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7611337 |
Hydraulic pump
Pump, comprising a casing that is generally cup-shaped intended to be fixed to a driving motor ( 3 ), and containing a drive shaft ( 6 ) suitable for being coupled with said motor, and having a...
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7607900 |
Multi-cylinder reciprocating compressor
A multi-cylinder reciprocating compressor includes a cylinder block provided with a plurality of pistons each for performing a working fluid suction stroke and a working fluid compression/discharge...
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7607897 |
Reciprocating compressor
A reciprocating compressor includes a cylinder block having formed therein a plurality of cylinders, pistons that make reciprocal movement inside the cylinders, a first cylinder head fixed to one...
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7594802 |
Large angle sliding valve plate pump/motor
A pump/motor includes a back plate having first and second fluid ports configured to be differentially pressurized, first and second reaction plates rigidly coupled to the back plate, and a valve...
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7547198 |
Double-headed piston type compressor
A double-headed piston type compressor forms a first compression chamber and a second compression chamber for compressing gas. The compressor has rotary shaft having an inner chamber that...
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7540720 |
Heat-insulating mechanism for compressor
A heat-insulating mechanism in a compressor which introduces refrigerant gas from a suction pressure region to a compression chamber and discharges the refrigerant gas from the compression chamber...
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7527595 |
Pump provided with exhaust valve device and hemodynamometer incorporating the same
A diaphragm is provided in a pump case so as to define a pump chamber communicated with an external member having an air chamber. The actuator is provided in the pump chamber. An exhaust valve is...
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7520210 |
Oil separator for a fluid displacement apparatus
An oil separator for a compressor is shown, wherein an oil separating efficiency is maximized and a material cost, a weight, and an assembly time are minimized.
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7500424 |
Hydraulic machine having pressure equalization
A hydraulic machine includes a valve plate, with first and second fluid ports in a surface thereof. A cylinder barrel is rotatably coupled to the valve plate. A plurality of cylinders is formed in...
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7494328 |
NVH and gas pulsation reduction in AC compressor
A rear housing for a compressor reduces NVH without increasing the overall size of the compressor or inducing flow loss. Generally, the compressor includes a cylinder block receiving lower pressure...
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7470116 |
Axial piston machine
What is disclosed is an axial-piston machine having at least one swash plate and one cylinder drum supported thereon, which includes a multiplicity of cylinder sleeves. To the cylinder sleeves a...
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7458785 |
Compressor with lubrication structure
A supply passage is formed in a rotary shaft along the axis thereof. An expansion passage is formed in the rotary shaft in such a way as to be led to the supply passage. A pair of fluid passages...
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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...
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7413421 |
Multi-cylinder reciprocating compressor
A multi-cylinder reciprocating compressor has a plurality of compression chambers and a plurality of discharge valve devices associated with the respective compression chambers. Each discharge...
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7402027 |
Rotating group of a hydraulic machine
A hydraulic machine-has a rotating group located within a housing and a port plate to control flow from the barrel of the rotating group to inlet and outlet ports. The port plate is sealed against...
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7399169 |
Compressor
The invention provides a compressor that can reduce occurrence of vibration and noise due to self-induced vibration of an suction valve at the time of a low flow rate surely with an inexpensive...
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7390178 |
Compressor
A compressor comprises a plurality of pairs of a cylinder bore and a piston moving reciprocally in the cylinder bore, a valve plate provided with a plurality of outlet holes for leading pressurized...
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7387501 |
Control valve for variable displacement compressor
To provide a control valve which is capable of maintaining the minimum operation of a variable displacement compressor, by causing a valve section thereof to be fully opened, irrespective of the...
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7384248 |
Fuel metering pump
A fuel metering pump provides a compact and reliable fuel delivery system meeting the stringent contamination resistance, accuracy, pressure and flow requirements of jet engine combustion. The...
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7380490 |
Housing for rotary hydraulic machines
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...
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7377754 |
Compressor
A compressor includes a swash plate, and a shoe connected to an outer periphery of the swash plate. A surface of the swash plate slides upon a flat surface of the shoe. A sliding film is applied to...
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7371055 |
Tandem pump unit
The present invention provides a tandem pump unit that includes: a first hydraulic pump and a second hydraulic pump respectively having a first pump shaft and a second pump shaft respectively...
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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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7328647 |
Hydraulic device
The invention concerns a hydraulic device with a housing and a rotor which can rotate in the housing and has fixedly mounted pistons. Around the piston there are drum sleeves which each, together...
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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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7300260 |
Special fluids for use in a hydrostatic transmission
A positive displacement piston unit is provided that utilizes a magnetorheological (MR) or electrorheological (ER) fluid as the transmission fluid. Each cylinder of the invention has an intake port...
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7281905 |
Piston type compressor
In a piston type compressor, a housing includes a cylinder head which defines a discharge chamber and a cooling chamber. The cooling chamber located adjacent to the discharge chamber surrounds the...
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7281519 |
Set of piston type fuel pumps for internal combustion engines with direct fuel injection
A plurality of piston pumps form a set of piston pumps, each including one drive region and at least one pumping region. The a set of piston pumps includes at least two piston pumps of different...
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7273356 |
Control valve device for variable capacity type swash plate compressor
There is disclosed a control valve device for a variable capacity type swash plate compressor for use in an air conditioning system. The device comprises an introducing passage for connecting a...
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7258531 |
Axial piston compressor
A compressor, in particular an axial piston compressor having an axial piston drive mechanism for the intake and compression of a coolant, has a drive shaft for the drive mechanism with radial...
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7241116 |
Method of adjusting rotary machine
A method of adjusting a rotary machine includes the steps of press fitting an adjustable member to one of a housing and a rotary body where the adjustable member is arranged to a reference position...
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7232294 |
Compressor having a discharge valve mechanism including a valve retainer having a specially-designed curved surface
In a compressor having a discharge valve mechanism, a valve retainer has a curved surface which is faced to and spaced from a movable portion of a flexible plate-like discharge valve and adapted to...
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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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7229256 |
Dual pump transmission
A dual pump apparatus having two pumps mounted in a housing, where the housing comprises two elements mounted on opposite sides of a hydraulic mounting member or center section. The pumps are...
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7214315 |
Pressure exchange apparatus with integral pump
A pressure exchange device is provided that utilizes an integral high pressure boost pump that is in fluid communication with a pressure exchange unit. An optional low pressure boost pump unit may...
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7207785 |
Vane pump wear sensor for predicted failure mode
A vane pump is disclosed for use with gas turbine engines that is adapted and configured to provide a failure mode similar to that of a traditional gear pump. The vane pump includes a pump housing,...
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7201566 |
Reciprocating-piston machine with a joint arrangement
In a reciprocating-piston machine, in particular a refrigerant compressor for a motor vehicle air-conditioning system, including a machine shaft, a plurality of pistons are arranged, at the same...
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7195464 |
Hydraulic axial piston pump
A hydraulic axial piston pump comprising a cylinder block closed at sides by a head and by a containment casing for piston actuating a plate, an electric motor coupled to the plate, reversible...
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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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7175396 |
Compressor
A compressor that inhales refrigerant gas from an external refrigerant circuit, compresses the inhaled refrigerant gas and discharges the compressed refrigerant gas, comprising a cylinder block...
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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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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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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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7150603 |
Compressor
The present invention relates to a compressor for sucking, compressing and discharging a refrigerant gas from the external refrigerant circuit. The compressor includes: a suction muffler chamber...
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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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7131822 |
Swash plate compressors with non-circular pistons and cylinders
A swash plate compressor comprises a swash plate located for rotation in a housing and a compression unit that forms a part of the housing. The compression unit has cylinder bores that guide...
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7121812 |
High pressure pump having replaceable plunger/valve cartridges
A high pressure fluid jetting system generally includes a fluid cylinder pump, a drive assembly, a pressurized liquid supply and an applicator gun. The drive assembly includes a diesel engine or...
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7118350 |
Radial piston pump
The invention relates to a radial piston pump unit for a high pressure injection system with a pump housing in which a driveshaft with an eccentric section is mounted. A reciprocating ring sits on...
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