| Patents for F04C 14 - Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations (3,663) |
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| 07/07/1994 | DE4318933C1 Detachable power-assistance system for steering gear |
| 07/06/1994 | EP0604700A1 Method and apparatus for refrigerant recovery |
| 07/05/1994 | US5326232 Two stage pump assembly with mechanical disconnect |
| 07/01/1994 | CA2095513A1 Method and apparatus for refrigerant recovery |
| 06/15/1994 | EP0601751A1 Electric-motor in-line integrated hydraulic pump |
| 06/14/1994 | US5320501 Electric motor driven hydraulic apparatus with an integrated pump |
| 06/07/1994 | US5318416 Casing of an eccentric worm pump designed to burst at preselected pressure |
| 05/31/1994 | US5316450 Fixed cam variable delivery vane pump |
| 05/24/1994 | US5314100 Grout delivery system |
| 05/11/1994 | DE4237483A1 High pressure pump for auxiliary power steering assembly - has spring steel insert to prevent cavitation erosion arising from flow of oil |
| 05/05/1994 | DE4336892A1 Oil pressure drive for vehicle with hydraulic steering and engine cooling - has engine-driven variable delivery pump supplying steering servo and hydraulically impelled engine cooling fan via distributor valve |
| 04/26/1994 | US5306127 Fluid pump with axially adjustable gears |
| 04/19/1994 | US5303559 Method and apparatus for refrigerant recovery |
| 04/07/1994 | DE4304208C1 Vane cell pump - has blades consisting of carrier and blade section, carrier is guided by stationary parts during movement in radial direction |
| 04/05/1994 | US5299920 Fixed geometry variable displacement pump system |
| 04/03/1994 | CA2079729A1 Grooved pump chamber walls for flushing fiber deposits |
| 03/24/1994 | DE4231690A1 Tuner gear pump with outer gear rotor in housing - has outer rotor fixing, bearing, and positioning members providing movement freedom and positioning for outer rotor |
| 03/17/1994 | DE4310210A1 Hydraulic gear pump on motor with measuring main gear pair - has secondary gear pair, coacting with main one, with one pair acting as pump, and another one as motor |
| 03/08/1994 | US5292234 System for preventing cavitation in an hydraulic pump |
| 03/01/1994 | US5290153 Two stage pump assembly |
| 02/23/1994 | EP0583721A1 Method and device for portionally dividing a pasty and compressible mass, in particular soussage mince with a vane pump |
| 02/16/1994 | EP0583003A1 Fluid metering, mixing and composition control system |
| 02/09/1994 | EP0582413A1 Hydraulic vane pump with enhanced axial pressure balance and flow characteristics |
| 02/08/1994 | US5284424 Osmotic water purification pumping system with flush valve |
| 02/03/1994 | WO1994002740A1 Hydraulic positive-displacement pump |
| 02/03/1994 | DE4224973A1 Oil supply pressure control - uses multistage valve with oil filter acting as resistance and throttle |
| 02/01/1994 | US5282722 Electronic pressure control |
| 01/27/1994 | DE4224592A1 Hydraulische Verdrängerpumpe Displacement hydraulic pump |
| 01/26/1994 | EP0580558A1 Device for the control of elevating pumps in a drainage installation or similar |
| 01/11/1994 | US5277558 Constant output pressure pump |
| 01/05/1994 | EP0577064A1 Rotary pump |
| 01/04/1994 | US5275205 Valve containing coupled, rotatable elements to control fluid flow therethrough |
| 12/28/1993 | US5273408 Variable-displacement vane pump |
| 12/01/1993 | EP0567598A4 Hydraulic machine |
| 11/30/1993 | US5266018 Hydraulic vane pump with enhanced axial pressure balance and flow characteristics |
| 11/16/1993 | US5261796 Electric-motor in-line integrated hydraulic pump |
| 11/03/1993 | EP0567598A1 Hydraulic machine |
| 10/28/1993 | WO1993021443A1 Variable output internal pump |
| 10/28/1993 | WO1993021424A1 Variable displacement pump |
| 10/13/1993 | EP0565340A1 Variable output internal pump |
| 09/30/1993 | DE4308506A1 Oil pump for IC-engine lubrication feed - has internally and externally toothed rotors with switching valve to connect outlets |
| 09/30/1993 | DE4209839A1 Flow control valve for vehicle steering system - has control edge with positively and negatively chamfered areas to reduce noise emission. |
| 09/22/1993 | EP0561494A2 Moineau-type pump |
| 09/22/1993 | EP0561304A1 Inlet controlled gear pump |
| 09/22/1993 | EP0561153A1 Capacity regulating device for at least two hydrostatic variable displacement pumps |
| 09/16/1993 | WO1993018307A1 Compressor slide valve control |
| 09/16/1993 | DE4307003A1 Variable volume rotary slide pump for vehicle engine - uses pair of inclusion segments inserted between rotor and cam ring. |
| 09/15/1993 | EP0560462A2 Positive displacement pumps |
| 09/14/1993 | US5244367 Gear pump with a resilient means for biasing a side wear plate |
| 09/14/1993 | US5244358 Load sensed variable output gear pump |
| 09/14/1993 | US5243822 Hydraulic rotary pump-turbine as a torque converter |
| 09/08/1993 | EP0559582A1 Gear pump for high viscosity materials |
| 09/07/1993 | US5241826 Fixed geometry variable displacement pump system |
| 09/07/1993 | CA2089129A1 Gear pump for high viscosity material |
| 08/18/1993 | EP0555621A1 Pump arrangement |
| 08/18/1993 | EP0555374A1 Two speed gerotor motor with centrally located valve and commutator |
| 08/17/1993 | US5236319 Adjustable displacement volume, plastic rings |
| 08/17/1993 | US5236317 Gear pump valving system |
| 08/17/1993 | US5236315 Hydraulic pump for power-assisted steering system |
| 08/17/1993 | US5235821 Method and apparatus for refrigerant recovery |
| 08/11/1993 | EP0554706A1 Method and device for feeding a fluid |
| 07/22/1993 | WO1993014318A1 Compact controllable vane pump |
| 07/22/1993 | DE4201257A1 Vane cell pump with adjustable stroke ring - has piston connected to spring via bolt and stroke ring pivots about axis and is connected locks and piston and spring |
| 07/20/1993 | US5228289 Plural hydraulic pump system with unloading valve |
| 07/15/1993 | DE4200305A1 Regelbare fluegelzellenpumpe in kompakter bauweise Adjustable fluegelzellenpumpe in compact construction method |
| 07/13/1993 | US5226802 Variable-displacement vane pump |
| 07/06/1993 | US5224839 Variable delivery pump |
| 06/29/1993 | US5222886 Cheek plate for a vane pump |
| 06/24/1993 | DE4241002A1 Hydraulic rotary cell pump with adjustable throttle - uses temp. responsive control to expand gaps in coil spring windings |
| 06/09/1993 | EP0545424A1 Internal gear pump with sealings incorporated in the teeth |
| 06/02/1993 | EP0543809A1 Guided vanes hydraulic power system |
| 05/27/1993 | WO1993010354A1 Pump |
| 05/27/1993 | DE4138727A1 Peristaltic pump for perfusion of fluids in body cavities - has a hose path formed by spring loaded curved pressure pieces |
| 05/27/1993 | DE4138516A1 Pumpe Pump |
| 05/18/1993 | US5211544 For delivery of lubricating oil |
| 05/13/1993 | WO1993009349A1 Vane cell pump |
| 05/12/1993 | EP0541337A1 Electric motor driven hydraulic appartus with an integrated pump |
| 05/11/1993 | US5209648 Rotary-vane pump |
| 05/06/1993 | DE4136151A1 Rotary-vane pump - has chambers under sliding vanes connected via control-valve chamber to unit supplied |
| 05/06/1993 | DE4136150A1 Fluegelzellenpumpe Fluegelzellenpumpe |
| 05/05/1993 | CA2082038A1 Electric motor driven hydraulic apparatus with an integrated pump |
| 04/29/1993 | DE4135221A1 Vane-cell-type pump - has regulating collar on piston, with ring slot and ring groove, in front of control edge |
| 04/20/1993 | CA1316390C Regulator valve for an ink marking system |
| 03/27/1993 | CA2078084A1 Gear pump valving system |
| 03/02/1993 | US5190450 Gear pump for high viscosity materials |
| 02/24/1993 | EP0528726A1 Process and apparatus for controlling a pumping station and modular detection device for such a station |
| 02/24/1993 | EP0528254A2 Control arrangement for positive displacement pumps |
| 02/09/1993 | US5184947 Fully variable output hydraulic gear pump having an axially translatable gear |
| 02/02/1993 | US5183395 Compressor slide valve control |
| 02/02/1993 | US5183392 Combined centrifugal and undervane-type rotary hydraulic machine |
| 01/26/1993 | US5181837 Electric motor driven inline hydraulic apparatus |
| 01/26/1993 | US5181835 Hydraulic pump |
| 01/13/1993 | EP0522505A2 Variable-displacement vane pump |
| 01/12/1993 | US5178525 Variable volume type vane pump with lubricating oil reservoir |
| 01/12/1993 | US5177966 Fluid pump arrangement with flow regulation feature |
| 01/07/1993 | WO1993000514A1 Flow regulator valve |
| 01/07/1993 | DE4121074A1 External gear pump - has main drive gear fixed inside housing and driven gear adjusted by pressure differential piston action |
| 12/24/1992 | DE4120360A1 Stromregelventil Flow control valve |
| 12/23/1992 | EP0519154A1 Method for generating high fluid pressure impulses, device and use of said device as high pressure cleaner |
| 12/21/1992 | CA2071052A1 Generating high pressure pulses in liquid |