| Patents for F04B 9 - Piston machines or pumps characterised by the driving or driven means to or from their working members (9,236) |
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| 04/01/1992 | CN1016086B Vertical reciprocating pump |
| 03/31/1992 | US5100305 Reciprocating piston pump |
| 03/31/1992 | US5100027 Dispensing unit for at least one product, a cosmetic product in particular, in cream, liquid or powder form |
| 03/25/1992 | EP0476616A1 Control for piston pumps |
| 03/25/1992 | CN2099857U Hand starting vacuum automatic oil pump |
| 03/25/1992 | CN2099856U Liquid pump |
| 03/25/1992 | CN2099855U Three-way siphon pump |
| 03/25/1992 | CN2099854U Bidirectional plunger lubricating pump |
| 03/24/1992 | CA1297729C Pump |
| 03/19/1992 | WO1992004584A1 Heat pump system |
| 03/19/1992 | WO1992004543A1 A displacement pump as well as a pump assembly comprising two displacement pumps |
| 03/19/1992 | CA2090467A1 Heat pump system |
| 03/17/1992 | US5096094 Manual pump pre-orientable on the neck of a container |
| 03/11/1992 | CN2098568U Gear-driven automotive air compressor with clutch |
| 03/10/1992 | US5094753 Disposable extraction cartridge |
| 03/10/1992 | US5094596 High pressure piston pump for fluent materials |
| 03/10/1992 | CA1297080C Single-acting, gas-operated pump |
| 03/07/1992 | WO1992004128A1 Spray gun |
| 03/07/1992 | CA2090461A1 Spray pump |
| 03/05/1992 | DE4027920A1 High pressure aggregate for water delivery systems - makes use a membrane and seals between two cover plates |
| 03/03/1992 | US5092878 Blood pump |
| 03/03/1992 | US5092749 Fluid pump drive mechanism |
| 03/03/1992 | US5092746 Air-operated lubricant pump |
| 03/03/1992 | US5092745 Automatic pressure-driven compressor |
| 03/03/1992 | US5092744 Increasing the pressure of hydraulic fluid |
| 03/03/1992 | US5092743 Pneumatically controlled pump |
| 03/01/1992 | CA2048918A1 Air brush set |
| 02/26/1992 | CN2097290U Hand liquid pump |
| 02/26/1992 | CN2097289U Man-powered compact fast high-pressure inflator |
| 02/20/1992 | WO1992002713A1 Reciprocating drive apparatus |
| 02/19/1992 | CN2096654U Multipurpose hand liquid suction |
| 02/19/1992 | CN2096653U Hand plunger vacuum suction |
| 02/19/1992 | CN2096652U Two-way four pore hydraulic solidify pump |
| 02/18/1992 | US5088903 Compressor, spray apparatus using the compressor, and air brush for the spray apparatus |
| 02/18/1992 | US5088902 Piston type metering pump |
| 02/13/1992 | DE4037797C1 Peristaltic pump for fluid - has stator braced in direction of rotor and adjustable by eccentric disc |
| 02/12/1992 | CN2095950U Automatic siphon oil pump |
| 02/06/1992 | DE4115169A1 Variable stroke piston pump - has mechanism to vary pump stroke when pump is operating |
| 02/04/1992 | US5085560 Low contamination blending and metering systems for semiconductor processing |
| 01/28/1992 | US5083906 Fluid pump |
| 01/15/1992 | EP0466291A2 Apparatus and method for supercritical fluid extraction |
| 01/15/1992 | EP0465474A1 Control arrangement for a two-cylinder pump for thick materials. |
| 01/15/1992 | CN2093246U Hand-operated oil pump |
| 01/14/1992 | US5080563 Fuel pumping apparatus |
| 01/08/1992 | EP0465242A1 Method and apparatus for producing compressed air |
| 01/08/1992 | EP0464229A1 Portable high pressure cleaning device |
| 01/08/1992 | CN2092612U Mini muscle-power pumps with the function of illuminating |
| 01/08/1992 | CN1057705A Manual deep well pumps |
| 01/07/1992 | US5078580 Plural-stage gas compressor |
| 01/04/1992 | WO1992001154A1 Method of and device for providing compressed air and water pumping device using air thus compressed |
| 01/01/1992 | CN2091965U Straight-through hand displacement pump |
| 01/01/1992 | CN2091964U Wobble pump with changeable output |
| 01/01/1992 | CN2091963U 小型加油泵 Small pumps |
| 12/31/1991 | US5076769 Double acting pump |
| 12/26/1991 | WO1991019676A1 Reverse osmosis system with cycled pressure intensifiers |
| 12/25/1991 | CN2091367U High-pressure mini-inflator |
| 12/24/1991 | CA1293478C Non throttling discharge pump assembly |
| 12/18/1991 | EP0461943A2 Compression device, especially for filling a tank under pressure |
| 12/18/1991 | EP0461808A2 Pump apparatus |
| 12/18/1991 | CN2090883U Hand reciprocating pump |
| 12/18/1991 | CN2090882U Plastic piston for pump |
| 12/17/1991 | US5073343 Control system for blood analysis, colorimetric, electrical re sistance, cams, |
| 12/17/1991 | US5073094 Compression pump-catheter system |
| 12/12/1991 | WO1991019094A1 Valve porting for rotating barrel ram pump |
| 12/11/1991 | CN2090438U Reciprocating pump |
| 12/10/1991 | US5071326 Double piston portioning apparatus |
| 12/10/1991 | US5071325 Combination primer and mixture enrichment device |
| 12/02/1991 | CA2042891A1 High pressure piston pump for fluent materials |
| 11/27/1991 | EP0458114A1 Radial piston pump |
| 11/27/1991 | CN2089535U General tool pump |
| 11/23/1991 | WO1991018188A1 Rotary machine |
| 11/23/1991 | CA2083517A1 Rotary machine |
| 11/19/1991 | US5066203 Apparatus for pneumatically discharging concrete |
| 11/14/1991 | WO1991017064A1 Bicycle operated air pump |
| 11/13/1991 | EP0456387A1 Fluid pump drive mechanism |
| 11/13/1991 | CN2088608U Double circuit liquid flow guiding device |
| 11/12/1991 | US5064353 Pressure responsive linear motor driven pump |
| 11/12/1991 | US5064350 Pump station |
| 11/12/1991 | US5063792 Rotary/reciprocatory motion converter |
| 11/08/1991 | CA2041738A1 Fluid pump drive mechanism |
| 11/06/1991 | CN2088173U Multi-function pump |
| 11/06/1991 | CN2088172U Liquid guiding device |
| 10/30/1991 | CN2087702U Double-cylinder pedal water pump |
| 10/30/1991 | CN2087701U Gun type oil lead device |
| 10/30/1991 | CN2087700U Hand oil pump |
| 10/30/1991 | CN2087699U Jacketed cylinder double-piston liquid suction and injection device |
| 10/30/1991 | CN2087698U Single-tube double-jointed multifunctional inflater |
| 10/29/1991 | CA1291368C Hybrid high pressure pump for gas-liquid permeameters |
| 10/23/1991 | CN2087245U Petrodrum with hand-operated means for pumping |
| 10/23/1991 | CN2087244U Box type ball pump |
| 10/23/1991 | CN1055583A Manual air-hydraulic press |
| 10/16/1991 | EP0451942A1 Double-acting positive displacement pump |
| 10/16/1991 | CN2086806U Pedal high-pressure inflator with 3 cavities |
| 10/15/1991 | CA1290799C Power transmission |
| 10/13/1991 | CA2039856A1 Well pumping systems |
| 10/12/1991 | CA2037591A1 Double-acting positive displacement pump |
| 10/09/1991 | EP0450257A1 Hydraulic machine capable of releasing the pressure of one liquid and simultaneously pumping another liquid |
| 10/09/1991 | CN2086324U Plastic hydraulic pump |
| 10/09/1991 | CN2086323U Pumping type beam unit |
| 10/09/1991 | CN2086322U Thumb pressure device |