Match Document Document Title
9010138 Variable displacement compressor  
A variable displacement compressor adjusts the pressure in a control pressure chamber and controls the displacement in accordance with the adjusted pressure. Refrigerant is supplied via a supply...
8991300 Variable displacement swash plate type compressor  
The present invention provides a variable displacement swash plate type compressor that reduces wear of cylinder bores and the amount of blow-by gas. Each piston of the compressor has a piston...
8944780 Pumping devices, systems including multiple pistons and methods for use with medical fluids  
A system for delivery of medical fluid to a patient which includes a pump system and a drive system. The pump system has at least three chambers, where each chamber includes an inlet for fluid...
8899943 Double-headed piston type swash plate compressor  
A double-headed piston type swash plate compressor is provided with a front housing including a suction chamber, a rear housing, a cylinder block, a rotation shaft, and double-headed pistons. The...
8894383 Reciprocation compressor  
[Object of the Invention] An object of the present invention is to provide a reciprocation compressor comprising an extraction passage connecting a crank chamber with an inlet chamber, an aperture...
8882474 Variable displacement type compressor with displacement control mechanism  
A variable displacement type compressor has a supply passage for supplying refrigerant gas to a pressure control chamber, a release passage for releasing the refrigerant gas from the pressure...
8845195 Hydraulic machine having a sliding bearing having a bearing element  
A bearing element for a sliding bearing is configured to support a drive shaft of a hydraulic machine. The bearing element is connected to the drive shaft so as to prevent relative rotation and...
8801403 Compressing diaphragm pump having abnormal pressure preventing features for spray use  
A compressing diaphragm pump having abnormal pressure preventing features for spray use has a hollow tubular air discharge assembly having a plunger body and compressed spring as well as an air...
8784080 Diaphragm pump for a seat adjusting device and seat adjusting device  
A diaphragm pump for a seat adjusting device comprises a diaphragm and a valve member which define a pump chamber therebetween. An inlet valve and an outlet valve are formed on the valve member. A...
8777588 Flow-optimized cylinder drum for hydrostatic piston engines  
The invention relates to a cylinder drum (1′) for a hydrostatic piston engine, having at least one kidney-shaped control port/cylinder bore transition (5′, 5″, 5′″) which leads into a cylinder...
8757045 Wobble plate type variable displacement compressor  
A wobble plate type variable displacement compressor uses a constant velocity universal joint mechanism, which comprises an inner ring and an outer ring, balls that are held between guide grooves...
8747077 Reciprocating piston machine  
A reciprocating piston machine includes a drive shaft having a central axis, a driving element rigidly connected to the drive shaft and extending essentially perpendicular to the central axis, a...
8742750 Speed sensor pick-up for fluid device  
A speed pick-up ring includes a main body having a plurality of targets and defining a plurality of notches. Each notch is disposed between adjacent targets. Each notch includes a base wall, a...
8734127 Hydraulic pump-motor and method of preventing pulsation of hydraulic pump-motor  
A pressure regulating restriction for allowing a cylinder bore and a valve plate discharge port to communicate with each other before the cylinder bore communicates with the valve plate discharge...
8727743 Opposing swash plate piston pump/motor  
A first swash plate (30) and a second swash plate (40) are disposed on either side of a cylinder block (4), and a plurality of cylinders (6) are disposed in the cylinder block (4). A first piston...
8727742 Micro compressor  
A compressor is provided. The compressor includes a housing, a valve plate, a cylinder block, piston units, a cam element, a driving shaft and a motor. The valve plate is fixed to one end of the...
8714938 Variable displacement compressor  
The variable displacement compressor has a suction-pressure region, a discharge-pressure region and a crank chamber. The compressor includes a supply passage, a bleed passage and a control valve...
8708667 Fuel pump assembly  
A fuel pump assembly for a fuel injection system comprises a drive shaft, at least two pump heads each of which is axially displaced along the drive shaft, each pump head having a respective...
8696325 Return to neutral mechanism for hydraulic pump  
A hydraulic pump includes a housing (12), a cylinder block (14), a plurality of pistons (16), a swash plate (18), a trunnion arm (22), a first biasing assembly (54), and a second biasing assembly...
8696324 Quintuplex mud pump  
A quintuplex mud pump includes a pair of motors (18), a crankshaft (40) supporting five eccentric lobes (44), and first and second bull gears (30). Each of two pinion shafts (20) are rotationally...
8690554 Diaphragm pump using duckbill and other types of valves  
A diaphragm pump is provided that features a valve housing configured with inlet openings and outlet openings; inlet duckbill check valve assemblies, each configured to be arranged in a respective...
8684703 Reciprocating compressor  
A compressor includes a cylinder block including cylinder bores and pistons within the cylinder bores. A front housing opposes a first cylinder block end face to form a crank chamber accommodating...
8668469 Hydraulic piston pump with reduced restriction barrel passage  
The present disclosure sets forth an axial piston pump with greatly improved throughput. The axial piston pump provides cylinders, antechambers, and fluid flow apertures which are uniquely shaped...
8668470 Offset valve bore for a reciprocating pump  
A fluid end 15 for a multiple reciprocating pump assembly 12 comprises at least three plunger bores 61 or 91, each for receiving a reciprocating plunger 35. Each plunger bore has a plunger bore...
8662865 Offset valve bore in a reciprocating pump  
A fluid end (15) for a multiple reciprocating pump assembly (12) comprises at least three plunger bores (61 or 91) each for receiving a reciprocating plunger (35), each plunger bore having a...
8662864 Offset valve bore in a reciprocating pump  
A fluid end (15) for a multiple reciprocating pump assembly (12) comprises at least three plunger bores (61 or 91) each for receiving a reciprocating plunger (35), each plunger bore having a...
8647075 Control valve for a variable displacement pump  
A fluid device includes a variable swashplate adapted for movement between a first position and a second position. A control piston is adapted to selectively move the variable swashplate between...
8635867 Hydrostatic transmission  
A compact, integrated hydrostatic transmission without reduction gearing wherein the pump and motor are contained within a single housing, and an output shaft extends from the housing inline with...
8608454 Combined pump housing for several rated quantities  
In a swash-plate type hydrostatic piston engine, a drive unit (10) and a swash plate (17) are received by a pot-shaped housing (1b). According to the invention, the pot-shaped housing (1b) is...
8596992 Air supply mechanism for ventricular assist system  
A pump system has a rotatory shaft and a rotatory drive arrangement coupled to the rotatory shaft for applying rotatory energy thereto. First through fourth pump arrangements are coupled to the...
8596994 Compressor  
A compressor includes a compressing mechanism, a discharge chamber, a housing accommodating the compressing mechanism and the discharge chamber, a discharge port communicating with the discharge...
8562309 Piston compressor  
A compressor includes a rotary shaft, a cam, a cylinder block, pistons, a thrust bearing, a rotary valve, and an oil passage. The rotary shaft has an in-shaft passage formed therein. The cam...
8545195 Hydrogen generator with pump  
The invention is a hydrogen generator including a pump for pumping a liquid from a reservoir to a reaction area, where the liquid reacts to produce hydrogen gas, and a fuel cell system including...
8523536 Axial piston pump, and power transmission device with axial piston pump  
An axial piston pump has: a cylinder body that forms therein a cylinder chamber extending in an axial direction of a drive shaft and rotates integrally with a driven shaft; a piston that...
8511216 Hydraulic actuator unit  
A hydraulic actuator unit includes a first electric motor assembly formed by mounting one of a pair of electric motors to one of a pair of electric motor covers, wherein the first electric motor...
8485794 Reciprocating compressor with rotary valve  
According to the present invention, a reciprocating compressor with a rotary valve comprises a cylinder block with plural cylinder bore, a drive shaft which is supported and permitted to rotate in...
8475141 Pump assembly for high pressure cleaners  
A pump assembly 10 for high pressure cleaners having a pump body 12 encasing the free end 14 of a motor shaft provided with a keyed-on wobble plate 16 which moves one or more than one axial...
8469677 Check valve pump with electric bypass valve  
A hydraulic power unit having a power shaft that rotates a cam. The cam actuates a piston assembly that contains a plurality of pistons wherein each piston has a piston body and fluid working...
8459962 Variable displacement swash plate type compressor  
Provided is a variable displacement swash plate type compressor including a cylinder block having a plurality of cylinder bores, a drive shaft rotatably supported by the cylinder block, a lug...
8449267 Pump assembly and fluid metering unit  
Apparatus for a pump assembly and a fluid metering unit. The pump assembly can include a diaphragm with a portion of a body being molded over a portion of each one of a plurality of pistons. The...
8435013 Reciprocating compressor and oxygen concentrator  
A reciprocating compressor includes a motor having a motor shaft, four cylinders provided in perpendicular directions relative to an axial direction of the motor shaft, and four pistons Each...
8419940 Combined axial piston liquid pump and energy recovery pressure exchanger  
A pumping machine, that can serve a system as the sole main pump for pressurizing a primary liquid flow, incorporates, in a single machine, a rotor-drum type AP (axial piston) pump and a PX...
8419381 Tandem piston pump  
In a tandem piston pump (1) from which pump discharge pressure from four systems is extracted, a tilt axis direction of a front swash plate (14) and a tilt axis direction of a rear swash plate...
8419382 Piston compressor  
A compressor includes a rotary shaft, a cam, a cylinder block, pistons, a thrust bearing, a rotary valve, and an oil passage. The rotary shaft has an in-shaft passage formed therein. The in-shaft...
8393878 Structure of preventing water from leakage for the pressurized pump of diaphragm type  
Water leakage and damage to the electric motor of a diaphragm type pressurized pump are avoided by providing the diaphragm with integral hollow cylinders which are inserted through ladder holes of...
8382458 High-pressure fuel pump  
A high-pressure fuel pump is comprises of: a plunger which slidably fits to a cylinder and reciprocates for pressurizing and discharging a fuel taken in a pressurizing chamber; an inlet valve...
8366407 Device for reducing pulsation in a variable displacement compressor  
The present invention is directed to provide a device for reducing pulsation in a variable displacement compressor. The compressor is connected to an external refrigerant circuit. The device for...
8353680 Air conditioning compressor  
A stroke-adjustable air conditioning compressor, in particular for motor vehicles, including a drive mechanism for pistons that move back and forth, the pistons being driven by an adjusting plate,...
8342816 Engine-driven hydraulic pump  
Engine-driven hydraulic pump for an aircraft, having a first and a second pump unit which each comprise an adjustable swash plate and a piston assembly coupled with said swash plate and driven by...
8333571 Pump having pulsation-reducing engagement surface  
A pump is disclosed. The pump may have a housing, and a body disposed within the housing and at least partially defining a plurality of barrels. The pump may also have a plurality of plungers...