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7367783 |
Rotating fluid machine
A rotary valve for switching supply passages, and discharge passages of high-temperature and high-pressure steam for a rotor rotatably supported at a casing is constructed by making a fixed side...
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7364409 |
Piston assembly for rotary hydraulic machines
A piston assembly for a hydraulic machine is formed with a part spherical cavity in the piston to receive a spherical bearing of a slipper assembly. The spherical bearing is secured in the cavity...
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7364408 |
Crank case shut off valve
The invention provides a compressor with a shut off valve disposed between the crank case and the suction cavity. The valve is moveable between an open and closed position in response to the...
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7320576 |
Clutchless variable displacement refrigerant compressor with mechanism for reducing displacement work at increased driven speed during non-operation of refrigerating system including the compressor
In a variable displacement swash plate type refrigerant compressor ( 10 ), a stopper ( 28 ) is provided for setting an initial angle of the inclination angle of a swash plate ( 23 ) when a drive...
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7232293 |
Manual hydraulic pump
A manual hydraulic pump includes a cylinder block 10 and an end block 8 . The rear end of the cylinder block 10 and the end block 8 defines an end space 21 between them. The cylinder block...
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7207784 |
Hybrid compressor and control device
When a hybrid compressor starts being driven by an electric motor, the electric current of a capacity control valve is applied at an initial control electric current SS that is greater than a...
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7172394 |
Saddle bearing liner for axial piston pump
A saddle bearing liner ( 30 ) for a variable displacement axial piston pump ( 10 ) includes two axially-spaced apart bearing surfaces ( 62, 64 ) with an offset central section ( 54 ) integrally...
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7172393 |
Multi-cylinder compressors and methods for designing such compressors
A multi-cylinder compressor includes a valve plate having a plurality of cylinder suction ports formed therethrough, and a plurality of cylinder bores centered on an arc having a radius (R). The...
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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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7144227 |
Reciprocating-piston machine with a driver
In a reciprocating-piston machine, in particular a refrigerant compressor for a motor vehicle air-conditioning system, comprising a machine shaft rotatably supported in a housing with a plurality...
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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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7048515 |
Hydraulic drive system and method using a fuel injection control unit
A fuel injection control unit, including an electronic governor and a controller for an engine performs control in a governor region based on an isochronous characteristic. A working machine...
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7033149 |
Medium pump adapted for ease of disassembly and assembly
A medium pump for a motor includes a pump case with a pump cylinder and a pump piston positioned displacaebly in the pump cylinder in the direction of a pump axle. The pump piston rotates about 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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6991435 |
Variable displacement compressors which estimate an inclination angle of a plate of the compressor
A variable displacement compressor includes a plate having a variable inclination angle, and a piston engaging the plate. The piston reciprocates within a bore of the compressor in accordance with...
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6957950 |
Compressor with compact screw connected housing and adjustable mounting means
According to the invention, a compressor having a threaded screw connection portion formed directly on a fitting portion of the housing is provided. Since no through bolt or the like for connecting...
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6957604 |
Axial-piston drive system with a continuously adjustable piston stroke
The invention relates to an axial piston drive with a continuously adjustable piston stroke, which comprises a drive shaft ( 10, 12 ) on which a swash plate ( 16 ) is supported in a crank chamber (...
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6926501 |
Two-piece swashplate pump housing
A housing for a hydraulic pump is provided. The pump has an input shaft connected to a swashplate, a plurality of pistons, a plurality of check valves, and a metering device having an actuator. The...
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6913447 |
Metering pump with varying piston cylinders, and with independently adjustable piston strokes
A metering pump includes an actuating mechanism, and a plurality of piston cylinders coupled to the actuating mechanism. A first of the cylinders has a working volume that differs from a second of...
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6866484 |
Multi-cylinder high-pressure plunger pump
The invention relates to a multi-cylinder high-pressure plunger pump with a plurality of plungers and a drive unit therefor which is arranged in a housing, the plungers being arranged equidistantly...
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6863505 |
Wind driven high pressure water pump
This invention relates to a wind mill which is designed to convert rotational energy to mechanical energy to drive one or more pistons to raise a liquid such as water to an elevated location if...
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6863503 |
Variable capacity compressor
A variable capacity compressor like a swash plate type where a pressurized fluid is fed to a control pressure chamber such as a swash plate chamber to apply a backpressure to a piston etc. and the...
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6848888 |
Sensor for a variable displacement pump
A sensor for a variable displacement pump is provided. The pump has a housing containing a swashplate that is adapted to rotate about an axis. The sensor includes a magnet connected to the...
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6846165 |
Hydrostatic machine
The invention relates to a hydrostatic machine ( 1 ) comprising at least one first hydrostatic unit (E 1 ) and one second hydrostatic unit (E 2 ), each hydrostatic unit (E 1 , E 2 ) comprising...
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6823768 |
Nitrided surface layer on a swash plate boss
A swash plate for a swash plate-type, variable displacement compressor, such that the compressor is driven by a drive shaft having a shaft axis. The swash plate includes a boss that is penetrated...
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6799952 |
Pneumatically operated compressor capacity control valve with discharge pressure sensor
A pneumatically-operated control valve selectively opens and closes a passage between discharge and crankcase chambers of a variable capacity refrigerant compressor for purposes of controlling the...
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6796774 |
Axial piston engine
An axial piston engine ( 1 ), including a housing ( 2 ) in whose inner compartment ( 4 ) a cylinder drum ( 17 ) and a swash plate ( 26 ) located axially adjacent thereto are situated. Several...
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6793463 |
Tandem pump and interface for same
A method of assembling a tandem pump comprising first and second pumps connected in tandem by an interface. Each pump has a housing and an end cap containing hydraulic porting. The interface...
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6786704 |
Compressor with single shaft support
A piston type compressor having a drive plate (swash plate), wherein sliding friction between the drive plate and shoes is reduced and the compressor is made smaller by slidably attaching the shoes...
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6786202 |
Hydraulic pump circuit
A hydraulic pump is provided that includes a housing having a fluid inlet and a fluid outlet. A pumping element is operable to increase the pressure of fluid received through the fluid inlet and to...
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6729853 |
Displacement control device for variable displacement compressor
A first bleed passage and a second bleed passage each connect a crank chamber of a compressor with a suction chamber of the compressor. A first supply passage and a second supply passage each...
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6715997 |
Housing for a rotary hydraulic unit with a servo piston
A variable displacement hydraulic power unit has a housing and a rotating piston block with a rotatable axis and a servo piston bore having a reciprocal piston therein with the bore extending in a...
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6705841 |
Variable displacement compressor with stepped shaft
A variable displacement piston compressor comprising a housing and a shaft supported within the housing for rotational movement about an axis. The shaft includes a stepped down portion defining a...
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6705181 |
Torque transmission apparatus
A torque transmission apparatus absorbs torque fluctuations (vibrations) while limiting the size of the outside dimensions of a pulley. Elastomeric dampers and pendulum type vibration-absorbing...
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6663354 |
Hydrostatic axial piston machine with a control port, a cradle supported swashplate and a swashplate actuating piston
A hydrostatic axial piston machine has a cylinder block with bores holding reciprocating pistons, a swashplate supporting the pistons, and control cams to supply the bores with hydraulic fluid. The...
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6659733 |
Variable displacement compressor
A variable displacement compressor includes a cylinder block and a valve plate connected to the cylinder block. The cylinder block has cylinder bores and a central supporting hole. A piston is...
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6640687 |
Control system for hydrostatic pump
A non-feedback proportional system is provided to achieve desired operating characteristics which will allow the control of a hydrostatic transmission to closely approximate the control performance...
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6632074 |
Pressure setting means for a multistage type piston compressor
A multistage piston compressor includes a case and a suction chamber and a discharge chamber provided in the case. A rotary shaft is supported in the case. A valve plate provided in the case...
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6629823 |
Compressors
Compressor are taught that may include a suction port to draw refrigerant and a discharge port to discharge compressed refrigerant. A driving shaft is disposed within a compressor driving chamber....
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6623247 |
Method and apparatus for controlling a variable displacement hydraulic pump
A method and apparatus for controlling a variable displacement hydraulic pump having a swashplate pivotally attached to the pump. The method and apparatus includes determining a desired swashplate...
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6572342 |
Variable capacity compressor and method of manufacturing
An easy method for manufacturing a swash plate and a variable capacity swash plate compressor adopting the swash plate are provided. The method for manufacturing a swash plate or a hub having a...
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6547531 |
Variable-displacement axial piston pump
A conventional variable-displacement, axial piston-type hydraulic fluid pump having a pump housing is provided with co-operating pump rotational speed, thrust plate position, and working pressure...
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6540488 |
Slant plate-type variable displacement compressors with capacity control mechanisms
A slant plate-type variable displacement compressor includes a housing enclosing a crank chamber, a suction chamber, and a discharge chamber. The housing includes a cylinder block, and cylinder...
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6517322 |
Hydrostatic variable displacement pump having a compact housing to facilitate swash plate installation
A hydrostatic variable displacement pump of swash plate construction has a cylinder block 2 , in a housing 1 , with displacement pistons 3 guided therein, a swash plate 4 and at least a first...
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6514048 |
External control variable displacement compressor
An external control variable displacement compressor varies its displacement based on the pressure in a control chamber. The compressor has a valve chamber defined in a housing. The valve chamber...
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6487858 |
Method and apparatus for diminishing the consumption of fuel and converting reciprocal piston motion into rotary motion
An apparatus for converting between reciprocal piston motion and rotary shaft motion. A unique H-shaped piston rod configuration and corresponding cylinder assembly for improving the efficiency of...
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6481976 |
Control valve and variable capacity type compressor having control valve
A variable capacity type compressor has a tiltable swash plate and pistons. A control valve is arranged to change the pressure in the crank chamber, to vary the capacity of the compressor by...
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6474957 |
Piston type compressor having arcuately shaped fluid port
A suction port as a fluid port of a piston type compressor is contoured with reference to a middle line passing through a middle point of a maximum length of the suction port in the longitudinal...
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6474183 |
Variable-displacement inclined plate compressor
A variable-displacement inclined plate compressor includes a drive shaft, a rotor provided on the drive shaft, and an inclined plate provided around the drive shaft and rotated synchronously with...
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6471490 |
Piston type compressor having suction structure with arcuately shaped suction valve
A suction port of a piston type compressor is formed in the shape similar to a portion of a sector with an apex portion of the sector removed. A distal end portion of a suction valve which can open...
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