Patents
Patents for F04B 43 - Machines, pumps, or pumping installations having flexible working members (13,111)
05/1988
05/24/1988US4746279 Hose pump
05/24/1988US4745846 Devices which take in and expel fluid by a chamber which may border a coned ring
05/11/1988EP0267041A2 Diaphragm
05/05/1988DE3735816A1 Pump system for dispensing pressurised fluid
05/04/1988EP0266053A2 Downhole inflatable packer pump and testing apparatus
05/04/1988EP0266036A2 Pressure limiter for a downhole pump and testing apparatus
05/03/1988US4741678 Pulsatile pump
04/1988
04/28/1988DE3635315A1 High-pressure pump with long-stroke diaphragm
04/27/1988CN87211965U Thin plate relief mechanism of diaphram air compressor
04/26/1988US4740139 Failure sensing device for a diaphragm pump
04/19/1988US4738598 Metering pump with annular elements
04/12/1988US4737083 Diaphragm pump with an elastic filter disk
04/07/1988DE3633173A1 Discharging device
04/07/1988DE3633053A1 Unit with a chamber bounded by at least one conical ring
04/06/1988EP0262151A1 Filter pump head assembly.
04/06/1988CN87210639U Horizontal double-full-sac water supply installation
04/05/1988US4735558 Peristaltic pump latching mechanism
04/05/1988US4735557 Pump for conveying a viscous medium
04/05/1988US4735553 Straight peristaltic pump for conveying concrete or the like
04/05/1988CA1234720A1 Dual diaphragm pump
03/1988
03/31/1988DE3632717A1 Unit with a diaphragm
03/29/1988CA1234524A1 Suction pump
03/23/1988EP0260464A1 Dosing pump
03/23/1988EP0260463A1 Dosing pump
03/23/1988EP0187735B1 Displacement pump
03/22/1988US4732547 Apparatus for impelling liquid
03/22/1988US4732191 Thermal pumping system for liquid products
03/16/1988EP0259464A1 Method and system for infiltration detection using pressure measurment.
03/15/1988US4730999 Negative pressure supply apparatus for automobiles
03/15/1988US4730993 Squeeze pump
03/15/1988US4730704 Lubricating oil supply system for industrial engines
03/15/1988CA1234022A1 Actuator valve
03/09/1988EP0258541A2 Pneumatic pumping device
03/09/1988EP0258424A1 Intravenous line valving system.
03/08/1988US4729430 Pressure limiter for a downhole pump and testing apparatus
03/08/1988CA1233602A1 Fluid dispensing device
03/01/1988US4728267 Fluid driven reciprocating pump
03/01/1988US4728265 Peristaltic pump with cam action compensator
03/01/1988CA1233492A1 Apparatus for pumping fluent solid material
03/01/1988CA1233363A1 Single valve diaphragm pump with decreased sensitivity to ambient conditions
03/01/1988CA1233362A1 Peristaltic pump
02/1988
02/23/1988US4726745 Portable fluid pumping device
02/23/1988CA1233069A1 Infusion pump system
02/16/1988US4725205 Peristaltic pump with cam action compensator
02/11/1988WO1987007683A3 Electromagnetic diaphragm pump
02/10/1988CN86208149U Positive displacement pump with shell chamber
02/02/1988US4722230 Pressure gauge for high pressure flow through diaphragm pump
02/02/1988CA1232167A1 Fluid pumping device for use with a fluid pump
01/1988
01/28/1988DE3724603A1 Diaphragm fuel pump
01/28/1988DE3621766A1 Electromagnetic pump
01/27/1988EP0254450A2 Hydraulic paint pump
01/20/1988EP0252972A1 A pump arrangement, particularly for pumping water from deep wells
01/19/1988US4720249 Peristaltic pump with enhanced tube loading features
01/12/1988CA1231269A2 Air-operated diaphragm pump and a valve arrangement therefor
01/05/1988US4717276 End cap structure for attaching paint sleeve to roller
12/1987
12/29/1987US4715786 Control method and apparatus for peristaltic fluid pump
12/29/1987US4715435 Dual pump for two separate fluids with means for heat exchange between the fluids
12/23/1987EP0250026A2 Improved pumping device, particularly suitable for compressing fluids on deep sea-bottoms
12/23/1987EP0249655A1 Combined complex plant of diaphragm pumps
12/17/1987WO1987007683A2 Electromagnetic diaphragm pump
12/17/1987DE3719939A1 Electromagnetic diaphragm pump
12/15/1987US4712381 Fluid handling elements and combustion engines
12/12/1987CN86210607U Dual purpose diaphragm type pump
12/09/1987EP0248514A1 System and method for dispensing metered quantities of a fluid
12/08/1987CA1230008A1 Fluid driven pump with one-way valve in fluid inlet
12/03/1987WO1987007218A1 Piezoelectrically operated fluid pump
12/03/1987WO1987007217A1 Ink writing head with piezoelectrically excitable membrane
12/03/1987DE3618106A1 Piezoelektrisch betriebene fluidpumpe Piezoelectric driven fluid pump
12/02/1987EP0247459A1 Pressure-feeding apparatus
12/02/1987EP0176550B1 Peristaltic pump
12/02/1987CN86108797A Pressure-feeding apparatus
12/01/1987US4710109 Diaphragm pumps with improved structural cooling and maintenance
12/01/1987CA1229831A1 Inflatable air pump and method for making an air pump
11/1987
11/26/1987DE3700931A1 Unit through which a fluid flows, designed for pressures up to several thousand bars
11/26/1987DE3604306A1 Multiple diaphragm reciprocating pump
11/25/1987CN87200265U 电磁输液泵 Electromagnetic infusion pump
11/24/1987US4708604 Pressure surface for a peristaltic pump
11/24/1987US4708601 Dual diaphragm pump
11/24/1987US4708600 Piezoelectric fluid pumping apparatus
11/19/1987WO1987005225A3 Pressure-measurement flow control system
11/19/1987EP0245386A1 Vibratory pump.
11/17/1987US4707315 Tapering, walls, hermetic sealing, heat insulation, polyvinyl chloride, plastisols, curing
11/17/1987US4706746 Downhole inflatable packer pump and testing apparatus
11/11/1987CN86105141A Diaphragm pump
11/10/1987US4705464 Medicine pump
11/10/1987US4705462 Process and device for improving working of liquid pumps
11/10/1987US4705461 Two-component metering pump
11/10/1987US4705458 Fluid operated pump
11/04/1987EP0174309B1 A pump for pumping corrosive fluids
10/1987
10/27/1987US4702679 Peristaltic pump
10/22/1987WO1987006306A1 Filter pump head assembly
10/22/1987DE3633002A1 High-pressure unit with elements that are resilient in the axial direction, and which is suitable for non-lubricating media
10/21/1987EP0242253A1 Disposable dispenser pump for liquid and pasty products
10/21/1987EP0242077A2 A peristaltic pump
10/21/1987EP0241489A1 Liquid metering device
10/20/1987US4701113 Pump arrangement which includes a working chamber which is bordered by a coned ring with a seal lip on the inner face of the coned ring
10/20/1987US4701107 Two stage pump sampler
10/15/1987DE3710013A1 Diaphragm positive-displacement pump, in particular for abrasive, corrosive liquids with suspended particles, or the like
10/08/1987WO1987005974A1 Two stage pump sampler
10/07/1987EP0239769A2 Pressure-regulating peristaltic pump