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7226274 |
Cement slab leveling apparatus
A concrete slab leveling apparatus is provided that is built upon a vehicle such as a flatbed truck or trailer which makes it highly transportable enabling the invention to move from site to site...
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7131555 |
Method and device for discharging fluid
A method for discharging fluid, includes while keeping two members relatively moving to each other along a gap direction of a gap formed by two opposing surfaces of the two members, feeding fluid...
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6805538 |
Fuel tank mounted, motorized high pressure gasoline pump
A pump, for supplying high pressure fuel from a fuel tank to an engine via a common rail, includes a motor assembly ( 20 ) mounted on top of the fuel tank, a pump assembly ( 26 ) positioned within...
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6758656 |
Multi-stage internal gear/turbine fuel pump
A multi-stage internal gear/turbine fuel pump for a vehicle includes a housing having an inlet and an outlet and a motor disposed in the housing. The multi-stage internal gear/turbine fuel pump...
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6695591 |
Multi-stage gas compressor system
A multi-stage compressor comprises a gas compressor, a centrifugal blower having an input connected with a gas source and an output connected with the gas compressor and providing a flow of...
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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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6422829 |
Compound pump
The invention relates to a friction vacuum pump ( 1 ) containing at least one turbomolecular pump stage ( 6, 7 ), a screw pump stage ( 11, 12 ) connected to the delivery side of the pump, and a...
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6409477 |
Vacuum pump
A vacuum pump including suction and discharge regions, two gas friction pumps arranged on opposite side of the suction region and parallel to each other and each having at least one stage and a...
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6353274 |
Mounting structure of rotary shaft of rotary electric machinery
The present invention provides a mounting structure of a rotary shaft of rotary electric machinery in which it is possible to cope with vibration of the rotary shaft in an axial direction with a...
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6164939 |
Scroll pump
A scroll pump comprising a fixed scroll, an orbiting scroll orbiting with a radius which is the same as the eccentric distance of an eccentric shaft to the center of the fixed scroll and contacting...
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6106240 |
Gerotor pump
A gerotor pump including a ring gear and a pinion gear supported on a pump housing for rotation about parallel, laterally separated centerlines. A plurality of pump chambers defined by the teeth of...
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6059537 |
Aircraft fuel pump with centrifugal pump and regenerative pump stages
A fuel pressurization and pumping system for use in a turbine powered aircraft or the like makes use of the advantages of centrifugal pumps, even in a high pressure mode and includes a centrifugal...
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6039545 |
Method and apparatus for precision metering of high viscosity materials
A pump for precision metered pumping of high viscosity materials. A pump housing has a material inlet and a material outlet, a drive gear and at least one cooperating driven gear for receiving...
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6024541 |
Hydraulic axial piston pumps
A hydraulic axial pump/motor comprises a plurality of revolving as well as reciprocating pistons, operatively associated with a stationary port plate. The port plate comprises at least a first,...
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6022198 |
Twin pump with a charging pump
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6022197 |
Aircraft pump system with internal pressure control, comprising a regenerative pump and a centrifugal pump
Difficulties in adapting centrifugal pumps for use as fuel pumps for turbine powered aircraft are avoided in a system including a centrifugal volute pump (22) on a common shaft (18) with a...
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6012904 |
Vented fuel module reservoir with two-stage pump
A main fuel tank in an automotive vehicle contains a reservoir in which is located a two-stage electrically operated pump. The first stage is a rotary side lateral pump which draws fuel from the...
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5857842 |
Seamless pump with coaxial magnetic coupling including stator and rotor
A seamless pump is disclosed which includes a pump casing that houses a stator and a rotor. The stator and rotor provide enhanced pumping action in the seamless pump. The stator surrounds at least...
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5769626 |
Evacuation system with exhaust gas cleaning and operating process for it
An evacuation system (1) with exhaust gas cleaning, consists of at least one vacuum pump unit (4) and at least one cleaning unit (10) in series as to enable the continuous flow of fluid media...
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5599171 |
Rotary, self-priming, liquip pump, and an impellers and shaft assembly therefor, and a flexible-impeller pump assembly
A pump housing has a plurality of chambers formed therein, and a shaft journaled within, the shaft having impellers keyed thereto. Each chamber has one of the impellers disposed therein. One of the...
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5595477 |
Vacuum pumping stand
A vacuum pumping stand for the cyclic pumping-down of containers and for maintaining an operating vacuum in the containers, for the pumping-down of the container. The vacuum pumping stand has a...
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5551842 |
Unit for delivering fuel from a supply tank to the internal combustion engine of a motor vehicle
A device for delivering fuel from a storage tank to the engine of a motor vehicle, having a two-stage feed pump driven to rotate by an electric drive motor. The preliminary stage of the feed pump...
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5536148 |
Turbo vacuum pump
A turbo vacuum pump for compressing a low-pressure gas to discharge the compressed gas into atmosphere comprises pump stator having a gas flow passage comprising a plurality of annular flow...
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5478210 |
Multi-stage vacuum pump
A vacuum pump includes a plurality of rotors accommodated in a housing, a plurality of bearings for supporting the shafts of the rotors, respectively, a fluid-suction opening and a fluid-discharge...
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5445502 |
Vacuum pump having parallel kinetic pump inlet section
A vacuum pump includes a positive displacement vacuum pump structure section disposed on a discharge opening side; a kinetic vacuum pump structure section, disposed on a suction opening side, for...
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5417551 |
Housing arrangement for a synchronous plural motor fluid rotary apparatus
A fluid rotary apparatus includes rotors accommodated in a housing, driving shafts on which the rotors are mounted, upper and lower bearings for rotatably supporting upper and lower portions of...
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5413467 |
Oil-free type screw compressor device
A device for producing compressed air arranged to suction air from the atmosphere an increase the pressure of the suctioned air by a turbo-supercharger, to cool the air at high temperature by...
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5413466 |
Unified fuel pump assembly
A unified fuel pump assembly combines a vane-type pump and a booster stage for the inlet of the vane-type pump, in a unitary structure to substantially reduce "windage" losses caused by relatively...
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5401143 |
Multi-stage automotive fuel pump having angeled fuel transfer passage
A multi-stage automotive fuel pump includes a casing and motor located within the casing for driving primary and secondary pumping sections, with the primary and secondary pumping sections sharing...
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5393206 |
Fuel pump for a motor vehicle
A motor vehicle fuel pump including a tubular steel housing and a roller vane positive displacement pump and an electric motor in the tubular steel housing. The roller vane pump includes a pair of...
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5393203 |
Fuel pump for motor vehicle
A motor vehicle fuel pump including a tubular shell, an electric motor in the shell having an armature shaft rotatable about a longitudinal centerline of the shell, and a pump assembly at one end...
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5378111 |
Motor vehicle fuel pump assembly with pressure relief orifice
A fuel pump-suited for a Demand System motor vehicle fuel injection system includes a lower pressure vapor separating pump stage, a roller vane positive displacement high pressure pump stage, and a...
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5354179 |
Fluid rotating apparatus
A fluid rotating apparatus according to the present invention is designed to promptly achieve an extremely high degree of vacuum from atmospheric pressure by its single apparatus. Moreover,...
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5352097 |
Vacuum pump
A vacuum pump includes a positive displacement vacuum pump structure section disposed on a discharge opening side; a kinetic vacuum pump structure section, disposed on a suction opening side, for...
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5348448 |
Fluid rotating apparatus with plural drive motor synchronization system
A fluid rotating apparatus includes non-circular rotors accommodated in a housing, rotary shafts having the rotors, bearings for rotatably supporting the shafts, a fluid suction and a fluid...
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5338159 |
Co-rotational scroll compressor supercharger device
In a co-rotational scroll apparatus having two interleaving scroll wraps secured to end plates rotating about parallel, non-concentric axes, a procharging device affixed to one end plate and...
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5320501 |
Electric motor driven hydraulic apparatus with an integrated pump
An electric motor driven inline hydraulic apparatus comprising a housing having end members closing said housing, an electric motor stator mounted in said housing, an electric motor rotor, a shaft...
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5267837 |
Two-stage pumping apparatus with non-meshing first stage augers
A two-stage pumping apparatus is provided with a pump housing through which gross movement of material occurs generally from an infeed opening to a discharge opening. The first stage includes two...
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5261796 |
Electric-motor in-line integrated hydraulic pump
An integrated in-line electric motor/hydraulic pump that includes a pump housing having a pair of end members mounted at opposed ends of the housing. An electric motor includes a rotor on a shaft...
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5259735 |
Evacuation system and method therefor
An evacuation system in an ultra-high vacuum sputtering apparatus capable of shortening the pumping time of the system. A main pump, composed of a turbo-molecular pump and a baffle is positioned...
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5183392 |
Combined centrifugal and undervane-type rotary hydraulic machine
A rotary hydraulic machine having particular utility as a fuel pump for aircraft turbine engines that combines the desirable features of vane-type and centrifugal-type machines of similar...
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5123810 |
Power transmission
A hydraulic fluid pump for aircraft turbine engine fuel delivery systems comprises a housing having a pump drive shaft mounted for rotation therewithin. A centrifugal pump stage includes an...
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5118251 |
Compound turbomolecular vacuum pump having two rotary shafts and delivering to atmospheric pressure
A pump enabling a molecular vacuum to be reached, the pump comprising a stator and rotor assembly comprising two rotors having parallel shafts rotating in opposite directions, the stator including...
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5116362 |
Fuel metering and actuation system
A fuel metering and actuation system includes a main centrifugal pump 16 supplying fuel to the combustor 18. Gear pump 50 takes suction from the main pump discharge and supplies actuators 42, 44,...
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5096391 |
In-tank fuel reservoir with integral fill pump
A fuel delivery system for automotive engine and like applications that includes a canister for positioning within a fuel tank having a lower end with a fuel opening, and an internal wall spaced...
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5015162 |
Attachment for an oil well screw pump system
A pumping system for a heavy oil and sand slurry from a downhole location to the ground surface includes a conventional screw type pump having a rotor and stator. At the bottom of the stator at the...
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4954047 |
Evacuation apparatus
An evacuation apparatus comprising (1) a reciprocating vacuum pump, the piston rings and piston shaft sealing material of which are made of a self-lubricating material at least on the surface and...
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4944657 |
Two-stage pumping apparatus with low shear first stage
A two-stage pumping apparatus is provided with a pump housing through which gross movement of material occurs generally from an infeed opening to a discharge opening. A first stage non-positive...
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4865522 |
Fuel pump for an internal combustion engine having two pump units
A fuel feed device having a first pump assembled with an electric motor in a sheet-metal shell to form a self-contained unit. The drive shaft of the motor projects from the unit and is drivingly...
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4838765 |
Axial piston pump
The invention relates to a pump, in particular to an axial piston pump of the swash plate type, wherein the suction pressure medium is fed into the swash plate chamber, so as to be arranged in...
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