Matches 1 - 41 out of 41


Match Document Document Title
US20070201989 LOW RIPPLE GEAR PUMP/MOTOR  
A gear pump system comprises a gear pump having an inlet, an outlet, and at least one rotating gear for pumping fluid from the inlet to the outlet and producing an output flow characterized by...
US20070048147 Dry operating screw-type compressor with pneumatically controlled air relief valve  
A screw-type compressor having a motor driven and dry operating compressor unit. A butterfly valve is disposed in an intake line connected to the suction side of the compressor unit. An adjustment...
US20080253904 Oil pump pressure control device  
A device for reducing friction in a variable flow rate oil pump in which two discharge ports are provided and which uses three rotors while maintaining characteristics identical to the pressure...
US20080307808 Capacity Variable Device for Rotary Compressor and Driving Method of Air Conditioner Having the Same  
In a capacity variable device for a rotary compressor and an operation method of an air conditioner having the same in accordance with the present invention, a valve hole (14) in which a sliding...
US20080206075 Compressor Having a Dual Slide Valve Assembly  
A compressor having a dual slide valve assembly is disclosed. The slide valve assembly includes: i) a volume slide valve mechanism that is slidably movable to control compressor volume ratio and...
US20070243081 HYDRAULIC PUMP, HYDRAULIC PUMP UNIT, AND HYDRAULIC DRIVING UNIT  
A hydraulic pump can prevent breakage at a high pressure without providing a separate relief valve. A housing has a body side and a lid side that are divided by a surface perpendicular to a...
US20080056887 HYDRAULIC GEAR MOTOR WITH INTEGRATED FILTER  
A cooling fan drive apparatus with an integrated filter comprises a gear motor contained within a housing that includes internal passages through which hydraulic fluid can flow and structure...
US20090208348 Capacity varying device for scroll compressor  
A capacity varying device for a scroll compressor is provided. The device may include a fixed scroll and an orbiting scroll both located in a casing, a low pressure passage formed by an orbiting...
US20110020161 Displacement Type Compressor Having a Self-Start Synchronous Motor and Start Load Reducing Means  
In order to make a displacement type compressor be able to reliably start without increasing an outside diameter dimension of the compressor while using a self-start synchronous motor having high...
US20090028724 SELF-MODULATED SCROLL COMPRESSOR WITH OPTIMIZED BUILT-IN VOLUME RATIO  
A self-modulating scroll compressor includes a built-in volume ratio that is defined as the ratio of a volume of a compression pocket just after completion of suction, i.e. at a beginning of a...
US20140348669 Pump Device for Ice Cream or Yogurt Machine  
A system includes a pump device for producing a mixture product, a casing having a concealed cavity for receiving the mixture product via the pump device; and a clutch unit operatively linked to...
US20070140866 Oil-injection screw compressor  
An oil-injection screw compressor in which oil is mixed into compressed gas, in order to prevent back flow during the no-load running and stoppage of the compressor body while contributing to a...
US20090041594 VARIABLE DISPLACEMENT TYPE GEAR PUMP  
In a variable displacement type gear pump, each of a main gear pump portion and a sub gear pump portion has a drive gear, a driven gear engaging with the drive gear, and an urging portion applying...
US20060147318 Oil carry-over prevention from helium gas compressor  
The present invention provides a pumped helium circuit comprising a compressor (14) with a high pressure port (16) and a low pressure port (18) each connected to a supplied equipment (61,63,65,67)...
US20100054963 VARIABLE DISPLACEMENT ROTARY PUMP  
A variable displacement rotary pump includes a main pump unit, an auxiliary pump unit, a discharge passage, a bypass passage, a suction passage, a check valve and a control valve. The suction...
US20050249622 Device for controlling parasitic losses in a fluid pump  
A device for reducing parasitic loss of a fluid pump is accomplished by connecting the power supply driveshaft to the drive pump element through a clutch element. The clutch element engages the...
US20100310403 OSCILLATING VARIABLE DISPLACEMENT RING PUMP  
An oscillating variable displacement ring pump provides both positive and variable displacement. A housing circumscribes a pump chamber. The pump chamber encases an oscillating ring driven by a...
US20060045761 Oil return tube aligned over motor protector in scroll compressor  
A scroll compressor is provided with an oil return tube having an outlet for directing oil toward a motor protector for an electric motor. The oil supply tube is positioned to be at an angle...
US20090104049 Sliding Vane Pump  
The present disclosure provides a fluid pump having a pump motor a pump drive shaft and a vane pump assembly. The vane pump assembly includes pump housing with a fluid inlet port in a distal...
US20080019846 Variable displacement gerotor pump  
A variable displacement pump having an inner rotor (gerotor) and an outer rotor is disclosed. Advantageously, the pump provides a movable outer rotor capable of changing the amount of fluid...
US20070140872 COMPRESSOR ASSEMBLY FOR AIR CONDITIONER SYSTEM  
An air conditioning system includes a compressor assembly having a housing and a valve. The housing generally encloses a discharge chamber and a suction chamber. The valve is operative for...
US20060222519 Pump device  
A fixed capacity pump (P) sucks working oil from a reservoir (R) through a conduit (Rp) and a suction passage (1), and discharges the pressurized working oil into a discharge passage (2) connected...
US20050169773 Oil pump for an automatic transmission of a motor vehicle  
An oil pump for a motor vehicle automatic transmission comprising a gear housing (2), a pump housing (1) and a pump rotor (3) that can be driven by a motor of the motor vehicle. In order to...
US20080317610 Capacity Variable Type Rotary Compressor and Driving Method Thereof  
Disclosed is a capacity variable type rotary compressor and a driving method thereof. In the compressor, a first discharge port (11) is formed at a cylinder (10), a second discharge port (23)...
US20100008797 ELECTRIC PUMP UNIT AND ELECTRIC OIL PUMP  
An electric pump unit which comprises an outer rotor having a trochoidal tooth profile and an inner rotor which meshes with the outer rotor in such a state the inner rotor and the outer rotor are...
US20070036661 Capacity modulated scroll compressor  
A scroll compressor has a biasing chamber which contains a pressurized fluid. The pressurized fluid within the chamber biases the two scroll members together. A rotatable ring is attached to one...
US20080025851 Inverted pressure regulating valve for an engine oil pump  
The present invention provides a valve assembly for relieving fluid pressure having a pump housing with a low pressure inlet chamber and a high pressure discharge chamber, a relief aperture...
US20110064590 Valve Arrangement for Peripherally Pivoted Oscillating Vane Machine  
The present invention relates to improved integrated valve assemblies, preferably, for use in an oscillating vane machine (OVM) that provide easy assembly and maintenance, direct fluid...
US20090047147 VARIABLE DISPLACEMENT VANE PUMP  
A variable displacement vane pump includes a drive shaft; a rotor formed with slots; vanes received by the slots; a cam ring which can become eccentric and cooperates with the rotor and vanes to...
US20080069704 Pumping System  
A pumping system (100*) having a pump (10*), such as a variable-displacement vane pump (10*) or a gear pump. The pump (10*) in turn has hydraulic pressure-control dissipating devices (29, 30) for...
US20100183454 ROTARY DISPLACEMENT PUMP  
A rotary displacement pump (2) for pumping a medium, having a pump housing (3); a reception chamber (4) which is formed in the pump housing (3), with an inlet area (26) and an outlet area (27); at...
US20050207916 Sliding vane pump  
In a sliding vane pump comprising a rotor supported in a housing and having vanes supported radially movably in radially extending slots of the rotor so as to be in contact with the inner surface...
US20100202904 SCREW COMPRESSOR PULSATION DAMPER  
A slide valve for use in a screw compressor comprises a main body portion configured for sliding in a pressure pocket of a screw compressor to regulate output of a working matter through screw...
US20050163630 Compressor  
A compressor includes a housing member having a through hole. The compressor includes a conductive portion through which external electricity is supplied to a motor mechanism. The conductive...
US20060228230 Liquid pump  
A fluid pump having a housing containing a pump chamber containing least one rotary driven delivery element which delivers fluid to a pressure chamber from an intake chamber connected to a...
US20100272580 SLIDE VALVE WITH HOT GAS BYPASS PORT  
A compressor includes a slide valve (24) having a passage that can be in fluid communication with a discharge plenum (22) and a suction plenum (20). The slide valve (24) position may be axially...
US20140119956 Bypass Directional Control Valve  
A bypass directional control valve has a valve sleeve, and two sets of outlet ports on each of two axial sides of the inlet ports. The outlet and the inlet ports all are formed to be cylindrical...
US20110135509 SCROLL COMPRESSOR CAPACITY MODULATION WITH HYBRID SOLENOID AND FLUID CONTROL  
A scroll compressor includes a compressor shell having first and second scroll members. The scroll members each have a base and a generally spiral wrap extending from its base. The generally...
US20100183453 SCROLL COMPRESSOR WITH THREE-STEP CAPACITY CONTROL  
A scroll compressor comprises a first scroll member having a generally spiral wrap and a second scroll member having a generally spiral wrap. The generally spiral wraps interfit to define...
US20100158710 SCROLL COMPRESSOR  
A compressor includes a housing, a fixed scroll, a movable scroll and a control valve. The housing has a suction chamber, a discharge chamber and a backpressure chamber formed therein. The scrolls...
US20160377078 PUMP DEVICE  
A pump device includes a pump, a flow control valve having a spool that returns a part of working fluid discharged from the pump to a suction side, and a differential pressure adjusting device...

Matches 1 - 41 out of 41