| Patents for F04C 15 - Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups (7,179) |
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| 02/04/1992 | US5085561 Gas removal pump for liquid |
| 01/30/1992 | DE4024067A1 Geared pump for high viscosity liq. - has gearwheels mounted on sealed tapered roller bearings |
| 01/22/1992 | EP0467011A1 Liquid ring pump with magnetic coupling |
| 01/15/1992 | EP0466351A1 Improvements relating to gerotor pumps |
| 01/14/1992 | US5080567 Gerator hydraulic device having seal with steel and resilient members |
| 01/09/1992 | DE4031360A1 Coupling for eccentric screw pump - consists of flexible tube made from elastomeric material |
| 01/09/1992 | DE4021593A1 Magnetic pump using ferromagnetic powder - has two drops of ferromagnetic powder displaced around hollow ring via magnetic fields |
| 01/02/1992 | DE4120757A1 Sliding vane fluid pump - has damping chambers in housing which reduce noise and pressure pulsations |
| 12/31/1991 | US5076770 Gear pump having improved low temperature operation |
| 12/19/1991 | DE4111897A1 Torque transmission drive shaft - operates between centrally rotating driven shaft and eccentrically rotating drive pin, using sections plugged together |
| 12/10/1991 | US5071330 Roller-vane hydraulic machine |
| 11/28/1991 | WO1991018206A1 Pump assembly |
| 11/26/1991 | US5068554 Electric motor |
| 11/21/1991 | EP0457490A1 Gerotor pumps |
| 11/12/1991 | US5064452 Gas removable pump for liquid |
| 11/12/1991 | US5064362 Balanced dual-lobe vane pump with radial inlet and outlet parting through the pump rotor |
| 11/05/1991 | US5062777 Pump seal arrangement accessible from the base plate |
| 10/31/1991 | WO1991016537A1 Fuel feed-pump unit |
| 10/29/1991 | US5061227 Bearing system for wave generator drive |
| 10/17/1991 | DE4011846A1 Fuel supply system for vehicle engine |
| 10/16/1991 | EP0451684A1 Gear pump having improved low temperature operation |
| 10/15/1991 | US5056993 Liquid intake mechanism for rotary vane hydraulic motors |
| 10/10/1991 | DE4110734A1 Rotary vane pump with performance regulation on inlet - provides presettable regulation via control unit and system of boreholes and valve opening into annular chamber |
| 10/09/1991 | EP0451085A2 Screw rotor pump |
| 10/09/1991 | EP0450690A1 Displacer pump |
| 10/02/1991 | DE4115642A1 Hydraulic pump with radially sliding vanes - has housing with internal rib which presses the vane inwards |
| 10/01/1991 | US5052905 Gear motor with valve controlled pressure biased end-plate seal |
| 09/25/1991 | EP0343166B1 Gear machine (pump or engine) |
| 09/24/1991 | US5051065 Power transmission |
| 09/19/1991 | DE4107704A1 Hydraulic pump inner gearwheel type - has several peripherally distributed outlet apertures closed by plate spring-type outlet valve |
| 09/18/1991 | EP0377617B1 Gearwheel motor |
| 09/12/1991 | DE4107315A1 Screw spindle pump with conical profile spindle - has geometrical configuration which damps out pressure pulses |
| 09/12/1991 | DE4104397A1 Internal gear pump without sickle element - incorporates method of dimensioning teeth to give compact design |
| 09/10/1991 | US5046933 Vane pump with pressure leaking groove to reduce pulsations |
| 09/05/1991 | WO1991013256A1 Combined electric motor and pump unit |
| 09/04/1991 | EP0444941A1 Improvements in or relating to rotary pumps |
| 08/22/1991 | WO1991012431A1 Seal device for gear pump |
| 08/21/1991 | EP0442031A1 Brake for a hydraulic motor |
| 08/20/1991 | US5040950 Power washing apparatus |
| 08/13/1991 | US5039284 Fuel pump with a vapor vent valve |
| 07/30/1991 | USRE33652 Electrically driven compressor with a peripheral housing weld |
| 07/30/1991 | US5035588 Rotary fuel pump with pulse modulation |
| 07/30/1991 | US5035585 Multiple connector for rotation vacuum pumps |
| 07/24/1991 | EP0264444B1 Downhole screw motor |
| 07/11/1991 | DE3943369A1 Encased medical gear pump - has pump wheel driven electromagnetically by stationary coil and rotating magnet on pump shaft |
| 07/02/1991 | US5028221 High pressure hydraulic generator receiver for power transmission |
| 06/19/1991 | EP0433079A2 Gas removable pump for liquid |
| 06/19/1991 | EP0433042A2 Degasifying liquid pump |
| 06/16/1991 | CA2032181A1 Gas removable pump for liquid |
| 06/11/1991 | US5022837 Seal arrangement for a gear machine |
| 06/04/1991 | US5020826 Vehicle suspension system |
| 05/22/1991 | EP0427973A1 Gear pump |
| 05/15/1991 | EP0427046A1 Vehicle suspension system |
| 05/07/1991 | US5013221 Rotary fuel pump with pulse modulation |
| 05/07/1991 | US5013220 Oil pump having regulator valve isolated from dynamic pressure of pumped oil |
| 04/17/1991 | EP0422617A1 Suction regulated annular gear pump |
| 04/10/1991 | EP0421616A2 Hydraulic device |
| 04/10/1991 | EP0421020A1 Gear machine for use as a pump or motor |
| 04/09/1991 | US5006048 Electrically-operated gear rotor pump |
| 04/02/1991 | US5004412 Gear machine for use as a pump or motor |
| 03/28/1991 | DE4015984A1 Eccentrically controlled rotary piston pump - uses eccentric spindle to control piston movement also suction and compression operations |
| 03/28/1991 | DE3930734A1 Vaned rotor pump for vehicle door locking mechanism - has spindle with vertical ends housed in deep part of recess in rotor |
| 03/06/1991 | EP0415089A2 Axial sealing |
| 02/19/1991 | US4993720 Self-sealing mechanical seal gland for pumps and other machinery |
| 02/12/1991 | US4992034 Low-speed, high-torque gerotor motor and improved valving therefor |
| 02/07/1991 | DE4024297A1 Electric machine with screw or spur gears - arranged so that inner rotating screw or spur gear on rotor has one tooth fewer than outer fixed screw or spur gear |
| 02/06/1991 | EP0411225A1 Lubrication of gear pump trunnions |
| 01/30/1991 | EP0410150A2 Gear pump |
| 01/29/1991 | US4987975 Portable automobile grease suction machine |
| 01/22/1991 | US4986739 Gerotor pump having axial fluid transfer passages through the lobes |
| 01/20/1991 | CA2021596A1 Pump structure |
| 01/17/1991 | DE3923518A1 Gear pump with externally meshing gears - incorporates control pipe for load sensing pressure |
| 01/15/1991 | CA1278954C Electrical commutation apparatus |
| 01/10/1991 | WO1991000429A1 Pumps |
| 01/10/1991 | DE4018509A1 Vane cell pump with vanes in axial slots - uses method of connecting rotor to bearing shaft |
| 01/10/1991 | DE3921735A1 Vane cell pump with several pressure connections - incorporates system for altering size of vane cells |
| 01/03/1991 | DE4020159A1 Rotary vane pump for power steering - provision of capillary groove to absorb seal grease |
| 01/03/1991 | DE4019097A1 Vane cell pump for power steering - uses vanes with recesses in faces |
| 01/02/1991 | EP0405161A1 Screw rotor pump |
| 01/02/1991 | CA1278461C Heating oil pump for selective one or two-line operation |
| 01/01/1991 | US4981423 Hydraulic motor with wobble-stick and brake assembly |
| 12/27/1990 | EP0294399B1 Swivelling vane pump |
| 12/25/1990 | US4980521 Power transmission apparatus |
| 12/20/1990 | DE3919939A1 Hydraulic motor drive for engine cooling fan - has valve which increases pressure on motor gears with increasing speed |
| 12/18/1990 | US4978282 Electrical fuel pump for small motorcycle engine |
| 12/05/1990 | CN1047551A Power transmission |
| 11/28/1990 | EP0399696A1 Flexible drive shaft |
| 11/28/1990 | EP0399387A2 Rotary vane machine |
| 11/20/1990 | US4971536 Rotor for fluidic apparatus |
| 11/20/1990 | US4971535 Tandem rotary pump with pressure chamber between two intermediate side plates |
| 11/20/1990 | US4971534 Gear pump having a pressure biased side sealing plate and throttled outlet |
| 11/20/1990 | US4971530 Aggregate for feeding fuel from supply tank to internal combustion engine |
| 11/20/1990 | US4971527 Regulator valve for an ink marking system |
| 11/07/1990 | EP0395745A1 Pump arrangement in which the pump housing constitutes the pump foundation |
| 11/07/1990 | CN1046779A Low-speed, high-torque gerotor motor and improved valving therefor |
| 11/06/1990 | US4968233 Hydraulic gear motor |
| 11/06/1990 | CA1275859C Closed center hydraulic devide |
| 10/31/1990 | EP0394821A2 Valve for gerotor motor |
| 10/31/1990 | DE4012929A1 Gear pump for delivering plastics melts - has groove4 in teeth of gears |
| 10/10/1990 | EP0391288A2 Pumping apparatus |