| Patents for F04C 14 - Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations (3,663) |
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| 12/20/1992 | CA2065165A1 Gear pump having internal bypass valve |
| 12/16/1992 | EP0518265A1 Electronic regulator for gasoline engine driven piston paint pumps |
| 11/26/1992 | WO1992020923A1 Casing for an eccentric worm-screw pump |
| 11/26/1992 | WO1992020922A1 Fully variable output hydraulic gear pump having an axially translatable gear |
| 11/24/1992 | US5165865 Intake neck connection for a hydraulic pump |
| 11/10/1992 | US5161961 Gear pump with counterbalanced radial forces and two piece radial seals |
| 11/10/1992 | US5161959 Viscosity sensitive hydraulic pump flow control |
| 10/22/1992 | DE4112868A1 Displacement pump with control valve - has valve cone with collar which creates restrictor and pressure area |
| 10/21/1992 | EP0509724A1 Power transmission |
| 10/19/1992 | CA2066023A1 Power transmission |
| 10/15/1992 | DE4112196A1 Vane-type pump with reduced high temp. effect - comprises vaned rotor and outer ring assembly and pressure plate with elastic elements in recesses |
| 09/24/1992 | DE4109149A1 Aluminium alloy control disc for vane cell pump |
| 09/23/1992 | EP0505033A1 Viscosity sensitive hydraulic pump flow control |
| 09/16/1992 | CN1018278B Rotary positive-displacement pump or motor and usage thereof |
| 08/26/1992 | EP0500519A2 Valve |
| 08/26/1992 | EP0499794A1 Hydraulic pump |
| 08/25/1992 | US5141418 Variable capacity type vane pump with a variable restriction orifice |
| 08/13/1992 | DE4103556A1 Min. vol. valve with housing - incorporates valve seating with closure piece between inlet and outlet, with annular slide plate and by=pass |
| 08/04/1992 | US5135371 Internal gear pump with radial openings |
| 07/30/1992 | DE4102406A1 Improved safety circuit for hydraulically driven transfer pump - for used oil etc. in road tanker |
| 07/30/1992 | DE4102162A1 Quiet running electric fuel pump for motor vehicle - has gear shaped impeller with sloping teeth for controlled axial thrusts |
| 07/29/1992 | EP0496170A2 Positive displacement pumps |
| 07/23/1992 | WO1992012357A1 Hydraulic machine |
| 07/23/1992 | CA2100461A1 Hydraulic machine |
| 07/02/1992 | DE4014636A1 Variable delivery rotary liq. pump - uses inner pump housing, swivelable about pivot point in outer pump housing for vol. variation |
| 06/25/1992 | CA2058325A1 Positive displacement pumps |
| 06/23/1992 | US5123821 Screw spindle pump with a reduced pulsation effect |
| 06/16/1992 | US5122335 Forming half gear members by powder metallurgy, mating |
| 06/09/1992 | US5120201 Brushless DC fuel pump responsive to pressure sensor |
| 06/09/1992 | US5120200 Hydraulic drive assembly |
| 05/31/1992 | CA2056733A1 Gear pump for a metered liquid dispensing system |
| 05/29/1992 | WO1992008895A1 Gerotor pumps |
| 05/29/1992 | CA2095133A1 Gerotor pumps |
| 05/20/1992 | EP0486164A1 Gerotor pumps |
| 05/14/1992 | WO1992008049A1 Two speed gerotor motor with centrally located valve and commutator |
| 05/12/1992 | US5112199 Fluid pump unit with flow control valve |
| 05/12/1992 | US5111660 Parallel flow electronically variable orifice for variable assist power steering system |
| 05/07/1992 | DE4034820A1 Speed control for gear motor - uses thermostatic valve with staged bore for driving cooling fan to vary effect in IC engine cooling system |
| 05/05/1992 | US5110463 Noncaking, pump with wear resistant valve |
| 05/05/1992 | US5110269 Gas turbine fuel pumping apparatus |
| 04/30/1992 | WO1992007179A1 Fuel supply system |
| 04/30/1992 | DE4134219A1 Gear tooth pump with variable volumetric flow - has additional gears which are disconnected from driving shaft as pressure rises |
| 04/09/1992 | DE4031476A1 Hydraulic control circuit for synchronising two hydromachines - has by=pass valves in parallel with machines, enables machine of equal displacement to be used |
| 04/01/1992 | EP0478514A1 Variable delivery gear pump |
| 04/01/1992 | EP0478107A2 Dual capacity fluid pump |
| 03/28/1992 | CA2041592A1 Dual capacity fluid pump |
| 03/24/1992 | US5098259 Fluid pump unit with flow control valve |
| 03/17/1992 | US5096397 Suction-controlled gear ring pump |
| 03/12/1992 | DE4116697C1 Casing for eccentric worm pump with split stator jacket - has stator arranged to burst on excess of preset inner overpressure in split region |
| 03/05/1992 | WO1992003636A1 Guided vanes hydraulic power system |
| 03/03/1992 | USRE33835 Hydraulic system for use with snow-ice removal vehicles |
| 02/25/1992 | US5090881 Variable-displacement vane-pump |
| 02/11/1992 | US5087177 Dual capacity fluid pump |
| 02/04/1992 | US5085187 Integral engine oil pump and pressure regulator |
| 01/23/1992 | DE4123689A1 Throttle control for vane cell pump - uses bush and sleeve to vary flow curve via throttling |
| 12/12/1991 | DE4018326A1 Positive displacement pump with rotating chambers - has adjustable suction or discharge volume per revolution with primary and secondary adjustment on control ports |
| 12/10/1991 | US5071327 Two speed gerotor motor with centrally located valve and commutator |
| 12/03/1991 | US5069608 Vane pump for delivering pasty substances |
| 11/21/1991 | EP0457491A1 Gerotor pumps |
| 10/24/1991 | DE4011671A1 Controllable vane cell pump - has arrangement of stroke chamber for high speed running |
| 10/22/1991 | CA1290934C Adhesive pump and it's control system |
| 10/16/1991 | EP0451366A1 Suction line connection for a liquid pump |
| 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 |
| 09/26/1991 | DE4009063A1 Engine cooling fan driven by gear tooth motor - has speed controlled by pressure disc |
| 09/19/1991 | DE4107704A1 Hydraulic pump inner gearwheel type - has several peripherally distributed outlet apertures closed by plate spring-type outlet valve |
| 09/12/1991 | DE4007073A1 Method of controlling delivery flow of gear pump |
| 09/11/1991 | EP0445584A1 Planetary gear pump or motor and process for radial force compensation |
| 09/11/1991 | EP0445529A1 Hydraulic device |
| 09/04/1991 | CN1054297A Balanced planetary gear pump |
| 08/20/1991 | US5040951 Oil pump |
| 08/14/1991 | DE4004142A1 IC-piston engine - has adjustable displaced volume with drive shaft encompassed by eccentric wheels rotatable in relation to drive shaft |
| 07/30/1991 | US5035588 Rotary fuel pump with pulse modulation |
| 07/24/1991 | EP0264444B1 Downhole screw motor |
| 07/18/1991 | DE4101210A1 Control arrangement for vane cell pump - incorporates adjustable opening in control piston |
| 07/18/1991 | DE3943520A1 Device for changing timed flow in torsion vibration dampers |
| 06/25/1991 | US5026263 Rotary vane pump with valve to control vane biassing |
| 05/22/1991 | EP0428374A1 Positive displacement pump systems |
| 05/21/1991 | US5017101 Selectively operated gerotor device |
| 05/21/1991 | US5017098 Power transmission |
| 05/08/1991 | EP0426278A1 Dual capacity fluid pump |
| 05/07/1991 | US5013220 Oil pump having regulator valve isolated from dynamic pressure of pumped oil |
| 05/01/1991 | CA2022841A1 Dual capacity fluid pump |
| 04/17/1991 | EP0422617A1 Suction regulated annular gear pump |
| 04/10/1991 | EP0421959A1 Pumping station for the pressurization of antifire plants, civil plants and the like |
| 03/28/1991 | DE3931186A1 Gear wheel motor with precision speed control - provided by controlled pressure field acting on seal abutting side faces of engaged gear wheels |
| 02/26/1991 | CA1280638C Gear pump having conditional dry valve closure structure |
| 02/06/1991 | EP0220187B1 Flow regulating device for a rotary piston pump |
| 01/31/1991 | DE3924613A1 Feeding sludge at increasing counter-pressure by twin pumps - with transversed feeder including slider controlled to maximise total pump efficiency |
| 01/30/1991 | EP0410150A2 Gear pump |
| 01/17/1991 | DE3923518A1 Gear pump with externally meshing gears - incorporates control pipe for load sensing pressure |
| 01/15/1991 | CA1278954C Electrical commutation apparatus |
| 01/02/1991 | CA1278461C Heating oil pump for selective one or two-line operation |
| 12/27/1990 | EP0294399B1 Swivelling vane pump |
| 12/13/1990 | DE3918642A1 Rotary piston pump for watery fluids containing solids - has by=pass channel to avoid blockages between suction and pressure sides |
| 11/29/1990 | WO1990014518A1 Hydraulic rotary pump-turbine as a torque converter |
| 11/22/1990 | EP0398377A2 Rotary hydraulic machine |
| 11/22/1990 | EP0398053A1 Vane pump for foodstuffs in paste form |
| 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 |