Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 7401587 | Gas and oil sealing in a rotary valve A sealing system for an axial flow rotary valve internal combustion engine comprising an array of floating gas seals and an optional oil sealing system. The array of floating seals surrounding a window (15) in the bore (11) of the cylinder head (10 | 07/22/2008 |
| 7328674 | Rotary valve system and engine using the same Rotary valve system for controlling communication with a port in an internal combustion engine which, in one disclosed embodiment, has a crankshaft, compression and expansion pistons connected to the crankshaft for reciprocating movement within compression and expan... | 02/12/2008 |
| 7287496 | Combustion engine valve system A valve system for a combustion engine that includes at least one combustion chamber is disclosed. The combustion chamber includes an intake port and an exhaust port. The valve system includes cylindrical valve shaft, the cylindrical valve shaft having a cylindrical... | 10/30/2007 |
| 7240654 | Engine valve assembly An inventive engine valve assembly may comprise a rotatable shaft having a fluid passageway extending therethrough, preferably in a direction orthogonal to the longitudinal axis of the shaft. The shaft may be positioned such that the fluid passageway is in communica... | 07/10/2007 |
| 7213546 | Engine airflow management system A rotary valve assembly for an internal combustion engine is herein disclosed. The rotary valve assembly comprises a valve body having a number of ports formed therethrough and a bore that intersects these ports such that a valve cylinder inserted into the bore may ... | 05/08/2007 |
| 7140342 | Slotted cylindrical tube rotary valve assembly This invention is a slotted cylindrical rotary valve assembly for an internal combustion engine, comprising of two sets of gear driven slotted cylindrical tubes in a cradle apparatus. Each set has two tubes located co-axially and rotates co-axially, and each tube is... | 11/28/2006 |
| 7121247 | Spherical rotary engine valve assembly A spherical rotary engine valve assembly for use in an internal combustion engine. ... | 10/17/2006 |
| 7111603 | Heli-shaft The HELI-SHAFT intake exhaust manifold system is comprised of a shaft with two helical and parallel runners cutout around its length. Surrounding the shaft is a sleeve of the same length to enclose and separate the two runners. The intake runner has an opening at th... | 09/26/2006 |
| 7089893 | Combustion engine valve system A valve system for a combustion engine that includes at least one combustion chamber is disclosed. The combustion chamber includes an intake port and an exhaust port. The valve system includes cylindrical valve shaft, the cylindrical valve shaft having a cylindrical... | 08/15/2006 |
| 7063065 | Four cycle, piston-driven, rotary ported intake and exhaust super atmospherically charged on demand internal combustion engine Disclosed in the field of the four-cycle reciprocating piston internal combustion engine is an invention for a rotary ported intake and exhaust system and super-atmospherically charged on demand engine. This invention replaces the inefficient reciprocating valve sys... | 06/20/2006 |
| 6994067 | Valve timing mechanism for a rotary valve internal combustion engine A rotary valve internal combustion engine comprising a crankshaft, a throttle (23), a throttle actuator, a cylinder head (7), a combustion chamber (8), and at least one rotary valve (1). The rotary valve (1) having at least two por... | 02/07/2006 |
| 6904885 | Osband super inductionexhaustion valveshaft' engine system, V-Type, flat-type, single-type, multi-cylinder four-cycle engine(s) An internal combustion engine; having block valley radiator core, with electrical water pump and air cooling fans, cooling and circulating water through block water passages, and having block valley oil reservoirs positioned under block valley radiator core for oil ... | 06/14/2005 |
| 6789516 | Rotary valve and valve seal assembly for rotary valve engine having hemispherical combustion chambers A valve arrangement for a rotary valve assembly for use in an internal combustion engine of the piston and cylinder type, wherein the cylinder head/combustion chamber is of the hemispherical type, the valve seals being positioned in angled relationship to the hemisp... | 09/14/2004 |
| 6763788 | Variable timing mechanism for a rotary valve A variable valve timing mechanism for an internal combustion engine comprising at least one rotary valve (1) having at least two ports terminating as openings (2, 3) in its periphery, a cylinder head (7) having a bore in which the rotary valve (... | 07/20/2004 |
| 6694942 | Four-stroke engine with rotary valve control The invention aims to provide a compact four-stroke engine with rotary valve control and petroil lubrication which has a simplified construction and allows the engine to be used in any position as a result of an improved lubrication system. To this end, t... | 02/24/2004 |
| 6467455 | Four-stroke internal combustion engine A four-stroke engine constructed using a gear with a port synchronized to the crankshaft by a power gear, and channels to direct the intake gases from the crankshaft housing into the combustion cylinder and to direct the exhaust gases out of the combustio... | 10/22/2002 |
| 6443116 | Valve device for an internal combustion engine The invention refers to a valve device for a combustion engine which includes a combustion chamber (1) and at least one channel (5) for communication between the combustion chamber (1) and an external space. The valve device includes a rotatable valve bod... | 09/03/2002 |
| 6443110 | Rotary valve head system for multi-cylinder internal combustion engines A rotary valve head system for a multi-cylinder engine includes hollow intake and exhaust rotary valve tubes having multiple apertures registerable with an engine intake or exhaust manifold according to a timing mechanism linked to the rotary valve tube. ... | 09/03/2002 |
| 6415756 | Spherical rotary engine valve An internal combustion engine valve comprising a shell having an outer surface. At least a portion of the outer surface is spherical in shape and a further portion of the outer surface is partially convex in shape and partially concave in shape. The shell... | 07/09/2002 |
| 6378481 | Four-stroke internal combustion engine with a rotary-spool valve In a four-stroke internal combustion engine with a rotary-spool valve as the inlet valve, the cylinder head has a valve shaft supported transversely with respect to the cylinder axis, which valve shaft has a passage extending inclined with respect to the ... | 04/30/2002 |
| 6321699 | Spheroidal rotary valve for combustion engines A rotary valve is disclosed suitable for replacement of poppet valves. The valve is temperature controlled through a combination of heat transfer techniques and means for reducing heat transfer between gas flows and the valve components. Assymetric geomet... | 11/27/2001 |
| 6293242 | Rotary valve system A complete rotary valve assembly and system is disclosed. The rotary valve includes a generally elongated valve body having first and second ends and a longitudinally extending axis of rotation. The rotary valve is mounted in a housing positioned above a ... | 09/25/2001 |
| 6098579 | Carbon fiber reinforced carbon composite rotary valve for an internal combustion engine 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 fro... | 08/08/2000 |
| 6006714 | Self-sealing rotary aspiration system for internal combustion engines The disclosed aspiration system provides an alternative to poppet valves for motor vehicle and other applications including gasoline, diesel, natural gas or other internal combustion engines. In one embodiment, an aspiration head (30) includes a housing d... | 12/28/1999 |
| 5941206 | Rotary valve for internal combustion engine A rotary valve for an internal combustion engine, comprising a cylindrical valve rotor having an inlet and an outlet port arranged in the circumferential surface thereof, and a plurality of sealing elements mounted on the valve rotor such as to subdivide ... | 08/24/1999 |
| 5906180 | Rotary valve assembly for an internal combustion engine An engine apparatus for an internal combustion engine which includes a first rotary valve having an indentation adapted to open an intake passage to allow air to be introduced into a combustion chamber, and a second rotary valve having an indentation to a... | 05/25/1999 |
| 5738051 | Four-cycle marine engine Disclosed herein is a four-stroke internal combustion engine comprising a common crankcase, a crankshaft extending in the crankcase, first and second cylinders respectively extending from the common crankcase in acute angular relation to each other and re... | 04/14/1998 |
| 5724926 | Rotary valve assembly for an internal combustion engine A mode changer for an internal combustion engine comprises a body member disposed within a housing. The body member may be adapted to communicate with an outer surface of a rotary valve. A resilient member may be disposed in the housing capable of biasing... | 03/10/1998 |
| 5690069 | Internal combustion engine having rotary distribution valves 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 consis... | 11/25/1997 |
| 5623901 | Time twister cylinder head for use in internal combustion engines A time twister cylinder head includes two rotary valves driven by a timing belt coupled to the engine crankshaft by belts and pulleys to describe a desired rate of rotation of the valves with respect to rotation of the crankshaft. Each valve is generally ... | 04/29/1997 |
| 5579730 | Rotary valve head assembly and related drive system for internal combustion engines A rotary valve head assembly including a split head assembly, a rotary spool assembly, spool drive assemblies, and bearing and spool lubrication components. The split head assembly has bores for containing the spool assembly, bearings and spool seals, and... | 12/03/1996 |
| 5503124 | Rotary valve with seal supporting tongue A rotary valve (10) for an internal combustion engine, of the hollow cylindrical type, having one or more openings (14) arranged to pass periodically over a window in the cylinder head bore, characterized in that the valve (10) also incorporates at least ... | 04/02/1996 |
| 5490485 | Rotary valve for internal combustion engine A rotary valve for use in an internal combustion engine and capable of providing high volumetric efficiency is disclosed. The rotary valve generally includes a cylindrical tube having an outer wall that defines intake and exhaust ports positioned to commu... | 02/13/1996 |
| 5410996 | Rotary valve assembly used with reciprocating engines An improved rotary valve assembly that is rotated by chain, belt or gears that are driven by a reciprocating engine which has intake and exhaust rotary valves that have ports and interior channels that are sequentially positioned to allow the intake and e... | 05/02/1995 |
| 5361739 | Spherical rotary valve assembly for use in a rotary valve internal combustion engine A spherical rotary valve assembly for an internal combustion engine of the piston and cylinder type wherein the spherical rotary valve assembly is positioned within a split cylinder head having an upper and lower section such that when secured defines cav... | 11/08/1994 |
| 5230314 | 4-Cycle engine A 4-cycle internal combustion engine including a crankcase, a cylinder, a cylinder head, a piston adapted to reciprocate within the cylinder, a combustion chamber formed by the piston, the cylinder and the cylinder head, and a crankshaft connected to the ... | 07/27/1993 |
| 5052349 | Rotary valve for internal combustion engine The invention herein is a rotary valve apparatus for a cylinder of an internal combustion engine, containing a valve housing having an internal axial bore and an opening over the combustion chamber, a circumferential bearing positioned within the bore, an... | 10/01/1991 |
| 4998512 | Exhaust port control system for two stroke engine A two cycle crankcase compression diesel engine having a supplemental exhaust port system that is formed in a straight line perpendicular to the cylinder bores and which intersects the main exhaust ports. An exhaust control valve arrangement is provided f... | 03/12/1991 |
| 4949685 | Internal combustion engine with rotary valves An internal combustion engine with a novel system of rotary valves is disclosed. A conventional engine has a pair of hollow tube rotary valves for each head, one tube being employed as an intake and the other tube as an exhaust. Slots are strategically pl... | 08/21/1990 |
| 4926809 | Internal combustion engine with rotary valve An internal combustion engine having a combustion cylinder, a piston moving within the cylinder, an intake manifold through which air flows into the cylinder, a fuel control for controlling the flow of fuel into the cylinder, and an inlet valve arrangemen... | 05/22/1990 |
