Class 277/945 - Containing fluorine

Subclass of Class 277 - Seal for a joint or juncture
Definition: Consisting of elastomer or plastic wherein the elastomer
No. of patents: 39
Last issue date: 05/10/2005

Browse patents
Browse applications

Number	Title	Issue Date
6889984	Gasket for a disk apparatus, and cover, case and disk apparatus having the same A gasket includes a molded product containing a hydrocarbon-based organic elastic material and a fluorine-based resin having a vapor pressure of 1.3×10−8 Pa to 1.3 kPa at 100° C. ...	05/10/2005
6843392	Valve with a valve stem wiper A valve for use with an aerosol container including a valve body, a valve stem having a dispensing passage, and a sealing ring contacting the valve stem. The sealing ring includes a sealing portion. The valve stem is slidably moveable relative to the sealing ring fr...	01/18/2005
6673455	Flexure endurant composite elastomer compositions A flexure endurant composition of an elastomer reinforced with a continuous phase of microporous, expanded polytetrafluoroethylene (ePTFE) having a ratio of elastomer to PTFE of approximately 1:1 to 50:1 on a volume basis. The composite is prepared by a c...	01/06/2004
6607830	Composite material for metal gasket The composite material for a metal gasket includes a metal plate; a rubber layer fixed on the surface of the metal plate; and a solid lubricant layer fixed on the rubber layer. The solid lubricant layer contains polytetrafluoroethylene and a resin as main...	08/19/2003
6558782	Flexible graphite sheet and method of producing the same Flexible graphite article of manufacture made by compressing a mixture of expanded graphite particle and a fluoro-resin including ethylene-tetrafluoroethylene (ETFE) copolymers after additional heat treatment. An article of manufacture of a gasket materia...	05/06/2003
6513810	Sealing ring A sealing ring, including a support ring made of an impact-resistant material, and a lip ring made of PTFE, where the lip ring has a holding segment and a sealing segment, and where the holding segment is connected with the support ring by an intermediate...	02/04/2003
6474513	Valve for aerosol container The invention is directed to a valve for an aerosol container for dispersing a suspension or solution of a medicament in a liquid propellant contained therein. The valve comprises a valve body defining an aperture, a seal mounted at the aperture, and a va...	11/05/2002
6406031	Shaft seal A seal for a rotary shaft extending from a container containing agitated abrasive particulates through a wall of the container. The seal includes a first polymeric member around the shaft and in engagement with the wall of the container with the shaft rot...	06/18/2002
6357755	Sealing elements for dry running piston compressors A sealing element for a dry running piston compressor, in particular for a dry running oxygen compressor, contains perfluoroalkoxy-copolymer....	03/19/2002
6345740	Valve for aerosol container The invention is directed to a valve for an aerosol container for dispersing a suspension or solution of a medicament in a liquid propellant contained therein. The valve comprises a valve body defining an aperture, a seal mounted at the aperture, and a va...	02/12/2002
6328316	Rubber seal for semi-dynamic applications This invention is directed to a seal for installation into an annular groove of dovetail configuration that has a mouth, two side walls depending from the mouth that extend away from each other and a base wall that is connected to the two side walls there...	12/11/2001
6318603	Valve for aerosol container The invention is directed to a valve for an aerosol container for dispersing a suspension or solution of a medicament in a liquid propellant contained therein. The valve comprises a valve body defining an aperture, a seal mounted at the aperture, and a va...	11/20/2001
6030694	Rigid sheet polytetrafluoroethylene material A composite fluoropolymer material contains outer layers consisting essentially of conformable porous polytetrafluoroethylene (PTFE) and interior layers consisting essentially of rigid fluoropolymer material which may be a densified expanded PTFE, wherein...	02/29/2000
5945192	Sealing assembly for a solid polymer ion exchange membrane An assembly consisting of at least one seal layer and a solid polymer ion exchange layer wherein the seal layer covers essentially only the region of the ion exchange layer which is to be sealed. The seal layer is made of porous polytetrafluoroethylene fi...	08/31/1999
5879789	Rigid sheet polytetrafluoroethylene gasket An improved, chemically resistant gasket is constructed from a composite containing outer layers consisting essentially of conformable expanded polytetrafluoroethylene (PTFE) and interior layers consisting essentially of a densified expanded PTFE, wherein...	03/09/1999
5788216	Valve with perfluoroelastomer packing Valves having a stem packing of alternating layers of perfluoroelastomer and high temperature polymer provide outstanding sealing performance against corrosive fluids and high temperatures....	08/04/1998
5616403	Fluorosilicone coatings A thin fluorosilicone elastomer coating which prevents oil weepage problems with silicone rubber gaskets wherein the fluorosilicone elastomer coating contains a vinyl-containing fluorosilicone polymer cured with a hydrogen-containing siloxane/platinum gro...	04/01/1997
5564715	Tandem seal device for flow line applications A tandem seal device is provided for interposing and compressing between joined pieces of pipe in a flow line to prevent fluid leakage therebetween. The tandem seal device comprising a retainer body having an inner pair and an outer pair of continuous gro...	10/15/1996
5551707	Multi-material seal ring A composite seal of the type formed of a plurality of layers which provide a suitable fluid or gas seal between two rigid parts. The seal includes a layer of plastic material sandwiched between layers of elastomeric material, wherein the plastic and elast...	09/03/1996
5551706	Composite gasket for sealing flanges and method for making and using same Improved gasket material and method for use in sealing various flanged apparatus, such as found in distillation columns, glass lined vessels and transformer radiator flange seals. The gasket material comprises a cylindrical core of elongated polytetrafluo...	09/03/1996
5549276	Valve with perfluoroelastomer packing Valves having a stem packing of alternating layers of perfluoroelastomer and high temperature polymer provide outstanding sealing performance against corrosive fluids and high temperatures....	08/27/1996
5393076	Metal gasket with base plate having coatings of diverse thicknesses The invention is directed to an arrangement for sealing a clearance between a cylinder head and a cylinder block of an engine with a metal gasket clamped therebetween. The metal gasket is formed of a metallic base plate which has a plurarity of openings a...	02/28/1995
5368315	Non-stick automotive gaskets A non-stick automotive gasket which comprises a resilient material having a polymeric fluorocarbon coating thereon which is obtained by impregnating the resilient material with a saturant having dispersed therein polymeric fluorocarbon particles....	11/29/1994
5364676	Gasket-sealed casing for fixed disc memory unit A casing of a fixed disc memory unit consisting of a case body and a covering member jointly forming the casing with an air-tight sealing of a rubbery gasket therebetween can be imparted with very reliable moisture-proofness of sealing by forming the rubb...	11/15/1994
5354074	Metal gasket having first and second diversely vulcanized coatings A metal gasket having a base plate and coating layers deposited thereon. A first coating layer (10) having a first vulcanizing agent is deposited on a metallic base plate (1). A second coating layer (20) is deposited on the first coating layer (10) and ha...	10/11/1994
5326611	Cover-gasket assembly for hard disk device A cover-gasket assembly for a hard disk device which comprises a gasket applied to a predetermined position of a cover for the hard disk device, wherein the gasket is formed essentially of a cured product of a fluorosilicone rubber composition. The assemb...	07/05/1994
5269539	Hydraulic shaft seal A hydraulic shaft seal (10) has a first elastomeric part (40) and a second elastomeric part (42). The first elastomeric part (40) has a surface (54) for sealingly engaging the peripheral surface (56) of a shaft (14), and is formed of a vulcanizable elasto...	12/14/1993
5071142	Bi-directional substantially zero leakage path sealing assembly This invention relates to a fluid sealing mechanism for the inside diameter and or the outside diameter of a piston-cylinder arrangement. This device results in substantially zero seal leakage with low differential seal pressure required using only one pi...	12/10/1991
5015001	Low friction seal assembly A lubricant seal assembly adapted for installation in an annular clearance space between a shaft and a surrounding housing. The assembly includes inner and outer case members that can be press fit on the shaft and housing. An annular bumper element is arr...	05/14/1991
4865331	Differential temperature seal A simple, yet fluid tight seal for a cryogenic enclosure. The seal between two portions of the enclosure becomes tighter as the temperature is lowered because both portions contract against a third member which does not contract with temperature to the sa...	09/12/1989
4817969	Gasket and method of making same A gasket such as a cylinder head gasket molded of an amorphous fiber reinforced thermoplastic resin composite having at least 3% by weight of reinforcing fibers, and having an integral non-elastomeric sealing bead extending above the gasket body and surro...	04/04/1989
4811959	Seal assembly for well locking mandrel A seal assembly for use on a downhole well tool such as a wireline locking mandrel. The seal assembly includes a center element, multiple v-rings, wire mesh backup rings, and minimum clearance metal backup rings. The v-rings are manufactured from asbestos...	03/14/1989
4473231	Dynamic seal for subterranean well An assembly for use in establishing sealing integrity between an inner and outer conduit in a subterranean well is disclosed. A multi-component seal assembly having a plurality of individual seal units is assembled on the exterior of an inner tubular cond...	09/25/1984
4433847	Conduit sealing system The invention relates to an annular seal system designed for high pressure applications in subterranean wells. The annular seal system comprises a vertical stack of subassemblies. Each subassembly incorporates an annular sealing element formed from an ela...	02/28/1984
4431200	Back-up ring with slitted, folded portion for packing of hydraulic apparatus A back-up ring to prevent damage to a packing ring disposed in a groove on an internal piston within a cylinder. The back-up ring has a folded portion with concave and a convex surfaces to prevent damage to the ring when it is unfolded to enlarge the ring...	02/14/1984
4335887	Sealing device for use with flexible dynamometric bars A sealing device for a flexible dynamometric bar associated with a hydraulic power-lift of an agricultural tractor comprises an elastomer sealing ring formed in one piece by a collar element which surrounds the bar, and a bell-shaped element, which coaxia...	06/22/1982
4270761	Seal for geothermal wells and the like A seal for use in high temperature, aggressive environments, such as a geothermal well, including a ring-shaped element of a polymer, such as tetrafluoroethylene/perfluoro (alkyl vinyl ether) copolymer, which is substantially crystalline at room temperatu...	06/02/1981
4192519	High pressure multi-purpose seal A high pressure multi-purpose seal for use with pressure vessels and other equipment requiring demountable access fittings withstands pressures thousands of times above atmospheric pressure at both cryogenic and elevated temperatures. The cryogenic high p...	03/11/1980
4150836	Backed boss seal fitting A fitting for establishing a sealed connection with a boss which fitting includes a concentric depression about the innermost portion of its boss engaging surface, which retains a backup ring of special cross-section by means of an inwardly facing circumf...	04/24/1979

PatentStorm

Quotables

PatentStorm News

Class 277/945 - Containing fluorine