| Patents for F02B 71 - Free-piston engines; Engines without rotary main shaft (1,404) |
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| 10/22/2008 | EP1982056A1 Free-piston engine |
| 10/22/2008 | EP1982048A2 System and method for electrically-coupled thermal cycle |
| 10/16/2008 | US20080251050 Rapid-fire rapid-response power conversion system |
| 10/15/2008 | CN100425811C Internal combustion engine |
| 10/08/2008 | EP1977091A2 Miniature electric power generator and system and method for controlling a miniature electric power generator |
| 10/08/2008 | CN201129211Y Quasi free-piston straight-line electric generating set |
| 10/02/2008 | WO2008118838A1 Exhaust check valve and piston return system |
| 09/23/2008 | US7426910 Engine system having improved efficiency |
| 09/16/2008 | US7424870 Combustion-engined setting tool |
| 09/11/2008 | US20080217372 Fastener Driving Tool |
| 09/02/2008 | CA2500036C Apparatus and method for generating electrical power in a borehole |
| 08/28/2008 | WO2008014399A3 Hydraulic engine |
| 08/28/2008 | DE102007017033B3 Free piston engine for use in e.g. hybrid vehicle, has crank piston axially movable by crank drive between upper and lower dead-centers in cylinder, where operating cycle of free-piston of engine takes pace within rotation of crank drive |
| 08/27/2008 | EP1831517B1 Axially driven piston/cylinder unit |
| 08/20/2008 | CN100412359C Opposed piston opposed cylinder free piston engine |
| 08/13/2008 | EP1954928A1 Fuel supply and combustion chamber systems for fastener-driving tools |
| 08/13/2008 | CN101240744A Hydraulic type dynamic machinery |
| 08/07/2008 | US20080184963 Connecting rod free piston machine |
| 08/07/2008 | DE102005006340B4 Freikolben-Energieerzeuger Free-piston power generator |
| 08/06/2008 | EP1952002A1 Four-stroke free piston engine |
| 07/31/2008 | WO2008060129A3 Hydraulic piston internal combustion engine |
| 07/31/2008 | WO2008060128A3 Hydraulic piston internal combustion engine-variator |
| 07/31/2008 | US20080178847 Free Swinging Piston Heat Machine |
| 07/17/2008 | US20080169326 Venting Check Valve For Combustion Nailer |
| 07/09/2008 | EP1423611B1 Fully-controlled, free-piston engine |
| 06/17/2008 | US7387092 Combustion-type power tool having cooling arrangement |
| 06/11/2008 | CN101196140A Internal combustion device outputting straight-line motion, internal combustion press and internal combustion hydraulic press |
| 06/10/2008 | US7383796 Internal combustion engine |
| 06/05/2008 | WO2008065081A2 Free-piston engine |
| 06/04/2008 | CN101194095A Device and method for converting energy |
| 05/28/2008 | CN100390385C Port for a fan chamber |
| 05/28/2008 | CN100390384C Combustion apparatus having improved airflow |
| 05/22/2008 | WO2008060129A2 Hydraulic piston internal combustion engine |
| 05/22/2008 | WO2008060128A2 Hydraulic piston internal combustion engine-variator |
| 05/22/2008 | US20080115767 Combustion-powered linear air motor/compressor |
| 05/01/2008 | US20080098972 Engine System Having Improved Efficiency |
| 04/30/2008 | CN201053346Y Oil pressure energy accumulating generating set |
| 04/24/2008 | WO2007111800A3 Monocylindrical hybrid two-cycle engine, compressor and pump and method of operation |
| 04/17/2008 | DE102006008842A1 Crankshaft less combustion engine or piston pump, has control wheels, which are engaged firmly with toothing provided on semi-circumference in toothing of piston bar |
| 04/16/2008 | CN100381684C Method for regulating the operation of a device for generating electric energy by means of a generator driven by a free-piston internal combustion engine |
| 04/10/2008 | DE202006018098U1 Energiewandlersystem Energy conversion system |
| 04/02/2008 | EP1904723A1 Ammonia generator, vehicle and method for generating ammonia |
| 03/26/2008 | EP1902211A1 Device and method for converting energy |
| 03/13/2008 | WO2008028216A1 An improved free-piston engine |
| 03/12/2008 | CN101142060A Venting check valve for combustion nailer |
| 03/11/2008 | US7341171 Fan control for combustion-powered fastener-driving tool |
| 02/20/2008 | CN201025122Y High-power density gas engine |
| 02/20/2008 | CN101128659A Premixed charge compression ignition engine with a variable piston stroke |
| 02/19/2008 | US7332825 System and method for controlling a power generating system |
| 02/14/2008 | US20080036312 Energy converter |
| 01/31/2008 | DE102005025446B4 Luftspülung für einen Freikolbenmotor Air purge for a free piston engine |
| 01/17/2008 | WO2005100769A3 Method and system for controlling a free-piston energy converter |
| 01/17/2008 | US20080011251 Combustion Power Tool |
| 01/15/2008 | US7318506 Free piston engine with linear power generator system |
| 01/08/2008 | US7316209 Combustion type power tool having buffer piece |
| 01/08/2008 | US7316116 Flywheel combustion engine |
| 01/02/2008 | EP1297607B1 Miniature generator |
| 01/01/2008 | US7314025 Combustion powered fastener-driving tool with interconnected chambers |
| 12/27/2007 | US20070295201 Control of Reciprocating Linear Machines |
| 12/27/2007 | DE102006029532A1 Freikolbenvorrichtung und Verfahren zum Betreiben einer Freikolbenvorrichtung Free-piston device and method of operating a free-piston device |
| 12/19/2007 | CN101091043A Axially driven piston/cylinder unit |
| 12/18/2007 | US7308997 Combustion-operated setting tool |
| 12/12/2007 | CN200989243Y Single-free piston double-cylinder type internal combustion engine power generating system |
| 12/11/2007 | US7305941 Combustion type power tool having motor suspension arrangement |
| 12/06/2007 | WO2007087143A3 System and method for electrically-coupled thermal cycle |
| 12/06/2007 | DE102005023178B4 Kompressionsimpulsverfahren zum Anlassen eines Freikolben-Verbrennungsmotors Compression pulse method for starting a free piston internal combustion engine |
| 12/06/2007 | DE102005020636B4 Kompressionsimpulsverfahren zum Anlassen eines Freikolben-Verbrennungsmotors mit mehreren Zylindern Pulse compression method for starting a free piston combustion engine with several cylinders |
| 12/06/2007 | DE102005020625B4 Elektromagnetisches-Stellventil-Strategie zur Steuerung eines Freikolbenmotors An electromagnetic control valve strategy for controlling a free-piston engine |
| 12/06/2007 | DE102005018565B4 Kraftstoffeinspritzung für einen Freikolbenmotor Fuel injection for a free piston engine |
| 12/05/2007 | EP1861600A1 A power system for producing electricity from an internal combustion engine by means of a linear generator |
| 11/08/2007 | WO2007126312A1 Energy converter having pistons with internal gas passages |
| 11/07/2007 | EP1851421A2 A four-cylinder, four-cycle, free piston, premixed charge compression ignition, internal combustion reciprocating piston engine with a variable stroke |
| 10/31/2007 | DE102006019582B3 Two stroke free flight two way piston engine for use as e.g. serial hybrid vehicle, has separate piston devices driven in opposite directions under effect of burnable gases expanding in common combustion chamber |
| 10/23/2007 | US7284511 Combustion-engined setting tool |
| 10/18/2007 | US20070240683 Combustion-engined setting tool |
| 10/18/2007 | US20070240651 Combustion-Type Power Tool Having Cooling Arrangement |
| 10/16/2007 | US7281502 Powered devices |
| 10/04/2007 | WO2007111800A2 Monocylindrical hybrid two-cycle engine, compressor and pump and method of operation |
| 10/04/2007 | WO2007067186A3 Oil-cooled internal combustion engine with rotary piston wall |
| 10/04/2007 | US20070227477 Combustion type power tool having buffer piece |
| 10/02/2007 | US7275505 Thermal regulation control for combustion nailer |
| 09/27/2007 | WO2007107974A1 Crankshaftless internal combustion engine |
| 09/27/2007 | WO2007081789A3 Miniature electric power generator system and method for controlling a miniature electric power generator |
| 09/13/2007 | US20070209615 Monocylindrical hybrid two-cycle engine, compressor and pump, and method of operation |
| 09/12/2007 | EP1831517A1 Axially driven piston/cylinder unit |
| 09/07/2007 | WO2006138211A3 Catalytic microcombustors for compact power or heat generation |
| 09/06/2007 | DE102006003826A1 Freikolbenmaschine Free-piston engine |
| 09/04/2007 | US7263955 Combustion powered linear actuator |
| 08/28/2007 | US7261071 Combustion type power tool facilitating cleaning to internal cleaning target |
| 08/21/2007 | US7258086 Four-cylinder, four-cycle, free piston, premixed charge compression ignition, internal combustion reciprocating piston engine with a variable piston stroke |
| 08/21/2007 | US7258085 Control device for free piston engine and method for the same |
| 08/14/2007 | US7255070 Internal combustion engine |
| 08/02/2007 | WO2007087143A2 System and method for electrically-coupled thermal cycle |
| 08/02/2007 | WO2007085344A1 Free-piston engine |
| 08/02/2007 | CA2637634A1 System and method for electrically-coupled thermal cycle |
| 08/01/2007 | CN101008339A Combustion chamber arrangement in combustion type power tool |
| 07/19/2007 | WO2007081789A2 Miniature electric power generator system and method for controlling a miniature electric power generator |
| 07/18/2007 | EP1644672B1 Heat pump system |
| 07/05/2007 | WO2006091682A3 Variable stroke premixed charge compression ignition engine |
| 07/03/2007 | US7237515 Combustion-type power tool having cooling arrangement |