Match Document Document Title
6851937 Swash plate type compressor having improved refrigerant discharge structure  
A swash plate type compressor includes a front head portion having a suction chamber and a discharge chamber sectioned by a partition wall formed on an inner surface of the front head portion, and...
6846165 Hydrostatic machine  
The invention relates to a hydrostatic machine (1) comprising at least one first hydrostatic unit (E1) and one second hydrostatic unit (E2), each hydrostatic unit (E1, E2) comprising respective...
6840745 Diaphragm pump including a wobble plate  
A diaphragm pump comprises a two part casing formed of a front cover (10) and a back cover (12). A diaphragm plate (14) extends across the covers (10,12) and is secured therebetween when the...
6837691 Refrigeration suction mechanism for a piston type compressor and a piston type compressor  
A refrigeration suction mechanism used in a piston type compressor. The compressor comprises a rotary shaft, a plurality of pistons, a compression chamber and a rotary valve. The pistons are...
6837695 Inlet port for a reciprocating compressor  
A reciprocating refrigerant compressor includes a cylinder block having a cylinder bore, and a compression chamber defined within the cylinder bore. A cylinder head has a low-pressure chamber for...
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...
6817840 Shaft seal, in particular for an axial piston displacement compressor  
The invention relates to a subassembly, consisting of a drive shaft (12), a housing (10) with a through-bore (19), through which the drive shaft projects out of the housing and an axial mechanical...
6808086 Paste ejection apparatus  
In a seal mechanism which constitutes a port switching portion in a pump mechanism of a paste ejection apparatus that ejects paste, and which prevents leakage of the paste from a seal portion...
6799953 Port plate for an axial piston pump  
A pump includes a stationary pump housing having a housing chamber, a rotating pump shaft having a central longitudinal axis and extending through a proximal end of the pump housing into the...
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 piston bores...
6793464 Motor-driven compressor cooled by refrigerant gas  
A compressor includes a housing that has cylinder bores. A swash plate chamber communicates to the cylinder bores and a motor chamber partitioned from the swash plate chamber. A motor is disposed...
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...
6786703 Variable capacity air conditioning compressor with improved crankcase oil retention  
An automotive air conditioning compressor with a capacity control valve improves oil retention in the crankcase with a crankcase to suction chamber passage that is formed through the central...
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...
6773226 Rotary work exchanger and method  
An energy exchanger device can be used for exchanging pressure energy from one fluid to another, or may act as a hydraulic compressor or fluid driven pump. A preferred device uses a jet nozzle to...
6767193 Piston type compressor  
Between a cylinder block and a housing, there is disposed a valve base plate. The valve base plate is formed with mutually isolated first and second intake openings for fluidly communicating each...
6736048 Hydrostatic axial piston machine  
A hydrostatic axial piston machine has a drum-like cylinder block which is supported in a manner fixed against rotation on a driving or output shaft and is provided concentrically and parallel to...
6733248 Fluid pumping apparatus  
A pump has wobble pistons rigidly connected to arms of a nutating plate that is mounted on a bearing eccentrically mounted to a drive shaft by a counterweight. The piston assembly is nearly...
6722866 Pump system for delivering cryogenic liquids  
A pump system for delivering cryogenic liquids is proposed that is suitable, for example, for refueling motor vehicles with H2. It consists of a container for receiving the cryogenic liquid, in...
6719537 Compressor and pulley for compressor  
A compressor has a pulley for transmitting torque from an external drive source to a rotary shaft to drive a compression mechanism. The pulley has a pulley body. The compressor has a mass body...
6705843 NVH and gas pulsation reduction in AC compressor  
A muffler is integrally incorporated into the rear housing of a compressor. In this way, the muffler reduces the overall size, weight and cost of the compressor. The fluid flow is directed through...
6705204 Swash plate-type  
A swash plate-type compressor includes a cylinder block, a drive shaft, a swash plate, a plurality of pistons, and a pair of shoes. The cylinder block has a plurality of cylinder bores formed...
6699017 Restriction structure in variable displacement compressor  
A seal is provided between the housing assembly of a variable displacement compressor and a rotary shaft to seal inside the housing assembly. The seal is retained in a retaining chamber, which is...
6688212 Swash plate-type compressors  
A swash plate-type compressor includes a cylinder block having a plurality of cylinder bores formed therethrough, a drive shaft rotatably supported by the cylinder block, and a swash plate...
6688858 Pump housing mounting flange with tangentially positioned mounting slots  
A pump housing assembly includes a housing, a hub portion, and a flange. The housing has an end cowling defining a transition from a central portion of the housing to a transverse end portion. The...
6682315 Axial piston pump barrel with a cast high pressure collection cavity  
In an axial piston pump, a plurality of reciprocating pistons are at least partially positioned within a barrel. The barrel includes a ring shaped high pressure collection cavity that is...
6675607 Swash plate type compressor  
An oil separator is provided on a bleeding channel inside the shaft 16. By integral rotation of the shaft 16 and a rotary valve, oil contained in a refrigerant gas is centrifuged via the oil...
6672285 Suction controlled pump for HEUI systems  
A HEUI system uses a fixed displacement, radial piston pump to provide a generally constant pump flow of high pressure hydraulic fluid over the operating speed range of the radial piston pump to...
6669450 Rotary slant shaft type gas compressor with multi-stepped exhaust system  
A rotary slant shaft type gas compressor having a multi-stepped exhaust system is provided, which includes: a driving shaft fixed with a cylinder head formed with gas holes; a gas guide member for...
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....
6663355 Variable displacement compressor  
A variable displacement compressor includes a housing having a suction chamber. A crank chamber is defined in the housing. A valve plate assembly is located in the housing. A drive shaft is...
6658986 Compressor housing with clamp  
A housing assembly for a refrigerant compressor in an air conditioning system includes a forward housing portion, and a rearward housing portion. The two mate together to contain the internal...
6659742 Directional flow valve structure for reciprocating compressors  
A refrigerant compressor includes a front housing, a cylinder block, a rear housing, and a valve plate positioned between the cylinder block and the rear housing, in which the valve plate has a...
6659734 High-pressure pump with improved sealing  
The invention concerns a pump for pumping a first liquid, called transferred liquid, and comprising a main unit (18) for pumping the transferred liquid actuated by an auxiliary unit (20) pumping a...
6648605 Pump utilizing dissimilar materials to compensate for temperature change  
A pump includes a pump housing that defines an inlet and an outlet. Within the pump housing, there is a barrel that is adjacent to at least one reciprocating piston. A sleeve surrounds the annular...
6648608 High pressure fuel pump  
A main unit pumps the transferred liquid actuated by an auxiliary unit for pumping a working liquid. The auxiliary unit comprises a piston provided with an axial drilling (bore) for circulating...
6644936 Swash plate type refrigerant compressor  
The outer diameter Φd1 of a top face-side end portion 35 of pistons 7 is made slightly smaller than the outer diameter Φd0 of a hollow cylindrical portion 36 of the pistons 7 other than the top...
6644170 Double spline hydraulic pump  
In a hydraulic pump assembly, an annular sleeve member is radially interposed between an outer peripheral surface portion of an input shaft and an inner peripheral surface portion of a cylinder...
6634868 Compressor  
A compressor has a housing and a cylinder block. The housing includes suction and discharge chambers. The cylinder block is fixed to the housing via a valve plate assembly. The valve plate...
6634867 Shuttle piston assembly with dynamic valve  
A portable, high capacity air compressor system for charging air tanks over wide pressure ranges with maximum volumetric efficiency is characterized by employing a shuttle piston assembly in which...
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...
6629822 Internally supercharged axial piston pump  
An axial piston pump that enables fluid entering the pump to be pre-charged without the addition of an auxiliary pumping mechanism or other type of external fluid precharge, comprises a housing...
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....
6626647 Radial piston pump  
The radial piston pump possesses a pump body with a plurality of cylinder borings for the reception of pump pistons which can be driven by a cam. The cylinder borings are closed by valve plugs in...
6609897 Motor-operated compressor  
A single-headed piston (22) is accommodated within each of a plurality of cylinder bores (13) formed on a cylinder block (13). Shoes (23) are disposed between a swash plate (11) and each...
6607364 Piston compressor and method of producing the same  
A piston compressor includes a front housing member and a rear housing member. A suction chamber and a discharge chamber are defined either in the front housing member or in the rear housing...
6592339 Small pump device and sphygmomanometer using the pump device  
Disclosed is a small-sized pump device that is constructed of a motor constituting the small-sized pump device, a case member mounted on an output-shaft surface of the motor, a rotary...
6592336 Hydraulic pump with a built-in electric motor  
A hydraulic pump with a built-in electric motor wherein an electric motor and a pump unit are arranged in tandem fashion and accommodated within a common housing. In this pump, the housing is in...
6592337 Shaft seal of a lip type with fluid guiding components having the same  
A shaft seal seals a rotary shaft surface to prevent fluid from moving between a high-pressure area and a low-pressure area. The shaft seal has a lip type ring fitted on the side of the...
6589022 Compressor having a seal cooling structure in which all refrigerant fluid supplied to the compressor is used to cool compressor shaft seals  
The compressor has a cooling structure to effectively cool a shaft seal device interposed between a housing of the compressor and a rotary shaft. The front housing has a through-hole through which...