Bizarre Patents
Cloaking System Using Optoelectronically Controlled Camouflage
A Cloaking System designed to operate in the visible light spectrum, utilizes optoelectronics and/or photonic components to conceal an object within it.
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| Number | Title | Issue Date |
| 6860485 | Piston ring The present invention provides a piston ring comprising a piston ring main body and an expander ring arranged on an inner peripheral surface thereof, the expander ring comprising two oil expander rings, one of which is housed in a space in a spiral of the other. The... | 03/01/2005 |
| 6547250 | Seal assembly with two sealing mechanisms for providing static and dynamic sealing A seal assembly for providing sealing between a movable cylindrical body and a housing body comprises separate sealing mechanisms for providing static and dynamic sealing. The seal assembly is associated in fixed relationship with either the cylindrical b... | 04/15/2003 |
| 4813342 | Cryogenic pump multi-part piston with thermal expansivity compensated polytetrafluoroethylene seal rings A reciprocating pump for a cryogenic fluid includes a pump cylinder made of a material with low thermal expansivity, a piston displaceable in the pump cylinder, and self-lubricating piston rings made of polytetrafluorethylene held on the circumferential s... | 03/21/1989 |
| 4674754 | Back-up means for fluid cylinder and method for using same The back-up rings of the present invention are seated on opposite sides of a sealing ring within an annular groove of a hydraulic piston. The sealing ring is in frictional engagement with the interior surface of the hydraulic cylinder, and the back-up rin... | 06/23/1987 |
| 4615261 | Stirling engine with improved piston ring assembly An improved piston ring assembly, particularly for a Stirling engine, comprises a piston ring made from a TFE fluorocarbon such as Rulon which is disposed in a piston ring groove and is acted upon by an annular bi-metal element disposed between the groove... | 10/07/1986 |
| 4599936 | Integral strut and piston groove protector An integral strut and groove protector assembly is provided for incorporation within a light metal piston. The assembly includes a ring groove protector, an expansion control strut, and a connecting member connecting the groove protector and strut. All ar... | 07/15/1986 |
