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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...
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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...
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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...
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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...
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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...
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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 positioned...
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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...
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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...
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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...
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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...
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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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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...
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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 )...
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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...
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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...
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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...
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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...
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6644936 |
Swash plate type refrigerant compressor
The outer diameter Φd 1 of a top face-side end portion 35 of pistons 7 is made slightly smaller than the outer diameter Φd 0 of a hollow cylindrical portion 36 of the pistons 7 other...
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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...
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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 assembly...
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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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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...
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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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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...
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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...
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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...
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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...
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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...
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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...
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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...
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6582202 |
Compressor and method of lubricating the compressor
In a compressor that is configured to guide the lubricating oil separated from the discharged refrigerant by an oil separator to the radial bearing supporting the drive shaft, through an oil supply...
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6579071 |
Structure for suppressing pulsation in compressor
An introduction passage is formed in a rear housing. The introduction passage extends from a wall of the rear housing across a discharge chamber to a suction chamber. The introduction passage has a...
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6579072 |
Swash plate pump with low stress housing
A rotary pump has a rotor with a first end, a second end opposite the first end, a central bore and a plurality of cylinder bores arranged about the central bore and extending completely through...
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6575708 |
Compressor head with improved oil retention
A head assembly for use in a compressor having a first compression chamber for compressing a fluid includes a manifold housing defining an intake port, an exhaust port and a control valve port and...
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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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6572344 |
Compact pump or motor with internal swash plate
A fluid translating device is provided that includes a first member having fluid inlet/outlet ports and a second member having a plurality of pistons disposed therein secured to a stationary...
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6572343 |
Cylinder block for a piston-type compressor with deformation absorbing gaps
The deformation of cylinder bores in a cylinder block is prevented. The cylinder block 19 is inserted into a front housing 11 . The cylinder block 19 is fixed to the front housing 11 by...
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6568311 |
Hydraulic motor with shift transmission
A hydraulic motor ( 1 ), has an output shaft ( 3 ), a block cylinder ( 6 ), and high-pressure pistons ( 7 ) guided therein, and a block cylinder spring ( 9 ) and a valve plate ( 5 ). The block...
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6568916 |
Axial piston pump with outer diameter inlet filling
A variable delivery fixed displacement pump is provided which has a rotating drive plate with a fixed angle. The drive plate has a fill passage extending between its radial outer surface and its...
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6568918 |
Lubrication coating for the sliding portion of a swashplate compressor
A swash plate slides on a plurality of shoes. A lubrication coating is applied to the swash plate. The lubrication coating includes a non-graphite solid lubricant, a transfer adjusting agent, and a...
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6568913 |
Lubrication pump for a swash plate type compressor
A variable displacement swash plate type compressor which incorporates a lubricant pump coupled to one end of the drive shaft of the compressor, wherein the lubricant pump provides positive...
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6568917 |
Reciprocating compressor and method of lubricating the reciprocating compressor
In a reciprocating compressor, an adequate lubricating effect is ensured for a sliding surface between a piston and a cylinder bore, and the leakage of a refrigerant for discharge is prevented. ...
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6568921 |
Refrigerant compressor
To further optimize a refrigerant compressor, comprising a compressor housing, at least one cylinder chamber arranged in the compressor housing, a piston oscillatingly movable in the cylinder...
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6565329 |
Electric type swash plate compressor
The object of the present invention is to offer an electric type swash plate compressor which is compact and reduced in weight and lightened, and which can efficiently cool down a motor chamber and...
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6561771 |
Axial piston pump with center inlet fill
An axial piston pump with center inlet fill utilizes a hydrostatic thrust bearing and a hydrodynamic journal bearing to support a rotating wobble type drive plate connected to a drive shaft. The...
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6554581 |
Air conditioning compressor
A compressor for the air conditioning system of an automobile, having a housing and a compressor unit arranged in the housing for taking in and compressing a refrigerant. The refrigerant flows from...
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6554582 |
High pressure pump with improved hub
A pump has a main unit ( 18 ) for pumping a transferred liquid which is actuated by an secondary unit ( 20 ) which pumps a working liquid. The secondary unit ( 20 ) has a hub ( 64 ) which is...
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6547533 |
Axial movement restriction means for swash plate compressor and compressor assembly method
A piston type compressor has a housing, a crank chamber and a drive shaft supported by the housing. A front restriction and a rear restriction are located in the housing. The front and rear...
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6544006 |
Piston type compressor
A gasket 36 is interposed between an end face 341 of a front housing 11 and an end face 351 of a rear housing 12. A coned disc spring 37 is interposed between an end face 192 of a...
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6543424 |
Fuel pump, in-cylinder direct injection type internal combustion engine using the same and surface treatment method
In a fuel pump pressurizing fuel and supplying the fuel to a fuel injection valve of a vehicle engine, a hardened layer of at least one selected from a nitride layer, a carburated and quenched...
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