Patents
Patents for F04B 43 - Machines, pumps, or pumping installations having flexible working members (13,111)
05/1992
05/26/1992US5116203 Detecting occlusion of proximal or distal lines of an IV pump
05/26/1992US5116021 Quick-disconnect valve
05/20/1992CN2104956U Double-conduit artificial complex pump
05/20/1992CN2104955U Negative pressure type differential pressure liquid guide device
05/19/1992US5114318 Automatic-cycling heat-powered fluid pump
05/19/1992CA1300977C Cam action compensator
05/14/1992WO1992008052A1 A two-stage pump for a continuous ink jet printer
05/13/1992EP0484717A1 Hose pump
05/13/1992EP0484575A1 Device for pumping mud and for adding a dosed filtering assistance agent
05/06/1992EP0483469A1 Micropump
05/05/1992US5110270 Peristaltic pump with spring means to urge slide members and attached rollers radially outward on a rotor
05/05/1992CA1299952C Peristaltic pump cartridge
04/1992
04/30/1992DE4034437A1 High pressure pump - has valves forming sub-assemblies to facilitate removal and replacement when worn
04/30/1992DE4033671A1 Device for generating and distributing thermal energy - has two pumps combined in one unit
04/29/1992CN2103031U Automatic aspirating pump
04/28/1992US5108373 Intravenous metering device
04/28/1992US5108270 Conductive plastic fluid handling equipment
04/23/1992DE4131732A1 Unit for feeding solid suspension to dewatering device - has storage vessels emptied using compressed air or water which contain deformable membrane
04/22/1992EP0438523A4 Self-enclosed filter pumping system
04/22/1992EP0407517A4 Diaphragm pump
04/22/1992CN2102384U Simple liquid drainage device
04/22/1992CN2102383U Oil-free lubrication electric diaphragm pump
04/21/1992US5106274 Hermetic compressor
04/16/1992WO1992006299A1 Improvements in auxiliar suction dispositive, arrangement in hydraulics pump and in inlet valve
04/15/1992EP0480192A1 Double-diaphragm pump
04/15/1992EP0183823B1 Single valve diaphragm pump with decreased sensitivity to ambient conditions
04/15/1992CN2101784U Siphon liquid sucking device with corrugated hose check
04/14/1992US5104298 Diaphragm-type air pump with an efficient core
04/08/1992EP0478600A1 Improving blood flow
03/1992
03/25/1992EP0476020A1 Peristaltic pump.
03/25/1992CN2099860U Hand water pump
03/24/1992US5098262 Solution pumping system with compressible pump cassette
03/24/1992US5098261 Peristaltic pump and method for adjustable flow regulation
03/24/1992CA1297729C Pump
03/19/1992WO1992004569A1 A valve equipped with a position detector and a micropump incorporating said valve
03/19/1992DE4029251A1 Appts. producing three=dimensional pressure impacts - hamagnetic drive stages and magnetic or magnetisable particles in segments of sleeve defining vol.
03/19/1992DE4029250A1 Peristaltic radial pressure pulses in tube - produced by filling magnets in polyurethane tube wall and surrounding by driving stator, for pump
03/19/1992DE4029249A1 Appts. producing three=dimensional pressure impacts in fluid - sequentially energises circular coils with current pulses to react with magnetic or magnetisable particles in sponge material
03/17/1992US5096393 Peristaltic pump with hinged rotor support housing and adjustable tube rack
03/17/1992US5096388 Microfabricated pump
03/17/1992CA1297341C Peristaltic pump
03/11/1992EP0473616A1 Bellow-type pump with a plurality of radially arranged bellows
03/10/1992US5094820 Pump and calibration system
03/10/1992US5094594 Piezoelectric pumping device
03/05/1992DE4027989A1 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
03/05/1992DE4027920A1 High pressure aggregate for water delivery systems - makes use a membrane and seals between two cover plates
03/05/1992DE4027027A1 Leak detector for diaphragm pump - uses laminate diaphragm with evacuated internal space connected to part with contacts which close if pressure arises because of leak
03/04/1992EP0473348A1 Peristaltic pump
03/03/1992US5092878 Blood pump
03/03/1992US5092749 Fluid pump drive mechanism
03/03/1992US5092567 Pressure actuated assembly
03/03/1992US5092224 Conical rod piston
02/1992
02/26/1992CN2097294U Flexible reciprocating deep-water pump
02/26/1992CN1059016A Wholly-sealed extrusion rotary pump
02/25/1992US5090877 Misloaded iv tube detector for an iv pump
02/25/1992US5090299 Piston unit with rolling membrane
02/25/1992US5090297 All-elastomer fluid-pressure-actuatable twistors and twistor drive assemblies
02/24/1992WO1992003658A1 Misloaded iv tube detector for an iv pump
02/20/1992WO1992002306A1 Dispensing process particularly for a sealing/adhesive product
02/19/1992EP0471000A1 Enhanced pressure measurement flow control system
02/18/1992US5089018 Total heat prosthesis
02/18/1992US5088904 Transfusion pump
02/18/1992US5088901 Membrane pump with a freely oscillating metal membrane
02/18/1992US5088898 Reciprocating pump
02/18/1992US5088522 Pump hose for a peristaltic pump
02/18/1992US5088515 Valve system with removable fluid interface
02/13/1992DE4037797C1 Peristaltic pump for fluid - has stator braced in direction of rotor and adjustable by eccentric disc
02/13/1992DE4025114A1 Membrane dispenser pump with constant delivery rate - has membrane drive part with pressure chamber connected to fluid circuit contg. choke and non-return valves
02/12/1992EP0470342A1 Membrane pump
02/12/1992EP0470333A1 flexible tube for Volume displacement machine
02/11/1992CA1295511C Apparatus for transferring fluid medium
02/04/1992US5085562 Micropump having a constant output
02/04/1992US5085560 Low contamination blending and metering systems for semiconductor processing
01/1992
01/29/1992EP0468808A1 Conductive plastic fluid handling equipment
01/29/1992EP0262151B1 Filter pump head assembly
01/29/1992CN2094629U Manual fuel feeder
01/29/1992CN2094628U Liquid suction device
01/28/1992US5083908 Miniature peristaltic pump
01/28/1992US5083906 Fluid pump
01/28/1992CA2047057A1 Conductive plastic fluid handling equipment
01/23/1992WO1992000768A1 Fluid control apparatus and methods
01/21/1992US5082429 Peristaltic pump
01/14/1992US5080127 Dosing pump system
01/11/1992WO1992001160A1 Valve and micropump incorporating said valve
01/11/1992CA2065735A1 Valve and micropump incorporating said valve
01/08/1992EP0465229A1 Micropump and process for manufacturing a micropump
01/08/1992EP0464882A1 Swash-plate pump
01/08/1992CN2092614U Revolvingly driven pumps charastised by no contact between transmission component and fluid
01/07/1992US5078581 Cascade compressor
01/07/1992US5078362 Spring-biased valve for use in a positive displacement volumetic pump
01/01/1992CN2091970U Corrugated pipe pump with convex ring
01/01/1992CN2091969U Multifunctional liquid-gas sucker
01/01/1992CN2091963U 小型加油泵 Small pumps
12/1991
12/31/1991CA1293648C Pump with removable cartridges
12/29/1991CA2020030A1 Positive displacement vacuum pumps
12/24/1991US5074763 Telescopic moving equipment for driving a reciprocating pump
12/24/1991US5074757 Diaphragm pump with mechanically driven diaphragm
12/24/1991US5074756 Infusion device with disposable elements
12/24/1991US5074755 Hydraulically driven reciprocating compressor having a free-floating diaphragm
12/24/1991US5074196 Flexible gas impermeable sandwich diaphragm