Class 123/45A - Piston and crankshaft coaxial

Subclass of Class 123 - Internal-combustion engines
No. of patents: 26
Last issue date: 07/10/2007

Number	Title	Issue Date
7240645	Internal combustion engine The invention concerns an internal-combustion engine, the engine comprising a first combustion chamber, a first piston displaceably guided in the first combustion chamber, the first piston facing the first combustion chamber with a first piston surface in a first di...	07/10/2007
7174864	Combustion engine A combustion engine comprising; a pair of opposed cylinder elements (2, 3) having a common axis, each cylinder element being provided with a piston (28) reciprocable between first and second locations in the cylinder element the first and second locati...	02/13/2007
7124718	Multi-chamber internal combustion engine An internal combustion engine includes a piston dividing a cylinder into first and second variable volume chambers on either side thereof. One chamber admits and compresses air which is delivered to another chamber for combustion. The other chamber admits combustion...	10/24/2006
7117827	Means for treatment of the gases of combustion engines and the transmission of their power The disclosure relates to fluid working devices including reciprocating internal combustion engines and pumps. A number of arrangements for pistons and cylinders of unconventional configuration are described, mostly intended for use in IC engines operating without c...	10/10/2006
6986328	Rotary piston machine A rotary piston machine includes a housing provided with a cylindrical inner wall and at least one piston disposed inside the housing and rotating around a longitudinal central axis of the housing while moving back and forth in a linear manner, under the control of ...	01/17/2006
6895907	Diesel engine In diesel engine, blower forces air into bore of cylinder head against small diameter piston of compound piston assembly forcing assembly down in engine cylinder, permitting air to enter combustion chamber. Diesel fuel injector introduces diesel fuel into combustion...	05/24/2005
6481393	Internal combustion engine with compound piston assembly Compound piston assembly in cylinder of engine has small diameter piston engaging central bore in cylinder head mounted within cylinder and large diameter piston engaging cylinder. Swash plate, secured to drive shaft, engages large diameter piston. Two su...	11/19/2002
6343575	Rotating/reciprocating cylinder positive displacement device This positive displacement device features relative rotation and translation of a piston and a cylinder where the rotation accomplishes a rotary valve function and the translation accomplishes a change in chamber volume function. The preferred embodiment ...	02/05/2002
6171070	High-pressure reciprocating pumps A high-pressure reciprocating pump is constructed such that a plurality of plungers connected to a driver are made to move back and forth and intake channels or discharge channels are opened and closed by valves in synchronism with movements of the plunge...	01/09/2001
6145482	Rotary-reciprocal combustion engines This invention relates to an apparatus for producing a rotary motion force, using an internal combustion engine, rotary-reciprocal type, consisting of a housing, a piston, a rotor, a shaft, a rotary reciprocal guiding system, fuel intake system and an ign...	11/14/2000
6125819	Rotating piston engine with variable effective compression stroke A rotating cylindrical piston engine with a variable effective compression stroke. The present engine shuttles the piston during the power stroke as far as possible in the cylinder to maximize the use of the power provided by the fluid explosion. Since as...	10/03/2000
5850810	Rotating piston engine with variable effective compression stroke A rotating cylindrical piston engine with a variable effective compression stroke. The present engine shuttles the piston during the power stroke as far as possible in the cylinder to maximize the use of the power provided by the fluid explosion. Since as...	12/22/1998
5638776	Internal combustion engine An internal combustion engine employing two identical piston assembly units, each providing several piston faces of various diameters, oriented and reciprocating opposite to each other within housing which provides chambers to accommodate the several pist...	06/17/1997
5622142	Rotating piston engine with variable effective compression stroke A rotating cylindrical piston engine with a variable effective compression stroke. The present engine shuttles the piston during the power stroke as far as possible in the cylinder to maximize the use of the power provided by the fluid explosion. Since as...	04/22/1997
5441018	Internal combustion rotary piston engine A two stroke engine (2) comprises a housing (4), a cylinder (6), a shaft (10) rotatably supported in the housing (4) for rotation about the cylinder axis (14), a piston (8) slidably mounted on the shaft (10) while fixed for rotation with the shaft (10) an...	08/15/1995
5433176	Rotary-reciprocal combustion engine This invention relates to an apparatus for producing a rotary motion force by means of an external combustion engine, rotary-reciprocal type, consisting of a housing, a sealing mechanism or apparatus, a rotor and a shaft combined with a guiding system for...	07/18/1995
5429078	Internal combustion engine having rotary engine body An internal combustion engine comprises a hollow rotary engine body, an axially opposite pair of main pistons capable of rotating with but slidably reciprocating relative to the engine body, a cam mechanism for causing the main pistons to make one full ro...	07/04/1995
5301637	Rotary-reciprocal combustion engines This invention relates to an apparatus for producing a rotary motion force by means of an internal combustion engine, rotary-reciprocal type, consisting of a housing, a rotor and a shaft combined with a rotor's guiding system, fuel intake system and an ig...	04/12/1994
5230307	Internal combustion engine having rotary engine body An internal combustion engine comprises a hollow rotary engine body, an axially opposite pair of main pistons capable of rotating with but slidably reciprocating relative to the engine body, a cam mechanism for causing the main pistons to make one full ro...	07/27/1993
5156115	Rotary reciprocal combustion engines This invention relates to an apparatus for producing a rotary motion force by means of an internal combustion engine, rotary-reciprocal type, consisting of a housing, a rotor and a shaft combined with a rotor's guiding system, fuel intake system and an ig...	10/20/1992
5152257	Rotary-reciprocal combustion engines This invention relates to an apparatus for producing a rotary motion force by means of an internal combustion engine, rotary-reciprocal type, consisting of a housing, a rotor and a shaft combined with a rotor's guiding system, fuel intake system and an ig...	10/06/1992
5133305	Internal combustion engine having rotary engine body The present invention provides an internal combustion engine comprising a hollow engine body rotatable about a fixed shaft, a pair of pistons capable of rotating with but slidably reciprocating relative to the engine body, and a cam mechanism for causing ...	07/28/1992
4554787	Supercharged internal combustion engine A supercharged internal combustion engine, characterized in that it is constituted by a cylinder (1) comprised by two identical portions, assembled together, symmetrical with respect to an axis perpendicular to its longitudinal axis, and traversed along t...	11/26/1985
4366784	Crankless cam driven piston engine A lightweight crankless piston engine utilizes cam action to produce two piston strokes for one revolution of the engine output shaft, which shaft does not pierce the piston or the combustion chamber. Ease of assembly is enabled. One section of the cam is...	01/04/1983
4180028	Fluid operated device A fluid operated device comprises a cylinder, a piston movable axially therein, a shaft parallel to the axis of the cylinder and coupling means coupling the piston and cylinder and/or the piston and shaft in such a way that axial reciprocation of the pist...	12/25/1979
3994632	Rotary engine and pump Disclosed herein is an engine having opposed cylinders with a guided rotary and reciprocating piston which telescopes over an output shaft and transmits rotary motion directly to the output shaft without the need for a crankshaft. Guided rotary movement o...	11/30/1976

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Class 123/45A - Piston and crankshaft coaxial