| Patents for F04B 7 - Piston machines or pumps characterised by having positively-driven valving (2,226) |
|---|
| 05/23/1989 | US4832580 Fluid pressurizing delivery pump system |
| 05/23/1989 | CA1254443A1 Reciprocating pump |
| 05/17/1989 | EP0315750A1 Pump for viscous material |
| 04/20/1989 | WO1989003479A1 Compact twin piston pump |
| 03/28/1989 | US4815946 Magnetostrictive pump with reversible valves |
| 03/21/1989 | US4813139 Chain saw |
| 01/31/1989 | US4801253 Oil pump |
| 01/12/1989 | DE3721643A1 Oil pump |
| 01/11/1989 | EP0298140A1 Metering pump with a rotary piston |
| 01/10/1989 | US4797073 Pump with rotating and reciprocating piston |
| 01/03/1989 | US4795317 For step control machine tool applications |
| 12/13/1988 | CA1246389A1 Two-cylinder viscous liquid pump with pipe switch |
| 12/07/1988 | EP0294291A1 Liquid supply device especially for the fuel supply of a burner for liquid fuel attached to this device |
| 12/07/1988 | EP0293382A1 Submersible positive displacement piston pump. |
| 10/20/1988 | WO1988008084A1 Axial control valve |
| 10/13/1988 | DE3711107A1 Reciprocating pump |
| 10/11/1988 | CA1242977A1 Reverse osmosis hand pump |
| 10/11/1988 | CA1242930A1 Pump and system employing said pump |
| 09/28/1988 | EP0283832A2 Device for taking out and precisely dispensing fluid media |
| 09/22/1988 | DE3712574C1 Axialsteuerventil Axialsteuerventil |
| 08/16/1988 | US4764093 Oil pump for chain saw |
| 07/26/1988 | USRE32719 Multi-way valves for pumps for conveying heavy flowable materials |
| 07/21/1988 | DE3700356A1 Solenoid valve for controlling quantities of liquid |
| 05/19/1988 | DE3735019A1 Schmiersystem fuer eine verbrennungsmaschine und pumpe hierfuer Lubrication system for an internal combustion engine and pump up here for |
| 05/17/1988 | US4744735 Parallel-cylinder, angled-valve fluid pump |
| 05/05/1988 | DE3735816A1 Pump system for dispensing pressurised fluid |
| 04/26/1988 | USRE32657 Two-cylinder pump for heavy flowable materials, such as concrete |
| 04/20/1988 | EP0263899A1 Evacuated pumping system |
| 03/30/1988 | CN87203535U Reciprocating pump |
| 03/15/1988 | US4730992 Continuously operable hydraulic device |
| 03/10/1988 | DE3630528A1 Piston pump |
| 02/23/1988 | CA1233070A1 Oscillating-deflector pump |
| 01/28/1988 | DE3153268C2 Two-cylinder viscous-material pump, preferably concrete pump |
| 01/20/1988 | EP0253602A2 Pumps |
| 12/29/1987 | US4715795 Metering pump |
| 12/09/1987 | EP0248110A2 Valveless positive displacement metering pump |
| 11/24/1987 | US4708605 Piston pump with rotating piston having a universal joint |
| 10/01/1987 | DE3709899A1 Hydraulic facility |
| 08/27/1987 | DE3705887A1 Pump |
| 08/18/1987 | US4687426 Cam machine |
| 08/12/1987 | CN87100461A Submersible positive displacement piston pump |
| 07/30/1987 | WO1987004497A1 Submersible positive displacement piston pump |
| 07/21/1987 | US4681022 Two-cylinder viscous liquid pump with pipe switch |
| 07/01/1987 | EP0226611A1 A dosing device. |
| 06/23/1987 | US4674659 Universal sequential dispensing pump system |
| 06/10/1987 | EP0224907A2 Dispenser for pasty products |
| 05/27/1987 | DE3541708A1 Piston pump without inlet and outlet valves |
| 05/20/1987 | EP0221933A1 Valve-free piston pump |
| 05/19/1987 | US4665742 Method for determining the closing point of a pump piston relative to a transverse bore in the pump cylinder |
| 05/05/1987 | US4662831 Apparatus for fracturing earth formations while pumping formation fluids |
| 04/21/1987 | US4659293 Pumping system with air conveyance and method |
| 03/31/1987 | US4653990 Positive double-piston displacement pump conveying pasteous material |
| 03/24/1987 | CA1219494A1 Piston pump |
| 03/11/1987 | EP0213419A1 Control valve for high density liquid pumps |
| 03/11/1987 | CN86105968A Control valve for viscous material pump |
| 03/04/1987 | EP0212728A1 Pump device |
| 02/25/1987 | EP0211314A1 Electromagnetic reciprocating-piston pump |
| 01/15/1987 | WO1987000248A1 Positive displacement piston pump |
| 01/07/1987 | CN86104087A Positive displacement piston pump |
| 12/16/1986 | US4629400 Hydraulic pump with pistons and controlled suction valves |
| 12/10/1986 | EP0204263A2 Piston pump with rotating piston |
| 12/04/1986 | WO1986007117A1 A dosing device |
| 12/02/1986 | US4625694 Fuel pumping apparatus |
| 11/20/1986 | WO1986006794A1 Valve-free piston pump |
| 11/05/1986 | EP0199798A1 Method and piston pump for operation of a hydraulic system |
| 11/04/1986 | US4620836 Oil pump with oscillating piston |
| 10/22/1986 | EP0198241A2 Pumping system |
| 10/15/1986 | EP0197402A2 Device for transporting thick matter suspensions and method for its operation |
| 09/30/1986 | US4614483 Device for sealing a concrete pump |
| 09/24/1986 | EP0195618A2 Metering pump |
| 09/23/1986 | US4613290 For viscous flowables |
| 09/10/1986 | EP0193752A1 Dosing pump |
| 08/12/1986 | US4605360 Reversible expansible chamber hydraulic pump |
| 07/29/1986 | CA1208494A1 Oscillating piston oil pump |
| 07/02/1986 | CA1206887A Engine with rotating cylinder wall |
| 06/17/1986 | US4595345 Gas compressor or blower |
| 05/13/1986 | USRE32144 For water desalination, using semi-permeable membrane |
| 05/09/1986 | WO1986002702A1 Method and piston pump for operation of a hydraulic system |
| 05/07/1986 | EP0180510A1 Hydraulic piston pump with positively driven inlet valves |
| 04/16/1986 | EP0177715A2 Process for detecting the closing point of a transverse bore by a piston in a pump cylinder |
| 04/16/1986 | EP0093732B1 Device in a pressure system |
| 04/08/1986 | US4580954 Oscillating-deflector pump |
| 04/02/1986 | EP0175929A2 Twin cylinder slurry pump with a pipe switch |
| 03/11/1986 | US4575317 Constant clearance positive displacement piston pump |
| 03/04/1986 | CA1201416A1 Dispenser for semi-liquid foods such as chili |
| 02/26/1986 | EP0172421A2 Reciprocating pump |
| 02/19/1986 | EP0171796A2 Swing pipe system for concrete pumps |
| 02/12/1986 | EP0171371A2 Pump apparatus |
| 01/29/1986 | EP0169287A1 A piston pump |
| 01/15/1986 | EP0167635A1 Hydraulic circuit for the control of reciprocating pistons pump |
| 01/07/1986 | US4563135 Pump for concrete or the like |
| 12/27/1985 | EP0090814B1 Piston machine with cylindrical working chamber or chambers |
| 11/19/1985 | US4553506 Engine with rotating cylinder wall |
| 11/19/1985 | CA1196823A1 Combined fluid pressure actuated fuel and oil pump |
| 09/24/1985 | CA1193912A1 Rotary pump |
| 08/20/1985 | US4536140 Pump apparatus and system for containing and metering uniform pulses of a small amount of a hazardous liquid |
| 08/14/1985 | EP0024431B1 Nonpulsating intravenous pump and disposable pump chamber |
| 08/13/1985 | US4534713 For filtering a liquid |
| 08/07/1985 | EP0150575A2 Pump and system employing said pump |
| 07/30/1985 | US4531897 Piston pump with a rotating piston |