| 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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| 07/08/1992 | EP0486556A4 Pulseless piston pump |
| 07/07/1992 | US5127807 Ultra high pressure field end for a reciprocating pump |
| 07/02/1992 | DE4041807A1 High pressure hydraulic pump e.g. for water milling - has single valve plate with diaphragm-limiting surfaces at each end |
| 07/01/1992 | EP0492363A1 Suction and/or exhaust valve for a metering or spray pump for liquids, products with low viscosity and pasty products |
| 06/30/1992 | US5125808 Hydraulic pump apparatus |
| 06/25/1992 | WO1992010678A1 Portable fluid pumping device |
| 06/24/1992 | EP0491026A1 Valve and micropump incorporating said valve. |
| 06/23/1992 | US5123819 Pressure fluid pumping device with a reciprocating piston pump |
| 06/22/1992 | CA2058373A1 Suction and/or discharge valve for a metering and spray pump for dispensing liquid, low-viscosity and pasty substances |
| 06/11/1992 | DE4140015A1 System for production of pulsating fluid flow - has pump and two-part heat exchanger with tubular winding |
| 06/11/1992 | DE4038613A1 Multicylinder plunger pump - has open connection between pressure chambers of all cylinders |
| 06/09/1992 | US5120434 Filter for intank pump |
| 06/09/1992 | US5120203 Universal plunger for oil well pumps |
| 06/04/1992 | DE4037899A1 Cleaning device for well shaft - includes perforated or slotted well tube with sealed treatment chamber and pressure pump |
| 06/02/1992 | CA1302162C2 Compact twin piston pump |
| 05/27/1992 | EP0486556A1 Pulseless piston pump. |
| 05/26/1992 | US5116206 Portable fluid pumping device |
| 05/26/1992 | CA1301546C2 Compact twin piston pump |
| 05/26/1992 | CA1301545C2 Compact twin piston pump |
| 05/19/1992 | US5113931 Heat transfer apparatus |
| 05/14/1992 | DE4035835A1 Electromagnetically operated piston pump esp. for dosed delivery of fuel to burner - has magnetic coil and armature and with piston arranged to move in cylinder positioned in housing |
| 05/08/1992 | CA2039943A1 Sucker rod actuated intake valve assembly for insert subsurface reciprocating pumps |
| 05/06/1992 | EP0484307A1 A valve assembly |
| 05/06/1992 | EP0484192A1 Hydraulic pump |
| 05/06/1992 | EP0483235A1 Combination air vent and overpressure valve |
| 05/05/1992 | US5110463 Noncaking, pump with wear resistant valve |
| 05/05/1992 | US5110267 Positive-displacement pump for pumping alimentary liquids |
| 05/05/1992 | US5109666 Solid fuel combustion device and a compressor |
| 04/30/1992 | DE4034437A1 High pressure pump - has valves forming sub-assemblies to facilitate removal and replacement when worn |
| 04/29/1992 | EP0483097A1 Zero clearance anti-extrusion rings for containment of PTFE packing |
| 04/29/1992 | EP0482378A1 Aircooler for hydraulic oil pumps |
| 04/28/1992 | US5108373 Intravenous metering device |
| 04/28/1992 | CA1299442C Pump for high viscosity substances |
| 04/22/1992 | EP0481473A2 Piston, method of making the piston and piston and cylinder unit comprising the piston, and a door closer and method of making same |
| 04/22/1992 | EP0407517A4 Diaphragm pump |
| 04/16/1992 | WO1992006299A1 Improvements in auxiliar suction dispositive, arrangement in hydraulics pump and in inlet valve |
| 04/16/1992 | DE4128252A1 Intake valve for insert subsurface reciprocating pump |
| 04/15/1992 | EP0480718A2 Front-discharge fluid end for reciprocating pump |
| 04/15/1992 | EP0183823B1 Single valve diaphragm pump with decreased sensitivity to ambient conditions |
| 04/14/1992 | US5104301 Subsurface well pump |
| 04/11/1992 | CA2053095A1 Front-discharge fluid end for reciprocating pump |
| 04/09/1992 | DE4039926A1 Axial-flow pump with pistons actuated by swahs plate |
| 04/07/1992 | US5102312 Pump head |
| 04/03/1992 | WO1992006298A2 High pressure pump seal |
| 04/03/1992 | CA2093226A1 High pressure pump seal |
| 03/31/1992 | US5100305 Reciprocating piston pump |
| 03/27/1992 | CA2050009A1 Maximum flow single plug retention valve |
| 03/25/1992 | EP0477043A1 Self-primping hydraulic pump with valves |
| 03/25/1992 | EP0476450A1 Axial piston pump, particularly for water high-pressure cleaner |
| 03/19/1992 | WO1992004543A1 A displacement pump as well as a pump assembly comprising two displacement pumps |
| 03/19/1992 | DE4029295A1 Externally pressurised sealing sleeve for reciprocating piston - has sealing sleeve bore dia., forming clearance seal with piston, increasing between its front and rear ends |
| 03/10/1992 | US5094599 Radial piston pump, in particular for automotive vehicle brake systems with anti-lock control |
| 03/10/1992 | US5094428 Passively actuated valve |
| 03/10/1992 | US5094291 Heat transfer apparatus |
| 03/10/1992 | US5094150 Pump piston for axial piston pumps |
| 03/05/1992 | DE4027989A1 Flexible diaphragm micro-pump esp. for electrically insulating liq. - has micro-mechanical structure with pumping chamber of defined vol. between alternately opened tongue or paddle valves |
| 03/05/1992 | DE4027920A1 High pressure aggregate for water delivery systems - makes use a membrane and seals between two cover plates |
| 03/03/1992 | US5092744 Increasing the pressure of hydraulic fluid |
| 03/03/1992 | US5092609 High-pressure sealing device between two elements in relative motion |
| 02/26/1992 | EP0472509A1 A method and a device for automatic circulation in a waste water pump station |
| 02/18/1992 | US5088902 Piston type metering pump |
| 02/18/1992 | US5088638 Method for making sucker rods |
| 02/11/1992 | US5087179 Filter attachment for gear pump |
| 02/04/1992 | US5084964 Aluminum die casting |
| 01/30/1992 | DE4124290A1 Pumping for hot erosive sludges - has diaphragm pump in vertical pipe and heat exchanging medium around it |
| 01/30/1992 | DE4102666A1 Sintered aluminium oxide mouldings - contg. alumina, iron oxide and chromium oxide, useful as pistons or rings in water pumps |
| 01/29/1992 | EP0468834A1 Hydraulic alternating piston pump |
| 01/29/1992 | EP0468833A1 Hydraulic reciprocating piston pump |
| 01/25/1992 | CA2047055A1 Pump system |
| 01/23/1992 | WO1992001158A1 Device for conveying dense substances |
| 01/22/1992 | EP0467030A2 Housing arrangement for fluid pump and tank |
| 01/22/1992 | CN1058075A Packing for piston and valve machine and machine applying same |
| 01/19/1992 | CA2043101A1 Housing arrangement for a fluid pump and tank |
| 01/16/1992 | DE4104693A1 Vorrichtung zur foerderung von dickstoffen Apparatus for foerderung of thick materials |
| 01/15/1992 | EP0466561A1 Hydraulic machine with rotating cylinder block |
| 01/11/1992 | WO1992001160A1 Valve and micropump incorporating said valve |
| 01/11/1992 | CA2065735A1 Valve and micropump incorporating said valve |
| 01/08/1992 | EP0465229A1 Micropump and process for manufacturing a micropump |
| 01/08/1992 | EP0464915A1 Slurry pump valve |
| 01/08/1992 | EP0464229A1 Portable high pressure cleaning device |
| 01/08/1992 | EP0464165A1 Ultrahigh pressure plunger pump. |
| 01/07/1992 | US5078580 Plural-stage gas compressor |
| 01/02/1992 | EP0463662A1 Packing for piston and valve machine and a machine applying same |
| 12/31/1991 | US5076150 Piston assembly with wear resistant piston ring lands |
| 12/30/1991 | WO1992000455A1 Radial piston fluid machine and/or adjustable rotor |
| 12/27/1991 | EP0462386A1 Dual-acting, reciprocating piston pump |
| 12/24/1991 | CA1293478C Non throttling discharge pump assembly |
| 12/17/1991 | US5073096 Front-discharge fluid end for reciprocating pump |
| 12/12/1991 | DE4018153A1 Hydraulic fluid pump - has pressure value which is controlled by spring assembly |
| 12/10/1991 | US5071325 Combination primer and mixture enrichment device |
| 12/05/1991 | DE4113549A1 Frame for fluid filter with low mechanical wear characteristics - used with pump, for supporting filter on tank base, preventing filter damage by vibration |
| 12/03/1991 | CA1292640C Valveless positive displacement metering pump |
| 11/27/1991 | CN1056559A Piston assembly |
| 11/26/1991 | US5067882 Dual-acting, reciprocating piston pump |
| 11/19/1991 | CA1292147C Valve element for use in pumps for handling fluids containing abrasivematerials |
| 11/13/1991 | EP0456540A1 Dosingpump |
| 11/12/1991 | US5064354 High pressure fluid pump |
| 11/12/1991 | US5064350 Pump station |
| 11/06/1991 | EP0455511A2 A piston assembly |
| 11/05/1991 | US5062480 Self actuated intake valve assembly for insert subsurface reciprocating pumps |