| Patents for F04B 1 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders (10,723) |
|---|
| 07/27/1993 | US5230275 Eccentric anti-friction drive for fluid power apparatus |
| 07/27/1993 | US5230274 Variable displacement hydraulic pump with quiet timing |
| 07/20/1993 | US5228844 Rotary distributor type fuel injection pump |
| 07/20/1993 | US5228840 Positive displacement pumps |
| 07/13/1993 | US5226349 Variable displacement hydrostatic pump and improved gain control thereof |
| 07/08/1993 | WO1993013301A1 Hydraulic control device |
| 07/07/1993 | EP0549883A1 Control system for hydraulic pumps of the variable displacement type |
| 07/07/1993 | CN1074019A Valving method for low-noise axial plunger pump and valve plate structure |
| 07/01/1993 | DE4143153A1 Hydraulische steuereinrichtung Hydraulic control device |
| 07/01/1993 | DE4142032A1 Radial piston pump for use on vehicles - has pressure responsive check valve in each fluid outlet chamber |
| 06/23/1993 | EP0548000A2 Distributor type fuel injection pump |
| 06/17/1993 | DE4140801A1 Externally activated radial piston pump - has several hollow pistons in bores of pump ring body which are in effective connection with eccentric of drive shaft. |
| 06/16/1993 | CN2136344Y Axial plunger booster water flooding pump |
| 06/15/1993 | US5220225 Integrated electric motor driven inline hydraulic apparatus |
| 06/10/1993 | WO1993011376A1 Shift gear with a positive-displacement pump |
| 06/09/1993 | EP0544856A1 Electric-motor-driven hydraulic pump. |
| 06/09/1993 | EP0500540B1 Device for adjusting the relative angle of rotation of a shaft to a drive wheel, especially the camshaft of an internal combustion engine |
| 06/08/1993 | US5216943 Piston for hydrostatic axial and radial piston machines and method for the manufacture thereof |
| 06/03/1993 | DE4139611A1 Getriebe mit einer verdraengerpumpe Transmission with a positive displacement pump |
| 06/01/1993 | US5215449 Distributor type fuel injection pump |
| 06/01/1993 | US5215443 High pressure liquid pump |
| 05/27/1993 | WO1993010349A1 Water pumps and motors |
| 05/27/1993 | CA2116329A1 Water pumps and motors |
| 05/26/1993 | EP0530289A4 Rotary machine |
| 05/26/1993 | CN1020942C Pressure compensating variable hydraulic pump control system |
| 05/25/1993 | US5213482 Hydraulic radial-type piston pump |
| 05/25/1993 | US5213025 Conical rod piston |
| 05/19/1993 | DE4237049A1 Radial piston pump assembly - has pistons driven in radial direction by bearer ring set in stagger motion by rotating eccentric |
| 05/18/1993 | US5211064 For a vehicle propulsion system |
| 05/13/1993 | DE4237851A1 Radial piston pump with actuating eccentric |
| 05/13/1993 | DE4202082C1 Hydraulic pump or motor control - has two independently rotating vanes controlling access to high- and low-pressure connections |
| 05/12/1993 | EP0541337A1 Electric motor driven hydraulic appartus with an integrated pump |
| 05/11/1993 | US5209155 Radial piston engine |
| 05/05/1993 | EP0540284A2 Hydraulic piston pump with servo displacement control |
| 05/05/1993 | EP0539849A1 Eccentric anti-friction drive for fluid power apparatus |
| 05/05/1993 | CA2082038A1 Electric motor driven hydraulic apparatus with an integrated pump |
| 05/04/1993 | US5207771 Radial plunger type pump with counter weight and washer integrally secured |
| 05/04/1993 | US5207751 Swash plate type pump with swash plate tilt angle controller |
| 05/04/1993 | US5207144 Swashplate leveling device |
| 04/29/1993 | DE4200495A1 Piston rod assembly with tumbler discs - has hollow lightweight piston with conical tip attached to camshaft ring |
| 04/28/1993 | EP0538637A1 Radial-piston machine |
| 04/21/1993 | CN1071229A Pulsive resonance pulling machine |
| 04/14/1993 | EP0536267A1 Adjustable rotor for a radial piston fluid machine |
| 04/13/1993 | US5201637 Hydraulic piston pump with servo displacement control |
| 04/13/1993 | US5201260 Hydrostatic machine |
| 04/08/1993 | DE4132609A1 Electric drive motor for pump and/or compressor - uses single point bearing for rotor so that other end of shaft can rotate free of bearing forces |
| 04/06/1993 | US5199259 Assembly composed of a pressurized fluid mechanism and a disc brake coupled thereto |
| 04/01/1993 | WO1993006368A1 Double acting simplex plunger pump |
| 04/01/1993 | DE4132456A1 Radial piston machine - has pistons located in housing bore and with domes on stroke ring which is movable in recess of housing in longitudinal direction of piston axes. |
| 03/31/1993 | EP0534067A2 Hydrostatic machine with drainage for leaking oil |
| 03/25/1993 | DE4131033A1 Radial piston pump driven by eccentric - uses ball in cage to control valve closure time and reduce noise |
| 03/25/1993 | DE4131032A1 Radial piston pump driven by eccentric - uses valve with interchangeable ball to vary delivery flow |
| 03/23/1993 | US5195879 Improved method for injecting treatment chemicals using a constant flow positive displacement pumping apparatus |
| 03/17/1993 | EP0531831A1 Axial piston machine for installation in a gear case |
| 03/11/1993 | DE3844780C2 Axial piston pump or motor |
| 03/10/1993 | EP0530289A1 Rotary machine. |
| 03/03/1993 | EP0529334A2 Liquid delivery and vaporization system |
| 03/03/1993 | EP0368963B1 Piston machine |
| 03/02/1993 | US5190447 Hydraulic pump with integral electric motor |
| 03/02/1993 | US5190446 Pump control method and poppet valve therefor |
| 03/02/1993 | US5189999 Device for adjusting the relative angle of rotation of a shaft to a drive wheel, especially the camshaft of an internal combustion engine |
| 02/25/1993 | DE4127611A1 Suction valve for radial piston pump - uses curved spring extension to limit movement of ball-shaped valve member |
| 02/18/1993 | DE4216877A1 Radial piston pump assembly - has friction-absorbing collar between piston and guide shoe |
| 02/18/1993 | DE4210767C1 Flange for axial-flow piston pump - has separate turning portion, rotatable w.r.t. bearing housing, overlapping with central aperture jacket region of bearing housing |
| 02/16/1993 | US5186094 Pressurized fluid mechanism comprising at least two distinct operational cylinder capacities |
| 02/09/1993 | US5184536 Swash plate type piston pump/motor |
| 02/03/1993 | EP0526333A1 Pressurised fluid mechanism with equalizing enclosures |
| 02/03/1993 | EP0524922A1 Synchronization mechanism for radial piston machine. |
| 02/02/1993 | US5183396 Double acting simplex plunger pump |
| 02/02/1993 | US5182978 Bent axis type variable displacement hydraulic machine |
| 01/27/1993 | EP0524437A1 Hydraulic piston motor |
| 01/27/1993 | EP0308508B1 Variable-capacity piston machine |
| 01/26/1993 | US5181837 Electric motor driven inline hydraulic apparatus |
| 01/21/1993 | WO1993001073A1 Drive unit, in particular motor-driven pump unit for slip controlled braking systems |
| 01/21/1993 | DE4123674A1 Hydrostatic piston engine - has controller made from concentric elements of differing material characteristics |
| 01/21/1993 | DE4123669A1 Intake-controlled reciprocating pump - having pressure medium duct with varying coefficients of resistance |
| 01/21/1993 | DE4123380A1 Reciprocating pump construction - has pump housing including plungers and has intake duct with valve |
| 01/20/1993 | EP0523384A1 Hydrostatic piston machine |
| 01/19/1993 | US5179889 Radial piston engine |
| 01/13/1993 | EP0522116A1 Radial-piston pump. |
| 01/07/1993 | WO1993000513A1 Electric-motor-driven hydraulic pump |
| 01/07/1993 | DE4122486A1 Antriebsaggregat, insbesondere motor-pumpenaggregat fuer schlupfgeregelte bremsanlagen Drive unit, particularly motor-pump unit for slip-controlled braking systems |
| 01/06/1993 | CN1067712A Positive-displacement pump with slider and rotor |
| 01/05/1993 | US5176511 Seal structure for a rotating cam pressurized fluid device |
| 01/05/1993 | US5176066 Axial piston pump apparatus with an improved drive mechanism |
| 12/30/1992 | EP0520286A2 Radial piston pump |
| 12/30/1992 | CN1067482A Multipurpose pump for aeration and liquid suction |
| 12/24/1992 | DE4120665A1 Elektromotorisch angetriebene hydraulikpumpe Electric motor-driven hydraulic pump |
| 12/23/1992 | CN2125727U Single-plunger hydraulic pump with controlling valve |
| 12/23/1992 | CN1067295A Sleeve pump |
| 12/22/1992 | US5173039 Double acting simplex plunger pump |
| 12/22/1992 | US5172623 Hydraulic rotary machine with pre-discharge opening for lubrication supply |
| 12/09/1992 | CN2124324U Synchronous operation high-pressure pump |
| 12/01/1992 | US5167493 Positive-displacement type pump system |
| 12/01/1992 | US5167181 Fluid transfer devices |
| 11/25/1992 | CN1066490A High-pressure water pump for pumping water |
| 11/24/1992 | US5165862 Loading machine equipped with a first and a second pump supplying pressure oil to at least one hydraulically driven working component, such as a hydraulic piston-cylinder device or hydraulic motor |
| 11/24/1992 | US5165321 Main bearing device for bent axis type axial piston pump/motor |
| 11/17/1992 | US5163822 Radial piston pump |
| 11/12/1992 | DE4217259A1 Doppelpumpe Double pump |