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| Number | Title | Issue Date |
| 7980208 | Reciprocating engine A reciprocating engine (10) operating on the two stroke cycle, comprising a pair of stationary and substantially concentrically aligned mutually opposed pistons (13, 15) and a sleeve (11) adapted to reciprocate about these static pistons. The re... | 07/19/2011 |
| 7810458 | Reciprocating sleeve engine A reciprocating engine (10) operating on the two stroke cycle, comprising a pair of stationary and substantially concentrically aligned mutually opposed pistons (13, 15) and a sleeve (11) adapted to reciprocate about these static pistons. The re... | 10/12/2010 |
| 7703422 | Internal combustion engine The proposed internal combustion engine may be characterized by two mobile opposite cylinders rigidly attached to each other. Said cylinders move simultaneously in the same direction. The motions of said cylinders are transferred via a connecting rod and hinges to t... | 04/27/2010 |
| 7584725 | Internal combustion engine An internal combustion engine wherein a combustion chamber is formed by moveably fitting a bottomed tubular moveable sleeve on a stationary piston in which a valve mechanism is incorporated, and the moveable sleeve is connected to a crankshaft via a connecting rod. | 09/08/2009 |
| 7481187 | System and method for supplying auxiliary power to a large diesel engine A system and method for starting a large diesel engine using at least one hydraulic motor includes an auxiliary power unit having a hydraulic pump for driving a hydraulic motor coupled to the diesel engine. The hydraulic pump may automatically pump oil from the dies... | 01/27/2009 |
| 7004120 | Opposed piston engine A four-stroke opposed piston engine includes a rotating cylinder with a circumference and an aperture defined through the circumference, first and second opposing pistons, optional first and second opposing cylindrical spacers, first and second opposing piston caps,... | 02/28/2006 |
| 6651604 | Delivery device for removing interior engine deposits in a reciprocating internal combustion engine Disclosed is an apparatus and application tool useful for removing engine deposits in a reciprocating internal combustion engine by directing a substantial portion of a cleaning composition to an interior cavity of the engine through an access port wherei... | 11/25/2003 |
| 5647307 | Valving for dual compression/expansion engine and method of assembling the same An improved valving configuration for dual compression/expansion engines having multiple, relatively small diameter intake transfer valve assemblies disposed about a fuel injection apparatus in the internal housing, a relatively large diameter exhaust tra... | 07/15/1997 |
| 5623894 | Dual compression and dual expansion engine An improved dual compression and dual expansion internal combustion engine defined by an external housing with a first piston sleeve and a second piston sleeve, a reciprocating internal housing disposed within the external housing, the internal housing ha... | 04/29/1997 |
| 5054438 | Floating cylinder internal combustion engine A two stroke cycle internal combustion engine providing a cylinder movably held within the cylinder block. The ports operation timing is controlled by the longitudinal movement of the cylinder.... | 10/08/1991 |
| 4759318 | Differential piston and valving system for detonation device A purging and recharging system improves the repeating of detonations from a detonation device 10 having a detonation chamber 20 separated from an ignition chamber 25 by a detonation plate 22 having an opening 23 through which a flame jet can pass from ig... | 07/26/1988 |
| 4699093 | Light weight internal combustion engine with stationary pistons and rotary valves The engine of this invention comprises at least one hollow cylindrical member within which is a non-moveable disc that separates the cylinder into two opposite bores. A stationary piston is slideably contained in each bore. Each bore-piston combination co... | 10/13/1987 |
| 4625685 | Machine with double acting box piston The machine is an engine or pump with a box shaped piston positioned between two stationary sidewalls. Opposite inward ends and inwardly facing moving sidewalls of the piston act with the two stationary case sidewalls and a block-shaped central head to de... | 12/02/1986 |
| 4437437 | Dual-expansion internal combustion cycle and engine A novel internal combustion cycle and internal combustion engine operating thereon. Expansion of the hot combustion gases is controllably achieved in a primary combustion/expansion chamber and a secondary expansion chamber in a manner to reduce engine exh... | 03/20/1984 |
| 4331108 | Radial engine An engine comprising; a substantially cylindrical housing; a rotor rotatably mounted in said housing on an axis parallel with the longitudinal central axis of the housing to execute an orbital motion within the housing, a plurality of tubular elements eac... | 05/25/1982 |
| 4325331 | Dual-expansion internal combustion cycle and engine A novel internal combustion cycle and internal combustion engine operating thereon. Expansion of the hot combustion gases is controllably achieved in a primary combustion/expansion chamber and a secondary expansion chamber in a manner to reduce engine exh... | 04/20/1982 |
| 4261303 | An internal combustion engine Improvements in an internal combustion engine comprising an elongated stationary piston having an elongated double ended movable piston coaxially mounted thereon for reciprocation. Two stationary combustion cylinders reciprocably receive the opposite ends... | 04/14/1981 |
| 4182283 | Combustion chamber and piston therefor An improved combustion chamber and piston therefor, for an internal combustion engine of the type having a cylinder block and a cylinder head positioned thereabove and having pistons slideably mounted in suitable hollow cylinders in the cylinder block. Th... | 01/08/1980 |
| 4156410 | Internal combustion reciprocating engine An internal combustion engine having a housing defining a pair of axially aligned and opposing cylinders with a lubricant chamber therebetween, a stationary piston in the housing extending through the lubricant chamber and having opposite ends disposed wi... | 05/29/1979 |
| 4010675 | Two stroke mechanism with rotary piston and cylinder-piston movement A two stroke mechanism is described which has rotary moveable piston and cylinder-piston elements. The piston and cylinder-piston elements both rotate within a stationary body forming two variable volume chambers. The first variable volume chamber formed ... | 03/08/1977 |
| 3974803 | Internal combustion engine with gyratory piston and cylinder movement An internal combustion engine wherein a piston element with rectilinear sides operates within a movable cylinder-piston element having rectilinear sidewalls, and wherein the combustion chamber has a polyhedral shape. Rotatable crankshafts are mounted in e... | 08/17/1976 |
