Patents Examined by E Peavey
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Patent number: 6715766Abstract: A packing segment for an annular seal ring assembly for use in a hot gas path of a turbomachine, includes a sealing face mounting a plurality of axially spaced sealing teeth; a necked-in center portion radially outward of the sealing face; and a mounting portion radially outward of the center portion. At least one steam feed hole extends angularly from a radially outermost face of the segment to a location along a side of the center portion such that, in use, at least a portion of the feed hole is exposed to hot gas in the hot gas path for flow through the feed hole to a cavity behind the segment.Type: GrantFiled: October 30, 2001Date of Patent: April 6, 2004Assignee: General Electric CompanyInventors: George H. Kirby, III, Richard Chevrette, Matthew Patrick Boespflug
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Patent number: 6712365Abstract: An over-molded gland seal for producing both a fluidic seal and a fluid conduit. The apparatus includes a substrate having an elastomeric layer over-molded thereon and an elastomeric gland seal molded into the over-molded layer. Another aspect of the apparatus includes a host-part having a raised wall thereon, said host-part receives the elastomeric gland seal and compresses the gland seal with the raised wall. The substrate, the gland seal, and the host-part define an enclosed region. To form the fluid conduit, the apparatus includes a fluid inlet port and a fluid outlet port that communicate with the enclosed region.Type: GrantFiled: June 20, 2002Date of Patent: March 30, 2004Assignee: Hewlett-Packard Development Company, L.P.Inventors: Louis Barinaga, Daniel D. Dowell, James P. Kearns
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Patent number: 6708984Abstract: A seal assembly comprising a main O-ring seal element for engaging in a fluid tight manner opposed surfaces of two objects to be sealingly connected together and a barrier element positioned to protect all or a substantial portion of the surface of the main O-ring seal element against contact by the fluid when passing through the seal assembly from one object to the other object.Type: GrantFiled: October 26, 2000Date of Patent: March 23, 2004Assignee: The BOC Group plcInventors: Phillip North, Stephen Ellis Ormrod, Christopher Mark Bailey
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Patent number: 6708986Abstract: This invention relates to a device a metod for ductchs sealing composed by a sealed bag, with no valve and or accesses, divided by a separator device wich can be un-welded before the application, containing separated chemical substances able to react and generate gas or any other action able to generate an inner pressure into the bag.Type: GrantFiled: February 14, 2002Date of Patent: March 23, 2004Assignee: Megarad SrlInventors: Giuseppe Natale, Xinsheng Bian
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Patent number: 6702295Abstract: A dynamic seal assembly has an outer carrier member formed of one-piece having an outer flange, an inner flange, and an intermediate portion presenting first and second shoulders. A PTFE seal member is disposed about the second shoulder and is compressed axially by a case member which, while the PTFE seal is compressed, is staked to the carrier to secure the seal. The carrier has an axially outwardly facing annular pocket accommodating a foam dust excluder into which a flange of a wear sleeve extends to protect the PTFE seal from debris. Additionally, the seal has a clamping ring having an axially extending first leg providing a second mating surface radially inwardly and generally parallel to the first mating surface of the outer member.Type: GrantFiled: October 22, 2002Date of Patent: March 9, 2004Assignee: Federal-Mogul World Wide, Inc.Inventors: John Christopher Kapcoe, Benjamin Cutler Clark
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Patent number: 6702301Abstract: An active window seal assembly is disclosed that operatively engages a movable window when the window is stationary and disengages the window when the window is in motion. The seal assembly comprises a stationary frame, a movable lip that is operatively connected to the stationary frame, and a cavity disposed between the stationary frame and the movable lip. Several configurations provide for movement of the movable lip when the movable window is in motion. The first configuration allows the cavity to inflate with air, thus forcing the movable lip away from the window. A second configuration provides that the air in the cavity be evacuated, thus pulling the movable lip away from the window. A third configuration provides that a voltage be applied to the stationary frame and the movable lip to create an electric field. The electric field draws the movable lip toward the stationary frame and away from the movable window.Type: GrantFiled: September 23, 1999Date of Patent: March 9, 2004Assignee: Meritor Light Vehicle Systems, Inc.Inventors: Timothy Davies, Charles Hopson, Christos Kyrtsos, Joseph Tyckowski, Francois Breynaert
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Patent number: 6698762Abstract: A lubricant leakage stop is provided on the shaft of a rotary device in the form of an annular groove in the shaft. In one embodiment the annular groove is formed with an annular inner surface at the bottom of the groove and with an annular intermediate surface positioned between two portions of the annular inner surface. The intermediate surface has a larger diameter dimension than the two inner surface portions on the axially opposite sides of the intermediate surface. The intermediate surface also has a smaller diameter dimension than that of the two portions of the shaft outer surface on axially opposite sides of the groove. In a second embodiment, the annular groove is formed with an annular inner surface that tapers from the bottom of the groove outwardly to the outer surface of the shaft on one side of the groove.Type: GrantFiled: July 10, 2002Date of Patent: March 2, 2004Assignee: Emerson Electric Co.Inventors: Barry M. Newberg, Gary W. Borcherding
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Patent number: 6698763Abstract: A piston ring having a stainless steel base material, the base material having an upper surface, a lower surface, an inner circumferential surface and an outer circumferential surface, the surfaces each having a nitride layer formed thereon, the nitride layer each first being formed to have a compound layer and a diffusion layer, the diffusion layer of the outer circumferential surface then being exposed by removing the compound layer of the outer circumferential surface, the exposed diffusion layer thereafter having an ion-plating deposition layer of hard ceramic formed thereon, the piston ring wherein the exposed diffusion layer is entirely removed on the upper and lower corners of the upper and lower surface and the outer circumferential surface by chamfering corner regions of the nitride layer located around the upper and lower corners before the ion-plating deposition layer is formed.Type: GrantFiled: February 6, 2002Date of Patent: March 2, 2004Assignee: Nippon Piston Ring Co., Ltd.Inventors: Katsuaki Ogawa, Minako Chinou
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Patent number: 6695320Abstract: A gasket material for sealing between two members. The gasket material includes a flexible, woven skeletal member. Enclosing the skeletal member is a flexible, compressible resilient body member having a tacky outer surface, the tacky outer surface for engagement between the two members. In a preferred embodiment the flexible skeletal member is closer to a top surface of the resilient body then it is to a bottom surface of the resilient body. The resilient body may be comprised of urethane. The flexible skeletal member may be comprised of a metallic or a non-metallic material.Type: GrantFiled: August 5, 2002Date of Patent: February 24, 2004Inventors: Jeff Busby, Lane Smith
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Patent number: 6695318Abstract: An arrangement for improved thermal and/or electrical coupling between parts disposed in electronic device processing equipment is provided. In an illustrated embodiment, an improved coupling between a chamber liner and a chamber wall is provided which can be utilized in semiconductor processing equipment. The arrangement includes a compressible coupling or gasket which is compressed between a wedge ring and the chamber wall. The chamber liner is coupled to the wedge ring, so that the chamber liner is coupled to the chamber wall by way of the wedge ring and compressible coupling.Type: GrantFiled: January 17, 2001Date of Patent: February 24, 2004Assignee: Tokyo Electron LimitedInventors: Stephen N. Golovato, Arthur H. Laflamme, Jr., Jay R. Wallace
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Patent number: 6695314Abstract: The invention relates to a brush seal for sealing a rotor against a stator. A brush housing is provided for fastening brushes whose free ends are directed towards the stator or rotor. The brush housing is held on the rotor or stator and has a support plate. In the brush seal the free ends of the brushes are provided with a slide-ring to improve the sealing effect and reduce the wear.Type: GrantFiled: February 14, 2002Date of Patent: February 24, 2004Assignee: MTU Aero Engines GmbHInventors: Alfons Gail, Klemens Werner
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Patent number: 6695315Abstract: The invention relates to a single seal, and more specifically to a seal for a rotary shaft extending through a wall, e.g. that of a pump housing. The single seal exhibits one single sealing location between a fixed and a rotary sealing ring. The seal is fitted onto the wall by means of a flange in order to seal off a chamber inside the wall against the shaft and towards the exterior. According to the invention, the single seal exhibits an outer sealing ring (1) and an inner sealing ring (2). These sealing rings are in sliding and sealing contact with each other. The outer sealing ring (1) is fastened to the flange (12) and the inner sealing ring (2) is fastened to an axially displaceable sleeve (8). The sleeve is in turn affixed to and rotating with the shaft (22), and extends through the wall and the flange (12). The seal also has a spring device (5) arranged outside the wall and providing a force for increasing the contact between the sealing rings (1, 2).Type: GrantFiled: May 8, 2001Date of Patent: February 24, 2004Inventor: Goran Anderberg
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Patent number: 6695319Abstract: An indexing safety gasket (1) designed to be mounted in the lid of a pressure cooker for the purpose of providing sealing at pressure between the lid and the pan of the pressure cooker, the gasket being characterized in that it includes at least one outer notch (25) in its periphery, and means for fastening the gasket (1) relative to the lid so as to index rotation of the gasket (1) to rotation of the lid.Type: GrantFiled: April 20, 2001Date of Patent: February 24, 2004Assignee: SEB S.A.Inventors: Daniel Jean-Marie Anota, Eric Chameroy
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Patent number: 6688603Abstract: A radial shaft sealing ring, comprising a sealing member made of plastics, especially PTFE compound material, and including a sealing lip which has a portion in sealing engagement with the surface of a shaft towards the medium side is characterized in that a contact pressure means is provided at the medium side of the sealing lip for applying a force with a radially inwardly directed component to said portion of the sealing lip, keeping it pressed against the surface of the shaft.Type: GrantFiled: February 20, 2002Date of Patent: February 10, 2004Assignee: Dichtungstechnik G. Bruss GmbH & Co.Inventor: Michael vom Schemm
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Patent number: 6688605Abstract: A bearing seal for a water pump of an automobile has rolling elements between an outer ring fixed to a casing and a rotary shaft that is provided with a drive portion at one end and an impeller at the other end. In addition, a seal is formed between the outer ring and the rotary shaft by an annular seal body fixed to each end of the outer ring. The seal body on at least the impeller end of the rotary shaft is made of hydrogenated nitrile rubber, to achieve a seal body that is inexpensive but does not deform, even when used in a high-temperature environment in contact with cooling water in a long time.Type: GrantFiled: December 22, 1998Date of Patent: February 10, 2004Assignee: NSK Ltd.Inventors: Syuichi Yano, Takeshi Nakamura
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Patent number: 6688608Abstract: The improved ring seal includes an annularly shaped body element having a radial inner surface, a radial outer surface, a first axial end surface and a second axial end surface. The ring seal also includes a plurality of bores which project radially inward from the radial outer surface toward the radial inner surface. The projection of the bores through the ring seal form sidewalls which project between the axial end surfaces and radially from the ring seal's radial outer surface towards the ring seal's radial inner surface. The addition of the bores to the ring seal increases the ring seal's deformation during sealing compression, while the sidewalls provide elastic recovery of the ring seal during repeated cycles of compression and decompression. The ring seal also includes a circular ridge axially projecting from both axial end surfaces. The axial ridges separate the end surfaces into inner axial end surfaces and outer axial end surfaces.Type: GrantFiled: March 11, 2002Date of Patent: February 10, 2004Inventor: Michael Doyle
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Patent number: 6685196Abstract: A joint seal for use in joints that may be exposed to water comprises at least one layer of a compressible impregnated open cell foam. On at least a portion of the surface of the compressible foam there is positioned a hydrophilic material.Type: GrantFiled: August 31, 2000Date of Patent: February 3, 2004Inventor: Konrad Baerveldt
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Patent number: 6685197Abstract: A valve cover gasket has a perforated central core of metal including protrusions extending from planar sides of the core. Silk screened on each side of the core is a silicone foam rubber layer adapted to replace traditional cork gasket structures used for same purpose. The silicone rubber layers include a foaming agent that causes the material to expand during an oven-curing period. The amount of expansion of the silicone rubber coating is up to three times the thickness of the coating originally applied. As disclosed, the oven cure is for approximately 10 minutes at 300 degrees Fahrenheit. The protrusions prevent the silicone rubber material from being fully compressed; the protrusions are designed not to flatten under normal gasket compression loads. The peaks of the protrusions act as compression loads stops to limit amount of permissible compression of the silicone rubber layers.Type: GrantFiled: October 31, 2001Date of Patent: February 3, 2004Assignee: Dana CorporationInventor: Paul V. Rakauskas
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Patent number: 6685191Abstract: An improved mechanical seal for a pump includes a seal cartridge slidably received inside an end plate. The cartridge includes an outer cylindrical stator member which is slidably received in the end plate and an inner cylindrical rotor which is rotatable within the stator member. The stator member is prevented from rotation in the end plate. The stator member includes a shoulder which extends outwardly over the end plate and is captured between the end plate and the housing of the pump. A clinching collar is fixed to the rotor member and retains the rotor member of the cartridge to the pump shaft. The clinching collar may pass through the end plate while attached to the rotor member and pump shaft. Lubricating passageways in the end plate allow lubricants to circulate past the seal cartridge bearing surfaces.Type: GrantFiled: February 8, 2001Date of Patent: February 3, 2004Assignee: A. W. Chesterton CompanyInventor: Keith R. Toal
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Patent number: 6682081Abstract: A reduced area gasket has a sealing ring around the inside perimeter of the gasket. Remaining portions of the gasket are removed or compressed so that the bolt load is focused on the sealing area when the flange is tightened. In this way, the lower bolt loads mandated by plastic piping may be met, and the required sealing may be further obtained.Type: GrantFiled: October 30, 2001Date of Patent: January 27, 2004Assignee: Inertech, Inc.Inventors: Brian Douglas Burton, James E. B. Frew, Alfred F. Waterland, III