Class 277/453 - More than one oblique wall

Subclass of Class 277 - Seal for a joint or juncture
Definition: Oblique wall wherein the groove has tapered or inclined
No. of patents: 37
Last issue date: 07/31/2007

Browse patents
Browse applications

Number	Title	Issue Date
7241099	Center ball O-ring A self-retaining O-ring having at least two radial struts connectively extending from inside surfaces to a central sphere-shaped retainer. The top surfaces of the radial struts are formed below the top surfaces of the O-ring. The central sphere-shaped retainer is co...	07/10/2007
7229102	Fluid coolant union A coolant union includes a seal assembly having a first seal member and a non-rotating second seal member. At least one of the annular sealing surfaces presented by the rotating seal member and the non-rotating seal member is chamfered such that the chamfered sealin...	06/12/2007
7191875	Disc brake A disc brake includes a piston seal made of rubber that is shaped to fit into a seal groove on the inner surface of a cylinder of a caliper for a brake piston. To prevent braking effectiveness from being impaired, even if the temperature of a caliper rises in a disc...	03/20/2007
7188841	Secondary piston seal A secondary seal is provided for an internal combustion engine having a piston, cylinder bore, ring seal, secondary seal, and leak path. Forces are applied from the combustion side of the piston through a cylinder gap and a leak path to the secondary seal. The secon...	03/13/2007
7077402	Combined oil ring A combined oil ring 4 is comprised of an oil ring 5 having upper and lower rails 7 and 8, and an expander 6 for applying contact pressure radially outwards on the oil ring 5. The outer circumferential surface 11 of th...	07/18/2006
7017914	Piston assembly and method of manufacture A piston assembly having a piston and a piston ring. The ring mates to the piston in a groove on the outer surface of the piston. The ring includes two side walls that connect between inner and outer peripheral walls. The side walls converge outwardly at different a...	03/28/2006
6967843	System and method for dissipating heat from an electronic board Disclosed is an electronic board comprising a plurality of individual devices, each device having a plurality of connectors, the connectors mated to receptacles on the board, and a heat dissipating cover connected to the board and forming a cavity incarcerating the ...	11/22/2005
6959797	Piston-cylinder assembly with braking device In a piston-cylinder assembly comprising a cylinder in which a piston rod is installed with freedom of axial movement and which is filled with a blocking medium, a braking device becomes active when the piston-cylinder assembly moves faster than a defined speed and ...	11/01/2005
6682078	Ring groove for oil ring with coil expander of piston A ring groove for a two-piece oil ring of a piston is provided that has ring body equipped with a coil expander, wherein the ring body has an upper outer surface and a lower outer surface, both orthogonal to the axial direction of the piston. The ring gro...	01/27/2004
6547251	Ring groove for oil ring with coil expander of piston A ring groove for a two-piece oil ring of a piston is provided that has ring body equipped with a coil expander, wherein the ring body has an upper outer surface and a lower outer surface, both orthogonal to the axial direction of the piston. The ring gro...	04/15/2003
6361050	Oppositely angled piston ring grooves A piston is disclosed having both downwardly and upwardly inclined piston ring grooves, the grooves being angled less than approximately ten degrees with respect to a horizontally extending axis. In a preferred embodiment, the grooves are less than approx...	03/26/2002
5671928	Seal for chromatography column having ridges An annular seal for chromatography columns adapted for radial sealing with an inner cylindrical surface, having a compressive surface disposed on the inner annular edge of the seal, and a sealing surface disposed on the outer annular edge of the seal, whe...	09/30/1997
5538256	Method for producing a packing arrangement for a hydraulically operated apparatus and a packing arrangement The invention relates to a new method for producing a packing arrangement for a hydraulically operated apparatus. The method comprises the following steps: (a) producing a preshaped plastic piece of seal material; (b) compressing said preshaped piece at r...	07/23/1996
5450783	Low emission piston ring A piston assembly such as that used with an internal combustion engine includes an annular cylinder having an inner cylinder wall defining a bore. An annular piston is reciprocal along a longitudinally extending axis within the bore of the cylinder. The p...	09/19/1995
5435233	Banded piston A piston for use in a hydraulic cylinder which is subject to sudden and extremely high shock load pressures and high temperature operating conditions is provided with a plurality of interlocking axially-spaced circumferential grooves. A relatively thin, f...	07/25/1995
5398945	Piston ring of "Y" cross-section A piston ring having a "Y" cross section is received within an annular groove of a piston which is reciprocable within a cylinder. The piston ring is formed from a single strip of material with an integral inner end. Two flanges extend laterally outwardly...	03/21/1995
5345860	Banded piston and method of making A piston for use in a hydraulic cylinder which is subject to sudden and extremely high shock load pressures and high temperature operating conditions is provided with a plurality of interlocking axially-spaced circumferential grooves. A band of a heat-for...	09/13/1994
5303683	Piston with a profiled ring groove A piston with at least one compression ring, a top end and a longitudinally extending axis for an internal combustion engine. The piston includes at least one compression ring groove defined by first and second spaced lateral surfaces for receiving the at...	04/19/1994
5253877	Piston ring having tapered outwardly extending wiper A piston head assembly has one, two or more grooves to receive piston rings. One or more of the grooves may receive multiple piston rings. One of the piston rings may have a wiper extension on the lower outside edge of the ring either of metal or elastome...	10/19/1993
5001965	Piston and piston ring Pistons and associated piston rings are described for use in internal combustion engines. The piston and piston ring comprise an annular piston ring groove having two radially extending walls and an axially extending wall; a compression ring received in t...	03/26/1991
4795173	Double O-ring sealing arrangement A double O-ring sealing arrangement for a pressure responsive device wherein a storage-buffer chamber is provided between the double O-rings and is kept at a high pressure even when the actuating pressure for the pressure responsive device is dropped belo...	01/03/1989
4681326	Gas lubricated piston ring assembly A piston ring assembly wherein a piston member operating within a cylinder is lubricated by means of gas rather than oil films or solid lubricants. One ring (located near the lower end of piston) or two rings (one located near the lower end and the other ...	07/21/1987
4676143	Piston seal device for reciprocating compressor A piston seal device for a reciprocating compressor, having a piston slidably mounted in a cylinder bore and having a circumferential groove, and a resilient piston ring fitted in the circumferential groove of the piston and sealingly engageable with the ...	06/30/1987
4582330	Seal with cleft seating surface An annular or linear seal having a substantially K-shaped cross section. The seal with cleft seating surface provides a two-way pressure barrier when it is installed in a groove having a cross section of "sigma" shape, wherein the flat side of the K-shape...	04/15/1986
4466624	Sealing arrangement The disclosed arrangement is for sealing between two cylindrical bodies with an annular gasket ring in such a way that the seal is established only under conditions of a predetermined fluid pressure, so that at a lower pressure a flow is permitted across ...	08/21/1984
4418924	Bi-surface sealing mechanism with rolling/sliding O-ring A sealing mechanism positioned between a movable piston wall and stationary cylinder wall concentric therewith. The sealing mechanism includes a circumferential groove formed in one of the concentric walls, and an O-ring positioned in the circumferential ...	12/06/1983
4362304	Packing arrangement for a floating piston A packing arrangement for a floating piston dividing a cylinder into first and second chambers comprising a circumferential groove formed in the sliding surface of the floating piston; a circumferential elevation dividing the bottom of the groove into fir...	12/07/1982
4362136	Internal combustion engine piston A piston for medium-speed internal combustion engines having a ring groove for receiving a compression piston ring. The upper and lower flanks of the ring groove when the engine is cold deviate from a plane-parallel position in relation to the adjoining u...	12/07/1982
4355815	Piston ring A cross-sectionally U-shaped radially inwardly open piston ring for a piston slidably received in a cylinder and dividing the cylinder into a high-pressure side and a low-pressure side. The piston ring includes first and second radially inwardly projectin...	10/26/1982
4326724	Piston and seal assembly A one-piece piston is formed with an outwardly open annular groove by machining in which a piston ring is received sealingly relative to the wall of a cylinder. According to the invention the flanks of the ring and the groove are formed as frustocones at ...	04/27/1982
4299401	Piston ring and method of making same A piston ring is to be mounted in a groove in a piston. The piston ring has sidewalls for engaging sidewalls of the piston ring groove. Each of the sidewalls of the piston ring is hardened in respective localized areas. The localized areas each include a ...	11/10/1981
4280708	Sealing device for engine piston A sealing device for pistons comprises a piston-ring groove having upper and lower annular inclined surfaces forming a nearly V-shape in cross-section, a piston ring having an annular inclined surface that bears tightly against the lower annular inclined ...	07/28/1981
4253435	Diesel engine and piston assembly therefor An automotive diesel engine is provided with pistons which carry two compression rings and an oil control ring in the conventional manner, the cold end clearance of the second compression ring being greatly exaggerated compared to the cold end clearance o...	03/03/1981
4123072	Piston ring assembly and method of making same A piston and piston ring assembly wherein the piston is provided with a piston ring receiving groove having at least one inwardly converging side wall and an associated piston ring loosely received within the grove wherein the piston ring has at least one...	10/31/1978
4103594	Piston and scraper ring assembly A piston is formed with a peripheral groove for receiving a scraper ring, and an annular, axially extending recess is formed in the face of the scraper ring groove on the side thereof toward the piston crown and adjacent the piston wall, with the recess t...	08/01/1978
4052112	Piston seal A seal assembly for use on a piston having a piston seal groove with spaced shoulders formed therein comprising a deformable sealing ring adapted to be maintained in the groove and having inner and outer peripheral sealing portions, and side surfaces, the...	10/04/1977

PatentStorm

Quotables

PatentStorm News

Class 277/453 - More than one oblique wall