| Patents for F04C 14 - Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations (3,663) |
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| 11/20/1990 | US4971528 Lube oil pump with relief valve |
| 11/20/1990 | US4971527 Regulator valve for an ink marking system |
| 11/07/1990 | EP0258393A4 Adhesive dispensing pump control system and pump |
| 10/25/1990 | DE3913414A1 Variable-delivery rotary-vane pump - has compression zone in sections supplying separate hydraulic circuits |
| 10/25/1990 | DE3913412A1 Hydraulic pump for automotive transmission - is driven via gear pump whose output decreases with transmission ratio |
| 10/18/1990 | DE3912277A1 Hydraulic machine suitable for regulating circuit - has revolution rate measurement arrangement with pulse generator and sensor inside requiring no external elements |
| 09/26/1990 | EP0323979A4 Rotary machine |
| 09/25/1990 | US4958992 Variable capacity swivelling vane pump |
| 09/12/1990 | EP0386738A2 Variable displacement pump or motor and neutral centering mechanism therefor |
| 09/06/1990 | DE3907053A1 Oil-hydraulic sustained-action brake for braking vehicles |
| 09/05/1990 | EP0385211A1 Rotary hydraulic machine |
| 08/21/1990 | US4950137 Radial piston machine having pivoted control means engaging cam ring |
| 08/09/1990 | WO1990008900A1 Split vane for vane pumps or motors |
| 08/01/1990 | CN1009024B Axial variable displacement pump or motor |
| 07/31/1990 | US4944662 Reversible geroter pump with pivoting carrier unidirectional flow |
| 07/17/1990 | US4941437 Automotive radiator cooling system |
| 07/10/1990 | US4940394 Adjustable wearplates rotary pump |
| 07/03/1990 | US4938316 Lubricating device |
| 06/27/1990 | CN1043366A Rotary positive-displacement pump or motor and usage thereof |
| 06/19/1990 | US4934252 Variable displacement pump or motor and neutral centering mechanism therefor |
| 06/12/1990 | US4932504 Hydraulic pumps or motors and hydrostatic transmitting systems |
| 05/15/1990 | US4925370 Electric motor driven pump with an automatic transmission |
| 05/10/1990 | DE3837599A1 Gear pump having two pairs of gear wheels arranged next to one another in the pump casing |
| 05/08/1990 | US4922872 Engine brake system |
| 05/08/1990 | US4922804 Variable speed hydraulic unit |
| 04/03/1990 | US4913102 Control device for hydraulically driven cooling fan of vehicle engine having relief passage for cold start |
| 03/01/1990 | DE3925249A1 Pump arrangement with pressure control valve - incorporates relief piston moved at low pressure level |
| 02/27/1990 | US4904162 Fuel supplying pump |
| 02/20/1990 | US4902202 Variable discharge gear pump with energy recovery |
| 01/25/1990 | DE3824293A1 Method for adjusting desired values in regulated pump systems |
| 12/27/1989 | EP0149667B1 Plural hydraulic pump system with automatic displacement control |
| 12/19/1989 | US4887956 Variable output oil pump |
| 11/23/1989 | EP0342346A2 Gear pump |
| 11/08/1989 | CN1005742B Rotary fluid pressure device having free-wheeling capability |
| 11/02/1989 | EP0339770A2 Ink control supply assembly for an ink jet printer |
| 11/02/1989 | EP0339327A1 Conveying device for pasty products |
| 10/26/1989 | DE3812412A1 Pump drive for fixed displacement pumps with mobile drive |
| 10/26/1989 | DE3812411A1 Series pump-step arrangement with controllable useful delivery rate for mobile use |
| 10/25/1989 | EP0225338B1 Variable capacity pump |
| 10/24/1989 | CA1262483A1 Method and device for pumping a highly viscous liquid |
| 10/10/1989 | US4872536 Hydraulic pumps or motors and hydrostatic transmitting systems |
| 10/05/1989 | DE3909159A1 Control device for positive-displacement pumps |
| 09/26/1989 | US4869648 Vane type rotary fuel pump |
| 09/19/1989 | US4867871 Sewage system discharge pump module |
| 08/30/1989 | EP0330315A2 Gerotor pumps |
| 08/15/1989 | US4856427 Ink metering assembly |
| 07/25/1989 | US4851723 Coolant pump system for variable speed generators |
| 07/25/1989 | US4850814 Hydraulic gear pump |
| 07/25/1989 | US4850813 Self unloading pump circuit for an automatic transmission having multiple pressure supply pumps |
| 07/19/1989 | EP0323979A1 Rotary machine |
| 07/06/1989 | DE3842886A1 Vacuum pump stand |
| 06/29/1989 | DE3840909A1 Gear pump with delivery rate control |
| 06/13/1989 | US4838767 Balanced vane type oil pumps |
| 06/08/1989 | DE3832280A1 Electrically operated fuel pump |
| 05/09/1989 | US4828462 Pressure detecting system for a hydraulic device |
| 05/09/1989 | CA1253771A1 Hydraulic pump |
| 04/25/1989 | US4824331 Variable discharge gear pump with energy recovery |
| 04/04/1989 | US4818196 Variable capacity vane-type motor having a control channel selectively communicating with the work chamber |
| 03/15/1989 | EP0221062B1 Regulation device for a positive displacement pump, particularly a vane-type pump |
| 03/08/1989 | EP0305877A2 Apparatus for use in a power steering system |
| 03/08/1989 | EP0235150B1 Vane cell pump |
| 02/23/1989 | DE3726800A1 Fluegelzellenmaschine Fluegelzellenmaschine |
| 02/21/1989 | US4806085 Rotary hydraulic piston motor with fluid path in pistons for inlet pressure |
| 02/02/1989 | DE3824398A1 Lubricating oil pump |
| 02/02/1989 | DE3814750A1 Device for driving a lubricant pump of an internal combustion engine |
| 02/01/1989 | EP0301886A2 Variable discharge gear pump with energy recovery |
| 01/31/1989 | US4800771 Drive assembly with overspeed brake |
| 01/25/1989 | EP0300293A2 Variable speed hydraulic unit |
| 01/25/1989 | EP0300175A2 Rotary-piston machine |
| 01/25/1989 | CN1030630A Dring device with overspeed brake |
| 01/10/1989 | US4797075 Overspeed protective gear box for a well pump |
| 12/27/1988 | US4793138 Hydrostatic drive with radially-nested radial-roller pump and motor having common displacement control ring |
| 12/20/1988 | US4792292 Ink pump system |
| 12/14/1988 | EP0294399A1 Swivelling vane pump. |
| 12/07/1988 | EP0293585A1 Reversible gear machine (pump or motor) |
| 12/06/1988 | US4789308 Self-contained electric fuel pump with output pressure regulation |
| 12/06/1988 | CA1245911A1 Steering assistance pump |
| 11/29/1988 | US4787822 Volume control for multi-nozzle rotary pump filling systems |
| 11/29/1988 | US4787332 Adhesive dispensing pump control system |
| 11/23/1988 | EP0291625A1 Plural hydraulic pump system with automatic displacement control |
| 11/22/1988 | CA1245100A1 Rotary vane pump |
| 11/08/1988 | CA1244317A1 Demand responsive flow regulator valve |
| 10/25/1988 | US4780069 Directlly actuated vane-type pump |
| 10/18/1988 | US4778361 Variable output gerotor pump |
| 09/28/1988 | EP0284241A2 Vane pump |
| 09/28/1988 | EP0284226A2 Variable output oil pump |
| 09/22/1988 | WO1988007126A1 Drive assembly with overspeed brake |
| 09/13/1988 | US4770616 Variable vane-type pump |
| 09/13/1988 | US4770612 Steering power-assistance arrangement |
| 09/07/1988 | EP0281369A2 Vane type variable displacement motor |
| 09/06/1988 | US4768605 Apparatus for use in a power steering system |
| 08/30/1988 | US4767292 Electrical commutation apparatus |
| 08/30/1988 | CA1241214A1 Control system and method for controllable output type hydraulic fluid pump of automatic transmission providing decreased pump output in association with the engine starting condition |
| 08/25/1988 | DE3704921A1 Radial piston pump motor with variable working volume |
| 08/03/1988 | EP0276680A2 Two-speed valve in-star motor |
| 07/19/1988 | US4758137 Vane type variable displacement motor |
| 06/30/1988 | WO1988003229A3 Swivelling impeller pump |
| 06/21/1988 | US4752195 Rotary vane type of pump with elongated damping chambers |
| 06/14/1988 | US4750867 Regulating pump |
| 05/24/1988 | US4746276 Gear pump having conditional dry valve closure structure |