| Patents for F04B 7 - Piston machines or pumps characterised by having positively-driven valving (2,226) |
|---|
| 08/12/1997 | US5655891 For a viscous rubber-like material |
| 08/12/1997 | US5655779 Resilient rectangular lip seal arrangement |
| 07/30/1997 | EP0786595A2 Method and apparatus for pressure processing a pumpable substance |
| 07/23/1997 | EP0785075A2 Recovery device equipped with tube pump |
| 07/15/1997 | US5647575 Volumetric shaft/valve |
| 06/18/1997 | CN2256470Y Low speed large torque radial plunger type hydraulic motor |
| 06/17/1997 | US5640181 Tube pump mechanism and ink jet recording apparatus equipped therewith |
| 06/17/1997 | US5639220 Pump with inlet and outlet simultaneously exposed to pump chamber and method of operating same |
| 06/10/1997 | US5637208 Solvent pumping system for chromatography with switching-valve |
| 06/04/1997 | EP0776424A1 Direct action fluid motor and injection pump |
| 05/27/1997 | US5632606 For pumping fluids from a fluid source to a fluid sink |
| 05/20/1997 | US5630709 Pump having pistons and valves made of electroactive actuators |
| 05/13/1997 | US5628624 Pump barrel valve assembly including seal/actuator element |
| 05/09/1997 | WO1997010435A3 Fluid pump without non-return valves |
| 05/07/1997 | EP0710327B1 High pressure pump system and method of operation thereof |
| 04/08/1997 | US5619232 Maintenance station of ink jet printer and cap and pump included therein |
| 04/08/1997 | US5618163 Volumetric pump shift bottoming detector |
| 04/01/1997 | US5616014 Power grease pump |
| 03/27/1997 | WO1997011275A1 Pump and method for manufacturing the pump |
| 03/20/1997 | WO1997010435A2 Fluid pump without non-return valves |
| 03/19/1997 | EP0681672B1 Process for conveying thick matter containing preshredded scrap metal or similar solids |
| 03/12/1997 | EP0708721B1 Hydraulic braking system with skid and drive slip control |
| 03/06/1997 | DE19611567A1 Piston pump for thick liquid medium |
| 02/27/1997 | DE19531358A1 Pump for viscous materials, especially concrete |
| 02/18/1997 | US5603354 Volumetric pump/valve |
| 02/12/1997 | EP0757756A1 Thick matter pump |
| 02/11/1997 | US5601421 Valveless double acting positive displacement fluid transfer device |
| 01/07/1997 | US5591310 Distillation |
| 01/02/1997 | DE19534378C1 Fluid pump for liquids and gases |
| 12/27/1996 | WO1996032599A3 Pump barrel seal assembly including seal/actuator element |
| 12/24/1996 | US5586578 Positive sequence fluid transfer assembly |
| 12/19/1996 | DE19532037C1 Control of pump-compressor with separately controlled suction and pressure valves |
| 12/19/1996 | DE19521409A1 Slurry and conditioning medium feed device for slurry press |
| 11/20/1996 | EP0743451A1 Cryogenic pump |
| 11/20/1996 | EP0742870A1 Hydrostatic axial piston machine |
| 11/19/1996 | US5575626 Cryogenic pump |
| 11/14/1996 | WO1996035876A1 Pump device |
| 11/13/1996 | CN1033289C Double cylinders mud pump |
| 11/05/1996 | US5571002 Plunger pump system with shuttle valve |
| 10/17/1996 | WO1996032599A2 Pump barrel seal assembly including seal/actuator element |
| 10/15/1996 | US5564908 Fluid pump having magnetic drive |
| 09/24/1996 | US5558251 Apparatus for metering pigments for paints and the like |
| 09/19/1996 | DE19609852A1 Braking system for motor vehicle |
| 09/17/1996 | US5557154 Linear actuator with feedback position sensor device |
| 09/17/1996 | US5556263 Volumetric pump and value |
| 09/04/1996 | CN1032710C Unit for sealing of relative sliding surface of S shaped sluice valve of concrete pump |
| 08/15/1996 | WO1996024767A1 Process and device for feeding concrete or other thick materials |
| 08/14/1996 | EP0725896A1 Positive displacement pump or motor |
| 08/08/1996 | DE19503986A1 Verfahren und Vorrichtung zum Fördern von Beton oder anderen Dickstoffen Method and device for conveying concrete or other thick materials |
| 08/06/1996 | US5542821 Plate-type diaphragm pump and method of use |
| 07/09/1996 | US5533876 Pump barrel seal assembly including seal/actuator element |
| 07/04/1996 | DE19546299A1 Double piston pump for particle analyzer |
| 06/26/1996 | EP0718040A1 Paint pump |
| 06/26/1996 | EP0656995B1 Tube switch for a double-cylinder sludge pump |
| 06/18/1996 | US5526745 Pump unit for printing machine |
| 06/05/1996 | EP0576503B1 Method for the dosage of a fluidized polymerization catalyst into a polymerization reactor |
| 05/28/1996 | US5520521 Hydraulic control device for a viscous fluid pump |
| 05/17/1996 | WO1996014510A1 Simultaneous double-action elliptical piston pump |
| 05/17/1996 | WO1996014492A1 Dual-piston pump apparatus |
| 05/17/1996 | CA2203542A1 Dual-piston pump apparatus |
| 05/15/1996 | EP0711982A2 Dosing device for viscous materials |
| 05/15/1996 | CN1122414A Positive-displacement pump with spool |
| 05/14/1996 | US5516429 Fluid dispensing system |
| 05/08/1996 | EP0710328A1 Continuous conveying process and device for shear-sensitive fluids |
| 05/08/1996 | EP0710327A1 High pressure pump system and method of operation thereof |
| 05/07/1996 | US5513963 Direct action fluid motor and injection pump |
| 05/07/1996 | US5513962 Pneumatically actuated lubricant pump |
| 05/01/1996 | EP0708721A1 Hydraulic braking system with skid and drive slip control |
| 04/23/1996 | US5509578 Dispensing pump |
| 04/23/1996 | CA2007977C Sludge pump |
| 04/17/1996 | EP0707146A1 Apparatus for metering pigments for paints and the like |
| 04/04/1996 | DE4425402A1 Hydraulic pump for hydraulic brake system |
| 03/13/1996 | EP0701061A1 Pump and pump unit and method |
| 03/06/1996 | CN1118048A Device and a method for influencing of a valve |
| 02/29/1996 | DE19528288C1 Twin cylinder pump for viscous materials |
| 02/27/1996 | US5494420 Rotary and reciprocating pump with self-aligning connection |
| 02/22/1996 | WO1996005428A1 Direct action fluid motor and injection pump |
| 02/14/1996 | EP0576467B1 Process and apparatus for distillation at supercritical conditions |
| 02/13/1996 | US5491372 Electric linear actuator with planetary action |
| 02/07/1996 | EP0695397A1 Peristaltic pump tube cassette for blood processing systems and the like |
| 01/31/1996 | EP0694693A1 Method and device for valve control |
| 01/25/1996 | WO1996001946A1 Hydrostatic axial piston machine |
| 01/17/1996 | CN1115002A Two-stroke engine oil metering fump |
| 01/09/1996 | US5482448 Positive displacement pump with concentrically arranged reciprocating-rotating pistons |
| 01/03/1996 | EP0690232A1 Membrane pump |
| 01/03/1996 | EP0690229A1 Positive displacement pump with a rotary valve |
| 01/02/1996 | US5479847 Dual-piston pump apparatus |
| 12/29/1995 | CA2152145A1 Positive-displacement pump with servo valve |
| 12/26/1995 | US5478217 Reciprocating pump for pumping viscous materials |
| 12/13/1995 | EP0686768A2 Positive displacement pump with cylinder end cap |
| 12/13/1995 | EP0686767A2 Positive displacement pump with compliant ball support means |
| 12/13/1995 | EP0494236B1 Improved fluid-working machine |
| 12/12/1995 | US5474101 Rapid clean-out valve assembly |
| 12/07/1995 | DE19520321A1 Variable oil pump for two stroke engines |
| 12/07/1995 | DE19512777A1 Pump unit for printing press |
| 12/05/1995 | US5472320 Displacement piston pump |
| 11/29/1995 | EP0598736B1 Hydraulic control device for a viscous fluid pump |
| 11/22/1995 | EP0683318A1 Pneumatically actuated pump |
| 11/15/1995 | EP0681672A1 Process for conveying thick matter containing preshredded scrap metal or similar solids. |
| 11/14/1995 | US5466132 Pump having a rotary distributor |