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Class 277/536 - Fibrous component


Subclass of Class 277 - Seal for a joint or juncture
Definition: Composite wherein the composite includes a plurality of
No. of patents: 29
Last issue date: 04/08/2008


NumberTitleIssue Date
7353645Material for gland packing and the gland packing
A reinforcing member made from a fibrous material and disposed at least on one face of a strip-like expanded graphite to form a strip-like base member. The base member is stranded to be formed as a cord-like member. At this time, one side end edge of the base member...
04/08/2008
7309520Flat packing and method for the production thereof
A flat gasket made up of at least one layer of nonwoven fabric consisting of a sheet of asbestos-free fibers or fiber mixtures and impregnated with a polymer, the sealing element consisting of at least one polytetrafluoroethylene-impregnated nonwoven fabric. ...
12/18/2007
7229077Ordered elastomeric composite material
Ordered elastomeric composites comprise an ordered arrangement of a number of first elastomeric phases distributed uniformly within a continuous matrix second elastomeric phase. The second phase can be formed from an elastomeric material that is relatively harder th...
06/12/2007
7121554High-pressure sealing
In a high-pressure cylinder with an axial plunger, a seal assembly for scaling the gap between the cylinder wall and the plunger. The assembly is disposed in an annual recess in the wall having an open end and a bottom opposite thereto, and comprises a plunger-seali...
10/17/2006
7097179Apparatus and method for manufacturing rubber-wrapped spiral wound gaskets
A spiral wound gasket made of an elongate band with a portion of the elongate band jacketed by a resilient filler material, the jacketed elongate band wrapped in a plurality of overlapping turns to define a radially thick reinforcing member with the band in each tur...
08/29/2006
7086650Gland packing
The present invention provides a gland packing in which impairment of the sealing performance due to cracks that unwillingly occur in an end portion in the width direction of an expanded graphite tape of a braiding yarn in the gland packing can be suppressed. In gla...
08/08/2006
6926285Jacketed spiral wound gasket
A spiral wound gasket made of an elongate band jacketed by a sealing material, with the elongate band wrapped in overlapping turns to define a radially thick gasket with an inner diameter for being exposed to a material to be sealed and an outer diameter, in which t...
08/09/2005
6880830Sealing device
A sealing device for sealing off an opening between a shaft and a grease-lubricated split bearing housing comprises two halves divided by a diametrical cut and each having a main body arranged in a circumferential groove in the bearing housing opening. The sealing d...
04/19/2005
6568689Gland packing
The present invention provides a gland packing in which impairment of the sealing performance due to cracks that unwillingly occur in an end portion in the width direction of an expanded graphite tape of a braiding yarn in the gland packing can be suppres...
05/27/2003
6273431Forged valve stem packing set
A three-ring packing set for a forged valve stem is disclosed which includes upper and lower adapter rings formed from fiber reinforced graphite tape and each having a first density and a first axial thickness, and an intermediate preform ring formed from...
08/14/2001
6270083Packing yarn made of graphite foil and plastic foil and method of manufacturing a packing yarn
A packing yarn and a method of manufacturing a packing yarn utilize at least two bands that are at most 5 mm wide and are joined together by a yarn manufacturing method. The bands are formed of a laminate having at least one layer of flexible graphite foi...
08/07/2001
6267383V-shaped seal with anti-extrusion section
A sealing-device having a body section and an anti-extrusion section is shown, the body section being disposed on top of the anti-extrusion section. The body section includes sealing surfaces for enclosures in which the sealing device is located. the anti...
07/31/2001
6105596Sealing system
A sealing assembly with a first molded graphite ring of generally triangular cross section, one side of which is in use perpendicular to the longitudinal axis of a rotatable and/or slidable shaft, the surface of which is to be sealed in an axial direction...
08/22/2000
5823540Polymer reinforced fluid seal
A fluid seal for ball control valves formed from a composition comprising a fluorinated resin, a reinforcing polymer, and, optionally, molybdenum disulfide, which has been compression molded in a tube mold, heat sintered and annealed. Such a formed ball s...
10/20/1998
5788216Valve 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
5605341Knitting yarn for gland packing and gland packing made from the knitting yarn
A knitting yarn for gland packing according to the present invention has a composite structure comprising: a string-like body formed by folding an expanded graphite tape in the widthwise direction thereof thus forming folded layers; a first reinforcing me...
02/25/1997
5549276Valve 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
5538256Method 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
5493951Lubrication and seal ring assembly for pump
A fluid end including a cylinder has a bore extending therethrough. A plunger is reciprocally disposed in the bore. A packing element is disposed in the bore to seal the annular space between the plunger and bore and includes a lubrication ring formed of ...
02/27/1996
5188376Gland packing and method of producing same
The packing according to the present invention is composed of a string-like body formed of an elongated tape-like packing material having at least one layer is repeatedly folded in direction at a right angle to the longitudinal direction thereof in a zigz...
02/23/1993
4789168Sealing bush with a sealing packing for high pressures and temperatures
A sealing bush for a moving part has a packing made up of two concentric layers which are bonded to one another. The outer layer consists of a material such as graphite having good resilience. The inner layer, on the other hand, consists of a material suc...
12/06/1988
4577873Dual valve stem packing arrangement
Valve packing comprising one lower, adjustable, compressible, solid ring set followed by an upper, non-adjustable, pre-compressed, flexible, plastic v-ring set; both packing sets inter-spaced by a slidable gland having an additional outer elastomeric seal...
03/25/1986
4529662Asbestos-free sheet material for spiral-wound gaskets
Non-asbestos flexible sheet material suitable for use in the manufacture of spiral wound gaskets is made by dewatering on a water-permeable conveyor a layer of aqueous slurry and compressing and drying the dewatered layer, the aqueous slurry employed bein...
07/16/1985
4431698Waterproof packing
A low-friction, water- and steam-resistant packing suitable for both static and dynamic applications includes inorganic fiber selected from the group consisting of chemical, electrical, structural and alkali resistant glasses, ceramic, quartz, carbon and ...
02/14/1984
4379558Anti-extrusion packing member
A seal or packing for use in dynamic or static applications subject to stretching, twisting or deforming forces, includes a body member forming the sealing and packing surfaces, together with an anti-extrusion reinforcing element incorporated in the body ...
04/12/1983
4306728Sliding surface packing
A sliding surface packing for use in pumps and particularly high-pressure pumps between spaced apart pair of prop rings and a pump plunger and a pump cylinder wall comprises a plurality of packing rings arranged between the prop rings. At least one of the...
12/22/1981
4214761Packing construction
A seal or packing member, in annular or elongate strip form, the packing member having at least a partially layered construction comprised of at least one layer of a fabric-type material and another layer comprised of a binder having a fibrous filler gene...
07/29/1980
4062551Cable seal unit for earth-boring drill strings
The unit comprises a hollow cylindrical shell in the wall of which is formed an aperture through which an electrical cable passes. The cable thus passes from the ground surface on the outside of the drill string, but enters into the interior of the drill ...
12/13/1977
4006881Fluid-tight packing for closure devices and devices fitted with said packing
At least part of a packing which is compressed between two components of a closure device such as a cock or valve is cut from a sheet of carbonaceous material formed by the association of carbon fibers with expanded graphite and compacted at least to a pa...
02/08/1977
 
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