ( 31 ) which is partially...
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7331271 |
Variable stroke/clearance mechanism
An assembly includes a cylinder ( 232 ) and a piston assembly ( 212 ) housed within the cylinder and configured for reciprocal motion relative to the cylinder. The piston assembly and cylinder...
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7322271 |
Rotary radial piston machine
A rotary displacement machine ( 10 ) with radial pistons ( 19 ), includes a bearing ( 29 ) having a rotating thrust ring ( 28 ) and a stationary outer ring ( 30 ), with bearing rollers ( 31 )...
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7313915 |
Assembly for use with a return to neutral mechanism
A control assembly for use with hydraulic apparatus having a housing, a trunnion extending from the housing, a return arm and a control arm mounted on the trunnion. The control assembly is attached...
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7305915 |
Efficient pump/motor with reduced energy loss
A bent axis pump/motor includes a back plate positioned within a casing, and a check valve positioned in the back-plate, the check valve configured to control passage of fluid from within the...
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7302883 |
Hybrid nutating pump
A nutating pump has a cross-type universal joint connecting a nutating member to a pump housing, ball joints connecting the nutating member to piston rods, and the piston rods fixed to piston heads...
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7299740 |
Reciprocating axial displacement device
A reciprocating axial displacement mechanism is disclosed generally comprising a housing, a rotating device, a displacement device having first and second undulating surfaces disposed in the...
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7299738 |
Axial piston machine having a device for the electrically proportional adjustment of the volumetric displacement
An axial piston machine having a swashplate or an oblique axis which can be adjusted by means of servopistons and has a valve segment and an adjustment unit for the electrically proportional...
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7275474 |
Optical position sensing and method
In a variable displacement type hydraulic pump/motor assembly including at least one internally movable component, such as a yoke, a swashplate, and the means for moving the swashplate, the...
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7267041 |
Reciprocating piston compressor
The reciprocating piston compressor has several parallel cylinder-piston units ( 7, 8 ) in a common compressor casing ( 3 ) and whose pistons ( 8 ) are moved by a rotary wobble plate ( 11 ) by...
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7240488 |
Cruise control and neutral return mechanism for a hydrostatic transmission
A control arm is coupled to a control shaft of a hydraulic pump. A friction shaft extends parallel to the control shaft and is slidably moveable within an arcuate-shaped hole in the control arm. A...
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7234385 |
Return to neutral mechanism for hydraulic pump
A speed adjusting mechanism that includes a return to neutral feature for returning a control member of a pump to neutral after the control member has been moved to a forward or reverse position....
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7179063 |
Reciprocating-piston machine with a sliding sleeve
In a reciprocating-piston machine, in particular a refrigerant compressor for a motor vehicle air-conditioning system, including a machine shaft rotatably supported in a housing, a plurality of...
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7178449 |
Hydraulic device driving a rotating receiver
Hydraulic device driving a rotating receiver such as a shaft ( 1 ) includes at least one hydraulic motor having axial pistons ( 7 ) bearing against a fixed swash-plate ( 9 ) via shoes ( 10 ), the...
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7174827 |
Mounting clip for thrust bearing
A compressor assembly comprising a housing having a shaft bore therein, a main shaft positioned for rotation within the shaft bore, at least one roller thrust bearing and a thurst surface bearing...
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7171889 |
Swash plate tilting angle detector for a swash plate plunger type hydraulic unit
A swash plate plunger type hydraulic motor is constituted such that plungers are slidably disposed in respective plunger holes of a motor cylinder, and a motor rolling member having a motor swash...
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7162948 |
Variable stroke assembly balancing
An assembly includes a piston and a transition arm coupled to the piston. The position of the transition arm is adjustable to vary a stroke of the piston. A balance member is adjustable relative to...
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7153105 |
Compressor with swash plate housing inlet port
A compressor is disclosed generally comprising a cylinder block at least partially enclosing a compression chamber, a swash plate housing mounted adjacent the cylinder block, the swash plate...
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7127890 |
Axle driving system
An axle driving system which houses in a housing thereof a hydrostatic transmission, axles, and a driving gear train for connecting output means of the hydraulic transmission and axles, so as to...
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7124677 |
Swashplate assembly
A rotary hydraulic machine has a swashplate adjustable by an actuator. The swashplate has a part cylindrical bearing surface supported by a complimentary bearing surface in the housing and a fluid...
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7121190 |
Fluid machine for gas compression refrigerating system
A fluid machine for a gas compression refrigerating system comprises a first and a second working for performing a pump mode operation, in which working fluid of low pressure is sucked into and...
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7121188 |
Axial piston machine having a device for the electrically proportional adjustment of its volumetric displacement
An axial piston machine having a swash plate or oblique axis which can be adjusted by means of servopistons and has a valve segment and an adjustment unit for the electrically proportional...
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7121092 |
Bypass mechanism for a hydraulic drive device
A pair of zero-turn, hydrostatic transaxles (HZTs) that may be joined to form an integrated, zero-turn, hydrostatic transaxle. Each of the hydrostatic transaxles are further comprised of a casing...
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7114434 |
Reciprocating compressor
A reciprocating compressor, comprising a cylinder block ( 1 ) having a cylinder bore ( 12 ) formed therein, a rear head ( 3 ) fixed to the cylinder block through a valve plate ( 2 ) and having a...
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7114432 |
Torque limiting device for hydraulic piston pump
A torque control for a hydrostatic piston pump that provides for a servo piston rod that is connected to the swashplate of the pump and connected to a servo piston within a first cavity that...
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7111545 |
Return to neutral device for a hydraulic apparatus
In a hydrostatic device using an axial piston pump, a return plate is mounted so that it contacts the movable swash plate of the hydrostatic transmission. The plate is biased by a spring-type...
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7107892 |
Housing with multiple case drain ports for hydrostatic transmission pumps
In a variable displacement hydraulic pump having a housing with a multiplicity of interconnected surfaces, including opposed end surfaces and intermediate side surfaces, the improvement comprising...
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7082762 |
Pump
A pump having a symmetric end cap is disclosed. The end cap is attachable in a first position or a second position wherein the second position is rotated relative to the housing. A trunnion arm...
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7082761 |
Hydraulic continuously variable transmission
A hydraulic continuously variable transmission includes a swash plate plunger pump, a swash plate plunger motor, and a closed hydraulic circuit for connecting them to each other, wherein a motor...
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7076948 |
Hydraulic continuously variable transmission
To reduce the projection of a swash plate servo mechanism in the radial direction, and to make a hydraulic continuously variable transmission compact, a swash plate plunger pump includes a pump...
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7073427 |
Hydrostatic machine with compensated sleeves
A hydrostatic machine with a cylinder block ( 6 ), within which sleeve holes ( 28 b ) are arranged, in which sleeves ( 28 ) sit, surrounding piston bores ( 28 a ) in which pistons ( 29 ) are...
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7063003 |
Swash plate-type compressor
A swash plate-type compressor included a rotatable swash plate and a piston. The piston is connected to the swash plate via at least one shoe and reciprocates in company with each rotation of the...
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7052246 |
Axial piston micropump
An axial piston micropump is disclosed, having a cylinder drum, in which several cylinders are provided a swash plate, with respect to which the cylinder drum is rotatable. It is desirable for such...
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7051641 |
Adjustment for steering levers for hydrostatic drive
An adjustable arm assembly is drivably coupled to a control shaft and is moved by a link that has a centered position. The arm has two portions that are releasably clamped together. A first arm...
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7047867 |
Oscillating device for adjusting the displacement of a fluid pump
A device for adjusting the displacement of a fluid pump includes a swashplate supported for pivotal movement about a first axis, and an engine having first and second cylinders. A first piston is...
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7040216 |
Hydraulic motor
A hydraulic motor is equipped with an output shaft ( 2 ), a cylinder ( 4 ) arranged around the output shaft and receiving a plurality of pistons ( 6 ) expanding with the fluid pressure, a diagonal...
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7021904 |
Swash plate type hydraulic pump or motor
A swash plate type hydraulic pump or motor comprises first and second swash plates which move reciprocally while opposing first and second pistons, so as to expand and contract a volume chamber...
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7021193 |
Variable displacement compressor hinge mechanism
A hinge mechanism for a variable displacement swash plate type compressor including an arm extending from a rotor and a pair of arms extending from a swash plate hub, wherein a pair of shoes are...
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7021053 |
Operation mechanism of a variable displacement hydraulic pump
An operation mechanism for a variable displacement hydraulic pump. The hydraulic pump is disposed in a housing filled with fluid. A capacity regulating member is provided on the hydraulic pump in...
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7014428 |
Controls for variable displacement compressor
A control system for a variable displacement compressor uses a mechanical valve to minimize energy consumption in an air conditioning system. The control system can also provide instantaneous...
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7007589 |
Piston assembly
A hydraulic pump includes a housing, at least two pistons mounted to the housing to rotate relative to the housing, and a transition arm coupled to each of the pistons to rotate therewith. The...
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7004729 |
Compressor with pot-shaped housing and housing sealing cover
A compressor, in particular for air conditioning systems in motor vehicles, having a housing, a housing sealing cover, a drive shaft with bearings and a drive device for pistons that are displaced...
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