Patents for F04C 14 - Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations (3,663)
07/2000
07/20/2000DE19957886A1 Displacement pump eg for power assisted vehicle steering systems
07/20/2000DE19930911C1 Geared pump has a pinion with external teeth and a meshing hollow wheel with internal teeth and axial disks and springs for a reversing action with axial compensation for the high pressures in the closed circuit
07/18/2000US6089842 Gear oil pump with internal rotor, comprising extensions of reniform suction and pressure elements
07/18/2000US6088916 Method of making a pump having relief valve seat free of direct structural restraint
07/11/2000US6086337 Variable capacity pump
07/06/2000WO2000039465A1 Pump assembly comprising two hydraulic pumps
07/04/2000US6082984 Fluid pump having pressure pulsation reducing passage
06/2000
06/29/2000DE19952167A1 Pumpenanordnung mit zwei Hydropumpen Pump assembly with two hydraulic pumps
06/27/2000US6080321 Dialysis machine for the removal of toxic substances from the blood with agents for the decalcification of a dialysis liquid circulation as well as process for determining the degree of calcification of a dialysis machine
06/27/2000US6079955 Variable displacement pump
06/20/2000US6076367 Variable speed liquid refrigerant pump
06/14/2000EP1008754A2 Positive displacement pump systems
06/14/2000EP1007850A1 Rotary pump with hydraulic vane actuation
06/13/2000US6074189 Filling member-less internal-gear machine
06/08/2000WO2000032315A1 A gear pump and replaceable reservoir for a fluid sprayer
06/07/2000EP1005613A1 Low noise suction pump
06/07/2000EP0993554A4 Improvements to impeller pumps
06/06/2000US6071106 Hydraulic vane machine
05/2000
05/30/2000US6068460 Two speed gerotor motor with pressurized recirculation
05/18/2000WO2000028218A1 Rotary hydraulic machine
05/17/2000EP1001172A1 Vane pump or motor
05/17/2000CN1253240A Double speed motor with forced circulation
05/16/2000US6062835 Gerotor motor and parking lock assembly therefor
05/11/2000DE19849756A1 Antriebskopf für ein drehantreibbares Gestänge, insbes. zum Antreiben einer Bohrlochpumpe Drive head for a rotatably driven linkage, esp. For driving a downhole pump
05/04/2000WO2000025000A1 Drive head for a rotary-driven rod assembly, especially for driving a sand pump
05/04/2000DE19849935A1 Axial screw pump for producing hydraulic energy has two meshing screw spindles in housing, of which at least one is driven, with further housing enclosing spindles and located axially displaceably
05/04/2000CA2316792A1 Drive head for a rotary-driven rod assembly, especially for driving a sand pump
05/03/2000EP0997644A2 Gerotor motor
05/03/2000EP0846229B1 Fuel supply pump for a fuel injection pump for internal combustion engines
04/2000
04/27/2000DE19847132A1 Außenzahnradpumpe mit Fördervolumenbegrenzung External gear pump with flow volume limit
04/26/2000EP0811122B1 Pump having relief valve seat free of direct structural restraint
04/25/2000US6053703 Control method for displacement-type fluid machine, and apparatus thereof
04/25/2000US6053196 Flow regulator
04/20/2000DE19913805A1 Pressure limitation and safety valve for fuel feed pumps has valve body formed by plate of elastomer material to give short construction length
04/20/2000DE19913406A1 Fuel feed pump to feed fuel from an intake chamber into a pressure chamber contains regulator piston to influence hydraulic pump action, and is without bypass channel
04/20/2000DE19847144A1 Hydraulic internal gear engine, pref. hydraulic motor has housing cover with valve insert opening for back pressure valve fitted from outside, to prevent cavitation
04/19/2000EP0994257A1 External gear pump with delivery limitation
04/19/2000EP0993554A1 Improvements to impeller pumps
04/18/2000US6050795 Fuel feed gear pump having an overload safety device
04/13/2000WO2000020760A1 Rotary pump
04/12/2000EP0991865A1 Multiple pump control arrangement
04/12/2000CN1051358C Process for regulating the capacity of lubricant pumps and lubricant pump therefor
04/06/2000WO2000019102A1 Rotary machine
04/04/2000US6045333 Method and apparatus for controlling a submergible pumping system
03/2000
03/29/2000EP0989303A1 Lubrication pump for an internal combustion engine
03/28/2000US6042343 Variable displacement pump
03/23/2000WO2000015976A1 Mass balancing system with a lubricating oil pump for reciprocating engines
03/16/2000DE19942955A1 Fuel pump of inner gearwheel type for motor vehicle has inner gearwheel rotated by electric motor and internally toothed outer gear rotated by inner gear
03/16/2000DE19942466A1 Adjustable displacement pump comprises pump body with inner chamber and suction and delivery paths connected to inner chamber, together with cam ring
03/16/2000DE19927792A1 Oil pump for servo steering system on road vehicle incorporates rotor, cam ring, pump chamber and pressure plate arranged at least on one side of rotor and cam ring
03/16/2000DE19915319A1 Double hydro-pump, particularly double gearwheel pump, has pump housing in which two rotors revolve on common drive shaft, delivering hydraulic medium in separated pressure channels
03/09/2000DE19935781A1 Internal combustion engine hydraulic circuit
03/09/2000DE19837275A1 Vane cell pump with volume control has stroke ring supported on sliding/turning cam in housing to adjust pump feed volume
03/07/2000US6033196 Rotary pump
03/07/2000US6033195 Gerotor motor and improved spool valve therefor
03/07/2000US6033190 Flat faced bearing housing engaging flat faced pump rotor housing
02/2000
02/29/2000US6030196 Hydraulic variable-speed gear motor supplied with fluid and providing a variable torque
02/29/2000US6030195 Rotary pump with hydraulic vane actuation
02/29/2000US6030191 Low noise rotary vane suction pump having a bleed port
02/22/2000US6027323 Hydraulic vane machine
02/10/2000DE19934035A1 Gearwheel pump has inner toothed gearwheel working in conjunction with outer toothed gearwheel to form several pump chambers of variable volume during gearwheel rotation
02/08/2000US6022201 Hydraulic vane pump with flexible band control
02/03/2000DE19833700A1 Pressure control for hydraulic servo pump has a spring loaded control valve with a conical valve element to progressively close the hydraulic outlet with increasing pump pressure
01/2000
01/27/2000DE19833373A1 Supply flow regulating device for displacement pump, with movable sprung piston having throttle boring into which conical pin projects
01/27/2000DE19832719A1 Vane pump for supplying fluid, with spring-loaded piston in flow regulating valve
01/25/2000US6017202 Bi-directional gerotor-type fluid pump
01/13/2000WO2000001433A1 Liquid pump
01/11/2000US6012907 Flow-regulating arrangement for a hydraulic transporting device
01/05/2000CN1240256A Oil pump
01/04/2000US6010321 Rotary mower spindle and hydraulic motor
12/1999
12/30/1999DE19927400A1 Hydraulic advancing unit, eg for use in vehicles
12/29/1999EP0832361B1 Vane cell pump
12/21/1999US6004111 Oil pump apparatus
12/21/1999US6004110 Displacement pump
12/14/1999US6000914 Rotary vane cell pump having a frustrum orifice
12/09/1999WO1999063271A1 A device for the supply of a liquid fuel to a burner member
12/09/1999DE19834116C1 Hydraulic conveyor servo control flow regulation valve
12/09/1999DE19825367A1 Continuously variable output displacement pump using variable viscosity fluid in an annular chamber
12/02/1999WO1999061798A1 Hydraulic pressure ratio transducer
11/1999
11/25/1999DE19917506A1 Vane type variable delivery pump for power steering of motor vehicle
11/17/1999EP0956451A2 Gerotor pump for liquid media
11/11/1999WO1999057438A1 The volume adjustable rotary systems
11/11/1999DE19918393A1 Rotary pump supplying fuel oil to diesel engine
11/10/1999EP0954704A1 Flow control valve
11/10/1999EP0954678A1 Hydraulic vane pump with flexible band control
10/1999
10/07/1999DE19812784A1 Pumpe mit integrierter Leistungsregelung Pump with integrated power control
10/05/1999US5961293 In-take fuel pump assembly with unitary control unit for internal combustion engines
09/1999
09/30/1999DE19913897A1 Oil pump mechanism in motor vehicle engines
09/29/1999EP0945620A2 Pump with integrated power control
09/23/1999DE19908174A1 Fluid pump for use in fuel pump in vehicles
09/22/1999EP0943805A1 Process and sensor for cavitation detection as well as a device comprising such sensor
09/22/1999EP0943056A1 Motor pump unit
09/10/1999WO1999045272A1 Integrated positive displacement pump motor assembly for fuel dispensing
08/1999
08/26/1999WO1999042727A1 Hydrostatic pump or engine with infinitely variable debit or impulse
08/11/1999EP0934464A1 Progressive cavity pump
07/1999
07/28/1999EP0931937A1 Speed control for hydraulic pump
07/28/1999EP0931935A1 Gerotor motor and improved spool valve therefor
07/27/1999US5927824 Vehicle hydraulic brake system
07/13/1999US5921342 Power assisted steering apparatus for automotive vehicle
07/13/1999US5921274 Internal relief and bypass valve for pumps and piping systems
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