| Patents for F04B 53 - Component parts, details or accessories not provided for in, or of interest apart from, groups or (19,443) |
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| 01/16/1991 | EP0407517A1 Diaphragm pump. |
| 01/15/1991 | CA1278953C Pump |
| 01/10/1991 | WO1991000428A1 Submersible motor-driven pump |
| 01/10/1991 | DE4000184C1 High pressure valve for pump - has choked-entry nozzle with seat mounted on braking ring having clamping surface |
| 01/10/1991 | DE3921549A1 Tauchmotorpumpe Submersible pump |
| 01/08/1991 | US4983105 Down hole pump |
| 01/02/1991 | CA1278602C Submersible pump with expanded foam housing |
| 12/25/1990 | US4979878 Relieved piston valve for fluid motor and fluid pump |
| 12/19/1990 | CN1010871B Radial piston pump for conveying water |
| 12/18/1990 | US4978284 Double acting simplex plunger pump |
| 12/18/1990 | US4978283 Primer valve for chop-check pump |
| 12/18/1990 | CA1277867C Lubrication pump |
| 12/15/1990 | WO1990015929A1 Improved micro-pump |
| 12/13/1990 | WO1990015247A1 Radial piston pump |
| 12/13/1990 | DE4017956A1 Radial piston pump for low viscosity oil - uses convoluted spring strips to engage valve seats |
| 12/11/1990 | US4976192 Reciprocating pump |
| 12/05/1990 | EP0400693A2 High pressure pump |
| 12/05/1990 | EP0400507A2 High pressure unit |
| 12/04/1990 | US4975027 Extreme pressure fluid sample transfer pump |
| 12/04/1990 | US4974628 Check valve cartridges with controlled pressure sealing |
| 11/27/1990 | US4972994 Operational mode conversion for pressure washer spray |
| 11/22/1990 | EP0398845A2 Cylinder head for super pressure pump |
| 11/22/1990 | EP0398209A1 Reciprocating oil pump |
| 11/07/1990 | EP0396025A1 Piston for axial piston pump |
| 11/07/1990 | EP0396008A2 Vacuum pump with suction filter |
| 11/06/1990 | US4968226 For lifting fluid through a conduit |
| 10/31/1990 | EP0395599A1 A passively actuated valve |
| 10/25/1990 | DE3912917A1 Diaphragm-type pump delivery valve - comprises plate spring pivoting on stop |
| 10/24/1990 | EP0393800A2 Valve device |
| 10/23/1990 | US4965042 Inherently flushing piston rod for a reciprocating pump |
| 10/16/1990 | US4963077 Profiled plunger for a reciprocating pump |
| 10/16/1990 | US4963075 Radial diaphragm pump |
| 10/16/1990 | US4962937 Apparatus for deflecting fluids leaking around pump shafts |
| 10/10/1990 | EP0391489A1 High pressure pump valve assembly |
| 10/10/1990 | EP0391488A2 Vented static seal assembly |
| 10/10/1990 | EP0391487A2 High pressure dynamic seal |
| 10/10/1990 | EP0205569B1 Mud pump |
| 10/09/1990 | US4961688 Pressure and suction pistion pulsation, molten alloy of tin and copper and/or lead, diaphragms, siphons |
| 10/03/1990 | EP0390298A2 Fluid pump apparatus |
| 09/26/1990 | EP0389414A1 Piston compressor |
| 09/20/1990 | DE4007832A1 Piston pump for medical purposes - incorporates chamber for sterilising piston |
| 09/20/1990 | DE3908777A1 Pump |
| 09/19/1990 | EP0388374A1 A single cylinder reciprocating pump |
| 09/19/1990 | EP0388196A1 Pressure sewer pumping system with check valve arrangement |
| 09/19/1990 | EP0388195A1 Pressure sewer system |
| 09/19/1990 | EP0387506A1 Hydraulic high-pressure pump for a brake system of a vehicle |
| 09/19/1990 | EP0245386B1 Vibratory pump |
| 09/18/1990 | CA1274222A1 Pumping unit for the filling of container in packaging machines |
| 09/12/1990 | EP0385977A1 Hydraulic pump with integrated sump and accumulator |
| 09/07/1990 | WO1990009903A1 An improved device for connecting and disconnecting hydraulic pumps |
| 08/28/1990 | US4951707 Seal for a pump valve |
| 08/28/1990 | US4951701 Combination air vent and overpressure valve |
| 08/22/1990 | EP0308468B1 Hydraulic manually-operated single-piston pump |
| 08/14/1990 | US4948351 Pressure sewer pumping system with check valve arrangement |
| 08/14/1990 | US4948349 Pump and valve apparatus |
| 08/08/1990 | EP0381039A1 Piston pump for an oral syringe |
| 08/08/1990 | EP0380777A1 Positive-displacement pump for pumping alimentary liquids |
| 08/08/1990 | EP0380576A1 Compact twin piston pump |
| 08/02/1990 | DE3902796A1 Piston pump for oral douches |
| 07/25/1990 | EP0378967A1 Piston compressor |
| 07/19/1990 | DE3901058A1 High-pressure piston pump having a high intake capacity |
| 07/17/1990 | US4941809 Valveless positive displacement metering pump |
| 07/12/1990 | WO1990007648A1 Diaphragm pump |
| 07/11/1990 | EP0377047A1 Main bearing device for motor of bent axis type axial piston pump |
| 07/11/1990 | CN1008760B Hermetically sealed rotary compressor |
| 06/29/1990 | CA2006866A1 Diaphgram pump |
| 06/27/1990 | EP0374739A1 A motor pump unit for a high-pressure cleaner |
| 06/26/1990 | US4936753 Diaphragm pump with interchangeable valves and manifolds |
| 06/14/1990 | WO1990006445A1 Non-icing quiet air-operated pump |
| 06/07/1990 | DE3840689A1 Hydraulic pump |
| 06/05/1990 | US4932005 Fluid means for data transmission |
| 06/05/1990 | US4930404 Very high pressure piston pump |
| 05/28/1990 | CA2003976A1 Non-icing quiet air-operated pump |
| 05/22/1990 | CA1269279A1 Hydraulic paint pump |
| 05/16/1990 | EP0185044B1 Polytetrafluoroethylene composite material |
| 05/16/1990 | CN1042218A 泵 Pump |
| 05/15/1990 | US4924901 In line valve |
| 05/08/1990 | US4923373 Hydraulic single piston pump for manual operation |
| 05/01/1990 | US4921409 High pressure reciprocating pump |
| 05/01/1990 | US4921408 Non-icing quiet air-operated pump |
| 05/01/1990 | US4920863 Plunger pump |
| 04/25/1990 | EP0365420A1 Dual-capacity mechanism driven by pressurised fluid, and its use in a closed circuit |
| 04/18/1990 | EP0363788A2 Pump unit |
| 04/17/1990 | CA1267835A1 Oil well downhole liquid injection assembly |
| 04/11/1990 | EP0363088A1 Pump |
| 04/10/1990 | US4915595 Valve/piston cartridge and rotor bearing pre-load for a radial piston pump |
| 04/10/1990 | US4915591 Reciprocating pump and control using outlet valve position sensors |
| 04/05/1990 | WO1990003519A1 Pump control method and poppet valve therefor |
| 04/04/1990 | EP0361927A1 Pump control method and poppet valve therefor |
| 04/03/1990 | US4913628 Radial piston pump for pumping water |
| 04/03/1990 | US4913001 Piston assembly for compressors |
| 03/14/1990 | EP0358429A2 Multimodal displacement pump and dissolution system for same |
| 03/06/1990 | US4906167 Inherently flushing piston rod for a reciprocating pump |
| 02/14/1990 | EP0354484A1 Dosing pump |
| 02/08/1990 | DE3546581C2 Pump, in particular for window-washing systems on motor vehicles |
| 01/31/1990 | EP0353133A1 Reciprocating-piston pump, especially a manually actuated one |
| 01/23/1990 | US4895499 Outlet valve assembly for paint sprayer |
| 01/09/1990 | US4892468 Hydraulic pump |
| 01/03/1990 | EP0348567A1 Coupling and seal assembly |
| 12/28/1989 | WO1989012750A1 Improved high pressure reciprocating pump |