Patents
Sitemap › F01 - Machines or engines in general; Engine plants in general; Steam engines › F01B - Machines or engines, in general or of positive-displacement type, e.g. steam engines › F01B 7 - Machines or engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders
Patents for F01B 7 - Machines or engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders (730)
12/1989
12/13/1989EP0345841A1 Piston engine, and a compression device provided with two piston engines and a cryogenic cooler
12/06/1989EP0344204A1 Variable-cycle reciprocating internal combustion engine
11/1989
11/22/1989CN2048111U Hydrautic device with high pressure and heavy calibre
08/1989
08/15/1989US4856463 Variable-cycle reciprocating internal combustion engine
08/08/1989US4854740 Wear reduction member for engine
06/1989
06/27/1989US4841928 Reciprocal engine with floating liner
06/26/1989EP0305504A4 High pressure reciprocator components.
05/1989
05/30/1989US4834032 Two-stroke cycle engine and pump having three-stroke cycle effect
04/1989
04/25/1989US4823745 Conformable bladder engine
04/24/1989EP0246275A4 Thermally powered engine.
04/18/1989US4821695 Swing beam internal combustion engines
03/1989
03/08/1989EP0305504A1 High pressure reciprocator components.
03/07/1989US4809646 Two)cycle internal combustion engine
03/02/1989DE3825864A1 Drehende kolben-versetzungseinrichtung Rotating-piston device dislocation
02/1989
02/22/1989CN2033057U Automatic stroke-adjusting displacement pump device
02/07/1989US4802449 "O"-Type engine construction
01/1989
01/31/1989US4800858 Collapsible wall engine
09/1988
09/22/1988WO1988007129A1 High pressure reciprocator components
09/22/1988WO1988007127A1 Two-stroke cycle engine and pump having three-stroke cycle effect
08/1988
08/30/1988US4767294 Power conversion device
08/11/1988WO1988005862A1 Variable-cycle reciprocating internal combustion engine
05/1988
05/04/1988EP0265546A1 Machine with double acting box piston
04/1988
04/06/1988EP0262280A1 Internal combustion engine having movable side walls
04/06/1988CN86106958A Reciprocatory machines
12/1987
12/09/1987EP0248655A2 Swing beam internal combustion engines
11/1987
11/25/1987EP0246275A1 Thermally powered engine.
09/1987
09/22/1987US4694785 Piston apparatus
09/09/1987CN86100619A Power conversion device
09/02/1987EP0233905A1 Mechanism for transforming the alternating motion of a piston into a circular motion of a shaft.
07/1987
07/13/1987EP0208718A4 Power conversion device.
06/1987
06/04/1987WO1987003357A1 Thermally powered engine
04/1987
04/21/1987US4658703 Method and apparatus for extracting heat and mechanical energy from a pressured gas
03/1987
03/24/1987US4651690 Collapsible wall engine
03/24/1987US4651685 Paired beam engines and pumps
02/1987
02/26/1987WO1987001167A1 Mechanism for transforming the alternating motion of a piston into a circular motion of a shaft
02/04/1987EP0210262A1 Axial shaft piston engine
01/1987
01/21/1987EP0208718A1 Power conversion device
01/07/1987EP0207093A1 Two-stroke engine
12/1986
12/02/1986US4625685 Machine with double acting box piston
11/1986
11/18/1986CA1214110A1 Drive arrangement for internal combustion engine
10/1986
10/21/1986US4617801 Thermally powered engine
08/1986
08/14/1986WO1986004637A1 Axial shaft piston engine
07/1986
07/17/1986WO1986004110A1 Power conversion device
06/1986
06/19/1986WO1986003546A1 Two-stroke engine
04/1986
04/10/1986CN85102448A Internal combustion reciprocating engine with cylinders in series four stroke
02/1986
02/11/1986US4569314 Two-stroke axial pistons engines
01/1986
01/02/1986EP0165937A1 Piston compressor
11/1985
11/21/1985EP0161440A1 Piston type internal combustion engine of annular section
11/19/1985US4553912 Cylinder-piston of a rotary compressor
07/1985
07/17/1985EP0148348A1 Piston compressor
07/02/1985US4526141 Drive arrangement for internal combustion engine
06/1985
06/19/1985EP0063598B1 Two-strokes axial pistons engine
06/11/1985US4522163 Stepped piston and stepped piston engine
05/1985
05/23/1985WO1985002232A1 Piston compressor
05/21/1985US4517932 Paired beam engines and pumps
04/1985
04/17/1985EP0052109B1 An internal combustion engine
01/1985
01/01/1985US4491096 Two-stroke cycle engine
10/1984
10/24/1984EP0122299A1 Opposed pistons engine
08/1984
08/21/1984US4466388 Compression ignition internal combustion engine
08/21/1984US4466335 Sealing for variable volume device
08/14/1984US4465036 Internal combustion engine
08/08/1984EP0115257A1 Caburating displacement engine with pistons arranged one within another and slide-valves
05/1984
05/30/1984EP0025790B1 Fluid pressure machines
02/1984
02/14/1984US4431387 Hermetic refrigeration rotary motor-compressor
02/14/1984US4431356 Hermetic refrigeration rotary motor-compressor
12/1983
12/20/1983CA1158986A1 Internal combustion engine
12/13/1983US4419969 Flexible cylinder-head internal combustion engine with cylinder compression adjustable for use with available fluid fuels
11/1983
11/22/1983CA1157397A1 Brake actuators
09/1983
09/15/1983WO1983003125A1 Vibrationless piston mechanism
08/1983
08/03/1983EP0084790A1 Stepped piston and stepped piston engine
05/1983
05/03/1983US4381739 Cam internal combustion engine
04/1983
04/26/1983US4380972 Internal combustion engines
03/1983
03/08/1983US4375792 Asymmetrical internal combustion engine
11/1982
11/16/1982US4359016 Internal combustion engine
11/09/1982US4357916 Two-stroke cycle gasoline engine
11/03/1982EP0063598A1 Two-strokes axial pistons engine.
11/02/1982US4356761 Fluid pressure machines
10/1982
10/05/1982US4352343 Constructional improvements in a two-stroke opposed piston engine operating with stratified charge
09/1982
09/28/1982EP0052109A4 An internal combustion engine.
08/1982
08/24/1982US4345550 Deflecting rocker arm for an internal combustion engine
06/1982
06/15/1982US4334506 Reciprocating rotary engine
05/1982
05/26/1982EP0052109A1 An internal combustion engine.
05/13/1982WO1982001570A1 Two-strokes axial pistons engine
03/1982
03/02/1982CA1119101A1 Reciprocating piston beam engine
01/1982
01/26/1982US4312306 Flexible cylinder-head internal combustion engine
01/26/1982US4312305 Two-stroke cycle gasoline engine
12/1981
12/29/1981US4308018 Trim-tilt device for marine propulsion devices
12/15/1981US4305349 Internal combustion engine
11/1981
11/17/1981US4300512 MHD Engine
11/12/1981WO1981003203A1 Deflecting rocker arm for an internal combustion engine
08/1981
08/25/1981US4285304 Internal combustion engine
06/1981
06/24/1981EP0030832A1 Internal combustion engine
06/23/1981US4274367 Reciprocating piston beam engine
06/16/1981CA1103219A1 Pressurized fluid flow generator
04/1981
04/01/1981EP0025790A1 Fluid pressure machines.
02/1981
02/03/1981US4248183 Two-stroke cycle diesel engine
02/03/1981US4248050 Double-yoke balanced compressor
01/1981
01/13/1981US4244338 Internal combustion engine
10/1980
10/16/1980WO1980002175A1 Fluid pressure machines
08/1980
08/12/1980US4216747 Uniflow, double-opposed piston type two-cycle internal combustion engine
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