| Patents for F01B 11 - Reciprocating-piston machines or engines without rotary main shaft, e.g. of free-piston type (808) |
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| 10/26/1995 | DE4414257A1 Verfahren zur Steuerung des Verdrängekolbens einer Freikolben-stirling-Maschine Method for controlling the displacer piston of a free piston stirling engine |
| 10/11/1995 | EP0676610A1 A free piston machine |
| 08/16/1995 | EP0666961A1 Air motor with means to prevent freezing |
| 05/31/1995 | EP0655120A1 Variable spring free piston stirling machine |
| 04/26/1995 | CN2195621Y Pump for door of bus |
| 04/20/1995 | WO1995010690A1 Reciprocable device |
| 04/11/1995 | CA1335166C Fluid operable engine |
| 03/28/1995 | CA1334979C Production of methanol |
| 02/14/1995 | CA1334398C Piston engine with dynamic groove bearing internal to piston and isolated from compression space |
| 02/09/1995 | WO1995004208A1 Air motor with means to prevent freezing |
| 01/31/1995 | US5385452 Hydraulic fluid pressurizer with fluid cushioning means |
| 01/31/1995 | US5385021 Free piston stirling machine having variable spring between displacer and piston for power control and stroke limiting |
| 01/26/1995 | WO1995002750A1 Piston rod bearing assembly of reciprocating piston engine |
| 12/15/1994 | DE4316055C1 Free-piston engine for producing fluid flow |
| 11/17/1994 | DE4315229A1 Electrical generator, which is used in particular for driving motor vehicles and is driven by an internal combustion engine having freely floating pistons |
| 09/14/1994 | EP0614508A1 Free-piston engine having a fluid energy unit. |
| 09/07/1994 | EP0613521A1 Free-piston engine having a fluid pressure unit. |
| 05/10/1994 | US5309817 Linear brake for fluid actuator |
| 03/03/1994 | WO1994004878A1 Variable spring free piston stirling machine |
| 01/19/1994 | EP0466764B1 An arrangement for controlling a linear motor |
| 01/11/1994 | CA1325897C Crankless reciprocating machine |
| 01/04/1994 | US5275542 Free piston-type compressor |
| 11/23/1993 | CA1324541C Piston engine and cryogenic cooler provided with such a piston engine |
| 10/12/1993 | US5252042 Gas booster assembly for fluid pressure piston driving apparatus |
| 09/22/1993 | EP0560956A1 Oscillating piston motor and installation with an oscillating piston motor. |
| 09/07/1993 | US5241896 Pneumatic cylinder apparatus |
| 07/06/1993 | USRE34301 Fluid operable engine |
| 06/29/1993 | US5222466 Internal combustion engine with flexible/piston cylinder |
| 06/29/1993 | US5222425 Cyclic hydraulic actuator |
| 05/27/1993 | WO1993010345A1 Free-piston engine having a fluid pressure unit |
| 05/27/1993 | WO1993010344A1 Free-piston engine having a fluid pressure unit |
| 05/27/1993 | WO1993010342A1 Free-piston engine having a fluid energy unit |
| 05/19/1993 | EP0542700A1 an apparatus for the alternating movement of flexible tools |
| 05/06/1993 | DE4136099A1 Two-stroke free-piston steam engine - generates steam energy in sealed cylinder and uses motion of permanent magnets w.r.t. coils to generate electricity |
| 04/15/1993 | WO1993007360A1 Oscillating piston motor and installation with an oscillating piston motor |
| 04/07/1993 | EP0515559A4 Stirling free piston cryocoolers |
| 02/24/1993 | EP0528714A1 Gas booster |
| 12/29/1992 | US5174117 Free piston Stirling engine |
| 12/22/1992 | US5173036 For operating a high pressure pump |
| 12/02/1992 | EP0515559A1 Stirling free piston cryocoolers |
| 11/24/1992 | US5165324 Piston-cylinder type air damper |
| 11/12/1992 | WO1992019855A1 Relative gas spring configuration free-piston stirling cycle system |
| 10/21/1992 | EP0509660A1 Free piston-type compressor |
| 09/30/1992 | EP0505667A1 A pneumatic drive means for a cleaning brush |
| 08/26/1992 | CN2114031U Low-loss of energy engine |
| 06/17/1992 | EP0386025B1 Unsymmetrical free piston engine |
| 06/02/1992 | US5117743 Compact fluid operated cylinder and method |
| 05/19/1992 | US5113808 Double piston engine |
| 05/05/1992 | US5109673 Relative gas spring configuration free-piston stirling cycle system |
| 04/28/1992 | CA1299466C Mixed-phase motor |
| 04/14/1992 | CA1298737C Pressure actuated movable head for a resonant reciprocating compressor balance chamber |
| 01/14/1992 | US5079924 Circuit for controlling a free-piston engine in particular of a refrigerator compressor |
| 12/11/1991 | EP0330687B1 Pneumatic linear vibrator |
| 12/10/1991 | US5070769 Pneumatic linear vibrator |
| 10/02/1991 | EP0246227B1 Cyclic speed control apparatus in variable stroke machines |
| 08/24/1991 | WO1991013297A1 Stirling free piston cryocoolers |
| 08/24/1991 | CA2076539A1 Stirling free piston cryocoolers |
| 08/13/1991 | US5038570 Piston engine and cryo-cooler provided with such a piston engine |
| 07/24/1991 | WO1991011596A1 Unsymmetrical free piston engine |
| 07/16/1991 | US5031581 Crankless reciprocating machine |
| 07/03/1991 | CN1013045B Super-low-speed steam engine installation with steam pump and water power pump |
| 06/18/1991 | US5024142 Cyclically operating fluid drive motor with magnetically controlled diaphragm valves |
| 06/11/1991 | US5022229 Stirling free piston cryocoolers |
| 05/29/1991 | EP0429125A2 Circuit for controlling a free-piston engine, in particular of a refrigerator compressor |
| 05/23/1991 | DE3938492A1 Motor with piston driven by pressure medium - has inlet and outlet valves actuated by piston movement |
| 05/15/1991 | EP0378656A4 Pressure actuated movable head for a resonant reciprocating compressor balance chamber |
| 05/01/1991 | CN1051068A Vacuum compression percussion machine |
| 04/24/1991 | CN1012446B Wind-collecting and waste-gas exhausting device |
| 03/14/1991 | DE3929605A1 Pump used in vehicles suspension - transfers gas between containers and uses column of oil to adjust piston stroke |
| 03/12/1991 | US4998460 Piston engine |
| 02/07/1991 | WO1991001436A1 Fluid drive motor with magnetically controlled valves |
| 01/02/1991 | EP0405127A1 Pneumatic motor |
| 11/27/1990 | US4972763 Impact absorbing shield for industrial cylinder and method of using same |
| 10/07/1990 | WO1990012197A1 A method and an arrangement for controlling a linear motor |
| 09/05/1990 | CN2061609U Hydraulic rotary elevator |
| 08/21/1990 | US4949622 Fluid operable engine |
| 08/07/1990 | US4945725 Differential-area piston type mixed-phase motors |
| 07/25/1990 | EP0378656A1 Pressure actuated movable head for a resonant reciprocating compressor balance chamber |
| 07/11/1990 | EP0376938A1 Method and arrangement in heat engines |
| 05/23/1990 | EP0369531A1 Free piston engine |
| 05/17/1990 | DE3838639A1 Hydraulic striking mechanism |
| 05/15/1990 | US4924758 Compact fluid operated apparatus and method |
| 05/14/1990 | CA2002725A1 Piston engine |
| 04/24/1990 | US4920288 Piston engine with dynamic groove bearing internal to piston and isolated from compression space |
| 03/07/1990 | EP0357291A2 Crankless reciprocating machine |
| 02/22/1990 | WO1990001613A1 Compact fluid operated apparatus and method |
| 02/05/1990 | EP0246227A4 Cyclic speed control apparatus in variable stroke machines. |
| 01/30/1990 | US4896632 Unsymmetrical free piston engine |
| 12/28/1989 | WO1989012749A1 Pressure actuated movable head for a resonant reciprocating compressor balance chamber |
| 12/28/1989 | WO1989012735A1 Unsymmetrical free piston engine |
| 12/13/1989 | EP0345841A1 Piston engine, and a compression device provided with two piston engines and a cryogenic cooler |
| 12/05/1989 | US4884495 Fluid motor actuator with compression spring fail-safe mechanism |
| 12/05/1989 | US4884405 Valve arrangement for a piston charger driven by exhaust gas pulses |
| 11/28/1989 | US4883823 Preparing methanol |
| 10/05/1989 | WO1989009324A1 Reciprocating piston internal combustion engine with means for controlling the output |
| 09/27/1989 | CN1035867A Wind-collecting and waste-gas exhausting device |
| 09/06/1989 | EP0330687A1 Pneumatic linear vibrator |
| 08/30/1989 | CN1035155A Super-low-speed steam engine installation with steam pump and water power pump |
| 07/19/1989 | EP0324516A1 Piston engine and cryogenic cooler provided with such a piston engine |
| 06/07/1989 | EP0319341A2 A fluid operable engine |