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| Number | Title | Issue Date |
| 7318712 | Rotary piston machines comprising a displaceable inner housing In a rotary piston machine with an inner housing and rotors, the axes of the rotors are disposed at an angle to one another in order to equalize manufacturing tolerances and to reduce gap losses of such machines. ... | 01/15/2008 |
| 7059294 | Orbital engine An engine is disclosed including at least one piston which is positioned within a toroidal piston chamber. A method of operating an engine is disclosed wherein a piston is advanced in a toroidal piston chamber past a first valve and the first valve is closed to form... | 06/13/2006 |
| 6975935 | Method and device for monitoring the direction of rotation of a piston engine A method and device for detecting the rotation direction of a piston engine, internal combustion engine or piston compressor. The piston engine includes at least one cylinder, a piston movable back and forth in the cylinder, a cylinder chamber formed inside the cyli... | 12/13/2005 |
| 6247443 | Rotary internal combustion engine and rotary internal combustion engine cycle An internal combustion rotary engine (1) comprises an engine casing (300) in which is rotatably mounted a cylindrical rotor assembly (2) co-axially fixed to a drive shaft (6). The rotor (3) receives a plurality of reciprocating vanes (9, 10, 11) in a stag... | 06/19/2001 |
| 6032636 | Disc-type rotary engine A rotary disc having at least two radial concave portions and two radial convex portions on one end is opposed at the concave/convex surface to a concave/convex surface of a non-rotary disc having the concave/convex surface of the same shape, and one of t... | 03/07/2000 |
| 5836283 | Disc-type rotary engine A rotary disc having at least two radial concave portions and two radial convex portions on one end is opposed at the concave/convex surface to a concave/convex surface of a non-rotary disc having the concave/convex surface of the same shape, and one of t... | 11/17/1998 |
| 4819594 | Reversible rotary internal combustion engine A reversible rotary internal combustion engine comprising a stator which defines a cylindrical chamber (43), a drive shaft (1) extending coaxially through the chamber, a rotor (2) comprising a cylindrical hub mounted coaxially on the drive shaft and a rot... | 04/11/1989 |
| 4683852 | Internal combustion engine having rotating pistons A novel internal combustion engine has a single toroidal cylinder and a set of pistons, e.g. four, which are set in a circle and rotate in the toroid. The toroid can be interrupted by separating walls to form, with the pistons, compression or expansion ch... | 08/04/1987 |
| 4548171 | Rotary engine The rotary engine has a circumferential main chamber and at least one smaller combustion chamber spaced from the main chamber. The rotor includes a plurality of radially-projecting sealing members in spaced relationship thereabout for maintaining a fluid-... | 10/22/1985 |
| 4414938 | Rotary internal combustion engine A rotary type internal combustion engine including a cylindrical rotor having a diametrical slot parallel with the longitudinal axis of the rotor and a vane movably mounted in the vane groove and constituted by two vane parts opposed to each other at the ... | 11/15/1983 |
| 4072132 | Rotary internal combustion engine Presented is a rotary internal combustion engine that utilizes autoignition of fuel and water injection into the combustion chamber for greater efficiency and reduction of pollutants.... | 02/07/1978 |
