Bizarre Patents
A beach chair which can be adapted for a woman who is pregnant and wishes to sunbathe in the prone position.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7152706 | Induction system for a four cycle engine A four cycle engine having at least one cylinder unit is disclosed. The engine includes a continuously variable transmission (CVT) connected to the engine on one side of the engine. An air box is also provided that is located on the same side of the engine as the CV... | 12/26/2006 |
| 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 |
| 5799628 | Internal combustion engine with rail spark plugs and rail fuel injectors A two stroke cycle reciprocating piston internal combustion engine having horizontally opposed cylinders and pistons, scotch yokes and self adjusting sliding blocks for the interface between the scotch yokes and crankpins, and secondary cylindrical piston... | 09/01/1998 |
| 5592904 | Method and devices for controlling the combustion of a four stroke engine Method and devices for controlling the combustion of a four-stroke engine. For each cylinder, in addition to the main combustion chamber, a smaller secondary combustion chamber is provided. The secondary combustion chamber is completely separate and indep... | 01/14/1997 |
| 5406912 | Internal combustion engine An internal combustion engine has at least one set of first and second cylinders (12,14), the first cylinder (12) having a larger swept volume than the second cylinder (14), and respective first and second pistons (16,18) movable in the cylinders. The pis... | 04/18/1995 |
| 5337706 | High-performance internal-combustion engine, particularly of the four-stroke type High-performance internal-combustion engine, particularly of the four-stroke type, including an engine block inside which combustion chambers are formed; each chamber slidingly accommodates a piston and is connected to at least one inlet duct for the air-... | 08/16/1994 |
| 5123334 | Pump or motor with secondary piston connected to guide member of a main piston Pump or motor comprising at least one cylinder housing being closed at both ends and a piston body received in said housing so that at both ends of said housing a working compartment is formed, the piston body being provided with a cavity shaped such that... | 06/23/1992 |
| 4854274 | Power booster internal combustion engine flywheel Due to the present energy problems there is a need for a more efficient internal combustion engine. Herein is disclosed a means of making the engine more efficient through use of a flywheel apparatus. The flywheel provides a means of allowing the cranksha... | 08/08/1989 |
| 4753198 | Compression ratio control mechanism for internal combustion engines An intake manifold arrangement for internal combustion engines whereby the combustion chamber can be supercharged without the use of mechanical gears and/or pumps. A pressure chamber is mounted upon the combustion chamber and communicates with the combust... | 06/28/1988 |
| 4580532 | Multiple piston expansion chamber engine Multiple expansion chambers are configured to partially expand the combusted charge in the combustion chamber and then to complete the expansion process using a supplemental expansion chamber with chamber isolation designs.... | 04/08/1986 |
| 4570580 | Multiple piston expansion chamber engine Multiple expansion chambers are configured to partially expand the combusted charge in the combustion chamber and then to complete the expansion process using a supplemental expansion chamber with chamber isolation designs.... | 02/18/1986 |
| 4506634 | Internal combustion engine An engine in which the compression and expansion functions are separated to enable: higher efficiency by eliminating inlet throttling, providing stable lean combustion of premixed or injected fuel, by allowing more complete expansion and reduced heat tran... | 03/26/1985 |
| 4503815 | Stratified charge variable compression ratio engine An engine includes an engine block (10) provided with cylinders (12,14) having two pistons (16,18) and a cylinder head (19) having a piston (20) biased by means of torsion bars (24). The biased piston (20) is held in position by an arm (22) which is restr... | 03/12/1985 |
| 4489681 | Multiple piston expansion chamber engine A multiple piston expansion chamber internal combustion engine wherein the charge is ignited and combusted (or partially combusted) and partially expanded by one or more of the pistons and after partial expansion thereof additional pistons augment the exp... | 12/25/1984 |
| 4307687 | Internal combustion engines Each pair of piston and cylinders is twinned so that one acts as a primary or master piston and cylinder and the other as a secondary piston and cylinder. The pistons move in unison through the conventional four strokes of the Otto cycle. A transfer valve... | 12/29/1981 |
| 4168678 | Internal combustion engine with auxiliary piston for generating turbulence An internal combustion engine is provided with an auxiliary piston reciprocating within an auxiliary chamber for generating turbulence in a gas mixture contained within a main combustion chamber. Forward motion of the auxiliary piston causes the injection... | 09/25/1979 |
| 4106445 | Reciprocating piston machine with complete combustion system A reciprocating piston internal combustion machine is provided in which the components are designed and constructed in a manner to give complete combustion by providing a stratified charge which is mixed early in the combustion process.... | 08/15/1978 |
| 4005687 | Concealed regenerative combustion engine This invention relates to a combustion engine which is cooled internally. Combustion occurs in primary combustion chambers and the gas combustion products are released into secondary chambers after combustion to mix with cooler fluids. These fluids cool t... | 02/01/1977 |
| 3961607 | Internal combustion engine An internal combustion engine construction to improve thermodynamic efficiency by providing, in addition to the standard cylinders and pistons, a supplemental cylinder connected to each combustion chamber of each cylinder and, a piston in each supplementa... | 06/08/1976 |
