Abstract: Carbon fiber reinforced carbon composite rotary, sleeve, and disc valves for internal combustion engines and the like are disclosed. The valves are formed from knitted or braided or warp-locked carbon fiber shapes. Also disclosed are valves fabricated from woven carbon fibers and from molded carbon matrix material. The valves of the present invention with their very low coefficient of thermal expansion and excellent thermal and self-lubrication properties, do not present the sealing and lubrication problems that have prevented rotary, sleeve, and disc valves from operating efficiently and reliably in the past. Also disclosed are a sealing tang to further improve sealing capabilities and anti-oxidation treatments.

Abstract: A multi-cylinder internal combustion engine comprising a cylinder assembly with intake ports and exhaust ports arranged in register, wherein the distribution system for opening and closing said intake and exhaust ports include two rotary pipes each consisting of a plurality of mutually communicating aligned hollow valves. The rotary intake pipe and the rotary exhaust pipe are housed in an intake manifold and an exhaust manifold respectively, each defining a chamber surrounding said intake pipe and said exhaust pipe respectively over a large part of the periphery thereof, said chambers being sealed off from one another and arranged so that gaseous fluids can flow freely outside and along said rotary distribution pipes.

Abstract: A variable roller valve system for use in an internal combustion engine. A Sliding Iris.TM. feature provides separate, independent, and continuous control over the aperture sizes of the intake and exhaust valve ports while the engine is running. The valve apertures are constricted and enlarged in a reciprocating motion along the longitudinal axis of the valve rollers so as not to disrupt valve duration. At the same time, and also while the engine is running, hydraulic mechanisms provide separate, independent and continuous control over the relative timing phases of the intake valve train and the exhaust valve train with respect to the crankshaft. As a result, combustion efficiency can be optimized and noxious exhaust emissions can be minimized over a wide range of engine operating speeds and power demands.

Abstract: A four-cycle internal combustion engine having a crankshaft, a spark plug with a central electrode and a piston cylinder with an internal surface. An intake opening and an exhaust opening are formed in the internal surface. A sleeve is rotatably disposed adjacent the internal surface. A port is formed within the sleeve and is configured and positioned to sequentially coincide with the intake opening and the exhaust opening. The piston reciprocates within the sleeve and overlaps the port at the top dead center position of the piston. Conical gears on the bottom of the sleeve and on the crankshaft rotate the sleeve at one half the speed of the crankshaft to realize the four cycles of the engine.

Abstract: An internal combustion engine has rotary valves associated with movable shutters operable to vary the closing of intake air/fuel port sections to obtain peak volumetric efficiency over the entire range of speed of the engine. The shutters are moved automatically by a control mechanism that is responsive to the RPM of the engine. A foot-operated lever associated with the control mechanism is also used to move the shutters between their open and closed positions.

Abstract: An internal combustion engine is provided including at least one cylinder having at least one inlet port and at least one exhaust port; a piston mounted in the at least on cylinder for reciprocated movement therein, the piston having a piston rod; a crankshaft coupled to the piston rod for converting the reciprocating movement of the piston to rotational movement; a cylindrical sleeve surrounding an outside wall of a portion of the cylinder; and mounting structure for mounting the cylindrical sleeve for rotation with respect to the cylinder. The cylindrical sleeve has at least one slot defined therethrough which aligns periodically with the ports of the cylinder upon rotation of the cylindrical sleeve. The mounting structure includes low-friction bearing structure to minimize friction between the cylinder and the sleeve. A gear train is provided for rotating the cylindrical sleeve relative to movement of the crankshaft.

Abstract: The swash plate engine is provided with an Aspin type rotary valve system with a variable compression capability. The engine may be of four-piston type or six-piston type. The size of the combustion chambers can be changed from time to time to vary the compression ratio.The engine may also be coupled with an accumulator to store the energy of braking for subsequent acceleration of the engine.

Abstract: 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 piston causes rotation of the cylinder and/or the shaft.

Abstract: A lubrication and sealing system for the cylinder head of an internal combustion engine having a sleeve valve mounted for rotation therein, said sleeve valve having intake slots therethrough which register periodically, as the valve rotates, with air intake ports in the cylinder to permit air to enter the cylinder. The sleeve valve is provided with one or more helically shaped sealing rings carried in the wall of the valve facing the wall of the cylinder, which said rings, as the valve rotates, sweep the wall of the cylinder to circulate lubricant oil within the clearance space between the valve and the cylinder to thereby lubricate and seal the clearance space. The circulation of lubricant also has a beneficial cooling effect.