| Patents for F01B 11 - Reciprocating-piston machines or engines without rotary main shaft, e.g. of free-piston type (808) |
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| 06/06/1989 | US4836757 Pressure actuated movable head for a resonant reciprocating compressor balance chamber |
| 05/18/1989 | DE3737184A1 Double-piston internal combustion engine with a central control groove or separate rinsing and charging |
| 05/09/1989 | US4827832 Valve system for a reciprocating device |
| 04/18/1989 | US4821813 Percussion drilling apparatus |
| 03/28/1989 | US4815291 Method and arrangement in heat engines |
| 03/23/1989 | WO1989002514A1 Pneumatic linear vibrator |
| 02/02/1989 | DE3724110A1 Einweg-airless-spruehdose mit druckgasantrieb Disposable airless spray with compressed gas driving |
| 01/26/1989 | WO1989000461A1 Disposable airless sprayer |
| 01/24/1989 | US4799421 Hydrodynamic spiral-grooved journal bearing for electromagnetically rotated and reciprocated compressor piston |
| 01/17/1989 | US4798129 Cam and lock vacuum booster mount with inverse arc securing tab arm |
| 01/17/1989 | US4798128 Double acting cylinder unit |
| 01/10/1989 | US4796428 Double-acting forging hammer and method |
| 12/15/1988 | WO1988009872A1 Mixed-phase motor |
| 11/15/1988 | US4783961 Natural gas pressure differential energy recovery system |
| 11/08/1988 | US4782796 Unsymmetrical free piston engine |
| 10/18/1988 | US4777801 Energy conversion apparatus |
| 10/11/1988 | US4776171 Self-contained renewable energy system |
| 08/25/1988 | DE3703529A1 Reciprocating piston engine |
| 08/10/1988 | EP0277382A1 Motor-compressor unit |
| 07/28/1988 | DE3701168A1 Piston machine |
| 07/05/1988 | US4754612 Method for optimizing the mechanical output of a fluid pressure free piston engine |
| 05/24/1988 | US4745847 Helical splined rotary actuator |
| 05/18/1988 | EP0128199B1 Refrigeration system with clearance seals |
| 05/03/1988 | US4741673 Apparatus for and a method of transferring liquid |
| 04/20/1988 | CN85102322B Slide-like driving means |
| 02/11/1988 | DE3624957A1 Hydraulic free-piston internal combustion engine |
| 02/04/1988 | DE3625051A1 Piston supercharger which can be driven by the exhaust gas pulses of an internal combustion engine |
| 01/28/1988 | WO1988000645A1 Process for actuating a valve in the exhaust gas outlet of a piston charger driven by exhaust pulses from an internal combustion engine and valve for carrying out the process |
| 01/27/1988 | EP0254292A1 Piston compressor driven by exhaust pulses of an internal combustion engine |
| 12/23/1987 | DE3620682A1 Control of oscillating free pistons for vehicle engines |
| 12/01/1987 | CA1229798A1 Cyclic dwell engine |
| 11/26/1987 | DE3617262A1 Hydrostatic drive |
| 11/25/1987 | EP0246227A1 Cyclic speed control apparatus in variable stroke machines. |
| 11/11/1987 | EP0132438B1 Double-acting forging hammer and method |
| 10/22/1987 | DE3623121A1 Crank gear in-line design |
| 10/13/1987 | US4699044 Fluid cylinder device with precision stroke adjustment |
| 07/07/1987 | US4678407 Multi-tandem free piston machine |
| 07/02/1987 | DE3546373A1 Hydrodynamic drive by means of a two-stroke diesel engine with opposed free pistons and a hydraulic pump |
| 06/23/1987 | US4674397 Fluid-operated reciprocating motor |
| 05/27/1987 | EP0223288A1 Arrangement comprising a hydrodynamically journalled reciprocable and rotatable piston |
| 04/23/1987 | WO1987002423A1 Cyclic speed control apparatus in variable stroke machines |
| 03/17/1987 | CA1219137A1 Refrigeration system with clearance seals |
| 03/05/1987 | DE3530131A1 Two-stroke internal combustion engine |
| 03/04/1987 | EP0113740B1 Start-up and control method and apparatus for resonant free piston stirling engine |
| 02/26/1987 | DE3519140A1 Assembly with fluid through-flow, with pistons reciprocating in cylinders, such as pumps, motors or internal combustion engines |
| 01/29/1987 | DE3628709A1 Crank mechanism with free piston |
| 01/08/1987 | DE3523785A1 Device for the control and for the drive or output of linear and free piston engines |
| 12/10/1986 | EP0204011A1 Aggregate with through flow by a fluid |
| 11/12/1986 | CN85102322A Slide-like drive means |
| 11/06/1986 | WO1986006439A1 Method and arrangement in heat engines |
| 09/09/1986 | US4610192 Reciprocable device |
| 08/12/1986 | CA1209348A1 Start-up and control method and apparatus for resonant free-piston stirling engine |
| 06/04/1986 | EP0183258A2 Free piston engine having a hydraulic power transmission mechanism |
| 04/22/1986 | US4583364 Piston centering method and apparatus for free-piston Stirling engines |
| 06/12/1985 | EP0143779A1 Hydraulically driven compressor/pump apparatus for resonant free piston stirling engines |
| 06/11/1985 | US4522111 Double-acting, fluid actuated positioning actuator |
| 06/06/1985 | WO1985002444A1 Pneumatic rotor for paint spraying apparatus, grease pumps and the like |
| 06/05/1985 | EP0143428A2 Air motor for paint spraying devices, lubricant pumps and the like |
| 05/23/1985 | WO1985002225A1 Apparatus for and a method of transferring liquid |
| 05/22/1985 | EP0142362A1 Apparatus for and a method of transferring liquid |
| 03/27/1985 | EP0027123B1 Combustion piston engine provided with power control means |
| 02/13/1985 | EP0132808A1 Cyclic dwell engine |
| 01/08/1985 | US4492147 Reciprocatory air motor with cushioning pistons |
| 01/01/1985 | US4491095 Cyclic dwell engine |
| 12/20/1984 | WO1984004946A1 Hydraulically driven compressor/pump apparatus for resonant free piston stirling engines |
| 12/19/1984 | EP0128199A1 Refrigeration system with clearance seals. |
| 12/18/1984 | US4488853 Fluid pressure ratio transformer system |
| 11/27/1984 | US4484638 Liquid inertia tool |
| 11/07/1984 | EP0113740A4 Start-up and control method and apparatus for resonant free piston stirling engine. |
| 11/06/1984 | US4480611 Internal combustion engine using several kinds of fuels, with electronically adjustable intake and exhaust valves and injection device |
| 10/09/1984 | US4475346 Refrigeration system with linear motor trimming of displacer movement |
| 08/28/1984 | US4467699 Pneumatic motor |
| 08/02/1984 | WO1984002953A1 Double-acting forging hammer and method |
| 07/25/1984 | EP0113740A1 Start-up and control method and apparatus for resonant free piston stirling engine. |
| 07/10/1984 | US4458581 In a variable volume pump |
| 06/21/1984 | WO1984002388A1 Refrigeration system with clearance seals |
| 05/30/1984 | EP0109746A1 Liquid dispensing system and automatic selector therefor |
| 03/06/1984 | US4434617 Start-up and control method and apparatus for resonant free piston Stirling engine |
| 02/16/1984 | WO1984000580A1 Start-up and control method and apparatus for resonant free piston stirling engine |
| 12/21/1983 | EP0029826B1 Pneumatic engine with piston slide |
| 12/20/1983 | US4420945 Method and apparatus for extracting energy from a pressured gas |
| 12/20/1983 | US4420944 Air cooling system |
| 11/23/1983 | EP0094862A1 Pneumatic driving device for a windscreen wiper and combined wiper-washer installation for headlights using such a device |
| 11/15/1983 | US4415313 Hydraulic generator with free-piston engine |
| 11/01/1983 | US4412552 Method of controlling inlet valves of compression reactor and device for effecting same |
| 11/01/1983 | US4412476 Tandem machine with opposed free pistons |
| 10/04/1983 | US4407240 Opposed piston internal combustion engine with special scavenging means |
| 09/27/1983 | US4406215 Drive cylinder |
| 09/20/1983 | US4404800 Gas energized engine system |
| 09/06/1983 | US4403153 Free-piston electric current generator |
| 09/06/1983 | US4402255 Compressed-air vibrator with reciprocating piston |
| 08/30/1983 | US4401415 Hydraulic pressure transformer |
| 08/16/1983 | CA1152004A1 Internal combustion engine |
| 08/09/1983 | US4397220 Air cushion for pneumatic impact tool |
| 08/09/1983 | CA1151679A1 Device for breaking a hard material |
| 04/26/1983 | CA1145264A1 Thermal impulse generator |
| 03/29/1983 | US4377991 Internal combustion apparatus |
| 02/16/1983 | EP0072363A2 Steam-powered engine |
| 02/09/1983 | EP0070866A1 Fluid-pressure operated motors |
| 02/01/1983 | US4370916 Percussive device |