| Patents for F01L 25 - Drive, or adjustment during operation, of distribution or expansion valves by non-mechanical means (555) |
|---|
| 06/16/2005 | US20050126384 Metering device |
| 05/12/2005 | US20050098028 Asymmetrically accelerated vibrator for feeding materials |
| 05/05/2005 | US20050091980 Reciprocating engine and inlet system therefor |
| 03/29/2005 | CA2107697C Fluid pressure operated piston engine assembly |
| 03/08/2005 | US6862972 Additive injection device |
| 12/22/2004 | EP1488081A1 Reciprocating engine and inlet system therefor |
| 12/07/2004 | CA2159798C Mechanical shift, pneumatic assist pilot valve |
| 11/02/2004 | CA2191423C Hydraulic actuator |
| 10/21/2004 | US20040206229 Additive injection device |
| 06/30/2004 | EP1432913A2 Shaft coupling and shifting mechanism for pneumatic pump |
| 06/24/2004 | US20040118274 Additive injection device |
| 06/23/2004 | CA2453999A1 Additive injection device |
| 05/18/2004 | US6736046 Pilot control valve utilizing multiple offset slide valves |
| 04/28/2004 | EP1413750A2 Pilot control valve for reciprocating pump |
| 04/22/2004 | US20040074383 Pilot control valve utilizing multiple offset slide valves |
| 02/24/2004 | CA2168152C Pilot control valve having means for recovering exhaust fluids |
| 01/06/2004 | CA2236957C Air driven diaphragm pump |
| 10/09/2003 | WO2003083270A1 Reciprocating engine and inlet system therefor |
| 10/09/2003 | CA2478843A1 Reciprocating engine and inlet system therefor |
| 05/20/2003 | US6564547 Device for digital hydraulic pressure transformation (DHPT) |
| 09/10/2002 | CA2063762C Floating fluid-operated actuator |
| 08/13/2002 | US6431046 Pneumatic motor |
| 06/04/2002 | US6397814 Apparatus and method for controlling intake air quantity for internal combustion engine |
| 05/07/2002 | US6382934 Reversing valve for a compressed air membrane pump |
| 05/02/2002 | EP0760731B1 Pneumatic impact breaker |
| 01/02/2002 | CN1077201C Gas driven mechanical oscillator and method |
| 12/19/2001 | EP0859912B1 Air driven diaphragm pump |
| 10/31/2001 | DE10019809A1 Controlling compressed air fed to cylinder of compressed air operated piston engine involves trigger on shaft passing contact device once per revolution, causing contact device to open valve |
| 09/19/2001 | CN1313454A Pneumatic mechanical vibrator and method thereof |
| 08/23/2001 | US20010016169 Reversing valve for a compressed air membrane pump |
| 07/25/2001 | EP1118754A2 A gas driven mechanical oscillator and method |
| 06/27/2001 | EP0799380B1 Waterpower machine |
| 06/19/2001 | US6247332 Gas driven mechanical oscillator and method |
| 06/06/2001 | EP0920573B1 High-pressure steam engine |
| 05/09/2001 | EP0760732B1 Pneumatic impact breaker |
| 04/18/2001 | EP0772734B2 Hydraulic switching valve, and a free-piston engine provided therewith |
| 02/06/2001 | US6183217 Pilot control valve for controlling a reciprocating pump |
| 12/13/2000 | EP1059425A2 Pilot control valve for controlling a reciprocating pump |
| 10/11/2000 | EP1042596A1 Device for digital hydraulic pressure transformation (dhpt) |
| 05/30/2000 | US6067796 Gas driven mechanical oscillator and method |
| 01/11/2000 | US6012377 Shuttle valve of a reciprocating pneumatic motor for hydraulics |
| 01/05/2000 | EP0746449B1 Valve arrangement in compressed air driven motors |
| 12/02/1999 | DE19823086A1 Valve gear for fluid medium driven, flywheel-less, reciprocating piston machines |
| 11/16/1999 | US5983638 Hydraulic switching valve, and a free piston engine provided therewith |
| 11/03/1999 | EP0953750A2 Apparatus and method for controlling intake air quantity for internal combustion engine |
| 09/15/1999 | EP0692072B1 Pressure medium driven device performing linear motion |
| 08/31/1999 | US5944118 Pneumatic impact breaker |
| 07/08/1999 | WO1999034100A1 Device for digital hydraulic pressure transformation (dhpt) |
| 06/09/1999 | EP0920573A1 High-pressure steam engine |
| 03/18/1999 | DE19738779A1 Reversing compressed air membrane pump |
| 02/03/1999 | EP0859912A4 Air driven diaphragm pump |
| 02/02/1999 | US5865040 Gas driven mechanical oscillator and method |
| 12/16/1998 | EP0754271A4 Pneumatically shifted reciprocating pump |
| 12/10/1998 | WO1998055734A1 High-pressure steam engine |
| 12/10/1998 | DE19723748A1 Hochdruckdampfmotor High pressure steam engine |
| 10/27/1998 | US5826482 Hydraulic actuator |
| 10/06/1998 | US5816783 Electrically driven hermetic compressor |
| 09/29/1998 | CA2137095C Downhole pump drive system |
| 08/26/1998 | EP0859912A1 Air driven diaphragm pump |
| 08/04/1998 | US5787786 Dual hydraulic oscillator for the reciprocating cutter of an agricultural machine |
| 07/07/1998 | US5775196 Valve arrangement in compressed air driven motors |
| 06/16/1998 | US5765375 Waterpower machine |
| 06/16/1998 | US5765374 Method for converting energy of an expanding gas into mechanical work |
| 05/12/1998 | US5749421 Pneumatic impact breaker |
| 05/06/1998 | EP0839265A1 Operation and control of a free piston aggregate |
| 03/25/1998 | EP0772734B1 Hydraulic switching valve, and a free-piston engine provided therewith |
| 03/17/1998 | US5729629 Handwritten symbol recognizer |
| 03/05/1998 | DE19714100C1 Pump driven by compressed air |
| 02/12/1998 | DE19706818C1 Pneumatically actuated hydraulic pump |
| 12/11/1997 | DE19622488A1 Method of operating piston machine for expansion or gaseous medium at high pressure and temperature in gas plants |
| 11/19/1997 | CN1164954A Hydraulic oscillator |
| 11/04/1997 | US5683230 Pressure medium driven device performing linear motion |
| 10/16/1997 | WO1997038224A1 Modular air-driven pump |
| 10/08/1997 | EP0799380A1 Waterpower machine |
| 07/29/1997 | US5651389 On a petroleum storage tank |
| 05/15/1997 | WO1997017541A1 Air driven diaphragm pump |
| 05/14/1997 | EP0772734A1 Hydraulic switching valve, and a free-piston engine provided therewith |
| 05/06/1997 | US5626467 Modular pump |
| 05/06/1997 | US5626068 Hydraulic reciprocating mechanism |
| 04/15/1997 | US5619786 Method of forming a seal between a control shaft and bushing |
| 04/01/1997 | US5616005 Fluid driven recipricating apparatus |
| 03/18/1997 | US5611678 Shaft seal arrangement for air driven diaphragm pumping systems |
| 03/12/1997 | EP0760732A1 Pneumatic impact breaker |
| 03/12/1997 | EP0760731A1 Pneumatic impact breaker |
| 03/04/1997 | US5607290 Air driven diaphragm pump |
| 01/22/1997 | EP0754271A1 Pneumatically shifted reciprocating pump |
| 12/31/1996 | US5588808 Device for elevating a pressure acting on a liquid |
| 12/11/1996 | EP0746449A1 Valve arrangement in compressed air driven motors |
| 11/20/1996 | EP0711378A4 A gas driven mechanical oscillator and method |
| 10/17/1996 | WO1996032576A1 Operation and control of a free piston aggregate |
| 10/17/1996 | CA2217864A1 Operation and control of a free piston aggregate |
| 09/24/1996 | US5558506 Pneumatically shifted reciprocating pump |
| 09/04/1996 | CN1130413A Gas driven mechanical oscillator and method |
| 09/03/1996 | US5551847 Lost motion pilot valve for diaphragm pump |
| 07/23/1996 | US5538042 Air driven device |
| 06/27/1996 | WO1996019665A1 Waterpower machine |
| 06/18/1996 | US5527160 Mechanical shift, pneumatic assist pilot valve |
| 06/13/1996 | WO1996018036A1 Pump pressure multiplier |
| 05/28/1996 | US5520520 Pneumatically operated double acting pump for viscous food stuffs |
| 05/15/1996 | EP0711905A2 Improved mechanical shift, pneumatic assist pilot valve |