Radially Backed By Resilient Or Elastomeric Member Patents (Class 277/589)
  • Patent number: 10309562
    Abstract: A seal assembly includes an outer member defining a bore and an inner member received in the bore of the outer member and one of the outer member and the inner member defining a shoulder portion. An inner circular cross-section metallic ring member and an outer circular cross-section metallic ring member are disposed between the outer member and inner member and against the shoulder portion. A wedge member engages the inner circular cross-section metallic ring member and the outer circular cross-section metallic ring member for applying an axial force against each of the inner and outer circular cross-section metallic ring members in a direction toward the shoulder portion and for applying a radially outer force against the outer circular cross-section metallic ring member and for applying a radially inner force against the inner circular cross-section metallic ring member.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: June 4, 2019
    Assignee: Freudenberg Oil & Gas, LLC
    Inventor: Michael LoGiudice
  • Patent number: 10184564
    Abstract: Spring energized seal assemblies configured for use in static or dynamic application and methods of using and making same are provided. The seal assemblies can each have a sealing component and optionally a backup ring or a locking ring or both. An annular spring can be used with a spring groove of either the backup ring or the locking to facilitate assembling of the mentioned components of a seal assembly onto each other and the entire seal assembly into a seal cavity of a housing.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: January 22, 2019
    Assignee: Bal Seal Engineering, Inc.
    Inventors: Peter J. Balsells, Hamid Rastegar
  • Patent number: 9638330
    Abstract: An ultrahigh-pressure sealing device improves sealing performance under ultrahigh pressures and improves durability. The ultrahigh-pressure sealing device is arranged to seal an annular space between an outer member and an inner member and separates between a high-pressure chamber and a low-pressure chamber. A bottom ring includes a first inner periphery, a first large-diameter outer periphery, a first small-diameter outer periphery, and a first middle outer periphery. A back-up ring includes a second inner periphery, a second engagement portion, and a second outer periphery. A packing ring includes a third low-pressure-chamber end, a third inner periphery, a third large-diameter outer periphery, a third the small-diameter outer periphery, and a third middle outer periphery. An elastic ring includes a fourth inner periphery, a fourth the engagement portion, and a fourth outer periphery.
    Type: Grant
    Filed: June 16, 2016
    Date of Patent: May 2, 2017
    Assignee: SUGINO MACHINE LIMITED
    Inventor: Kouichi Itou
  • Patent number: 9309973
    Abstract: The sealing device includes: an outer peripheral ring 2000 that is in contact with a side wall surface of an annular groove 4100 at a low pressure side (L), and slides with respect to an inner peripheral surface of a shaft hole in a housing 5000 through which a shaft 4000 is inserted. An inner peripheral ring 3000 made of a rubber-like elastic body that is in contact with an inner peripheral surface of the outer peripheral ring 2000 and a groove bottom surface of the annular groove 4100, respectively. The outer peripheral ring 2000 is formed on its outer peripheral surface with a concave portion 2220 which extends from an end of a high pressure side (H) to a position which does not arrive at an end of a low pressure side, so as to introduce fluid thereinto from the high pressure side.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: April 12, 2016
    Assignee: NOK CORPORATION
    Inventors: Kazunari Seki, Koji Watanabe, Wataru Tokunaga, Yuki Takao, Fangman Xu, Hirotaka Mizuta, Keisuke Nakashima, Takuya Igawa, Yusuke Yoshida, Hideya Watanabe, Yosuke Kondo
  • Patent number: 9243639
    Abstract: A scroll compressor includes a housing, a fixed scroll, and a movable scroll. A compression chamber is formed between the movable scroll and the fixed scroll. An opposing wall is located in and fixed to the housing. A back pressure region is formed between the opposing wall and the movable scroll, and a back pressure in the back pressure region urges the movable scroll toward the fixed scroll. An annular sealing member is arranged between the movable scroll and the opposing wall. The movable scroll includes a holding portion that holds the sealing member. The sealing member includes a rubber portion, which elastically deforms in the holding portion, and a resin portion, which is made of a material harder than the rubber portion. The resin portion at least partially projects out of the holding portion toward the opposing wall. The resin portion is in contact with the opposing wall.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: January 26, 2016
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Hiroki Nagano, Tatsushi Mori, Ken Suitou
  • Patent number: 9234591
    Abstract: Sealing assemblies to provide sealing between a shaft and a housing comprising a sealing component comprising a body section as well as an outer flange and an inner flange both extending from said body section; a supporting component receiving said sealing component and comprising a relatively thick inner arm projecting into said sealing component and providing a supporting area spanning an inner portion of said body section and a portion of said inner flange; an anti-extrusion component engaged with said relatively thick inner arm; the minimum clearance between said anti-extrusion component and said shaft being less than the minimum clearance between said relatively thick inner arm and said shaft; said inner flange comprising a sealing area; wherein said sealing assembly is to be received in a cavity in said housing or on said shaft.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: January 12, 2016
    Assignee: Bal Seal Engineering, Inc.
    Inventors: Farshid Dilmaghanian, Peter J. Balsells
  • Patent number: 9157530
    Abstract: The sealing device includes: an outer peripheral ring 2000 that is in contact with a side wall surface of an annular groove 4100 at a low pressure side (L), and slides with respect to an inner peripheral surface of a shaft hole in a housing 5000 through which a shaft 4000 is inserted. An inner peripheral ring 3000 made of a rubber-like elastic body that is in contact with an inner peripheral surface of the outer peripheral ring 2000 and a groove bottom surface of the annular groove 4100, respectively. The outer peripheral ring 2000 is formed on its outer peripheral surface with a concave portion 2220 which extends from an end of a high pressure side (H) to a position which does not arrive at an end of a low pressure side, so as to introduce fluid thereinto from the high pressure side.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: October 13, 2015
    Assignee: NOK CORPORATION
    Inventors: Kazunari Seki, Koji Watanabe, Wataru Tokunaga, Yuki Takao, Fangman Xu, Hirotaka Mizuta, Keisuke Nakashima, Takuya Igawa, Yusuke Yoshida, Hideya Watanabe, Yosuke Kondo
  • Patent number: 9080672
    Abstract: In a sealing device installed to an installation groove which is provided in an outer peripheral surface of one member among two members relatively moving, and sealing between the two members by coming into close contact with the other member which is positioned in an outer peripheral side of the installation groove and one side wall of the installation groove, the sealing device has a seal ring, a support ring having a pressing surface which comes into contact with an inner peripheral corner portion the seal ring, and a spring means which presses the support ring and the seal ring. A collapsing margin in relation to the taper surface shaped pressing surface in the support ring is normally set in an inner peripheral corner portion in the seal ring. According to the sealing device, it is possible to improve pressure resistance and sealing performance.
    Type: Grant
    Filed: September 25, 2013
    Date of Patent: July 14, 2015
    Assignee: NOK Corporation
    Inventors: Daisuke Matsumoto, Hiroaki Monma
  • Publication number: 20150115544
    Abstract: A seal assembly includes an annular static sealing member disposed within an annular channel in a housing or shaft. An annular dynamic sealing member is disposed coaxially within or about the static member and has a circumferential sealing surface engageable with the shaft or housing. An annular biasing member is disposed radially between the static and dynamic sealing members and is configured to bias the dynamic sealing member radially to maintain engagement of the sealing surface and the shaft or housing. The static member is configured to prevent relative angular displacement between the static and biasing members and the dynamic member is configured to prevent relative angular displacement between the dynamic and biasing members. As such, the dynamic sealing member, the biasing member and the static sealing member angularly displace within the channel as a single unit when torque above a particular magnitude is applied to the dynamic sealing member.
    Type: Application
    Filed: October 28, 2013
    Publication date: April 30, 2015
    Applicant: AKTIEBOLAGET SKF
    Inventors: Raymond Lee Chaplin, Tiberio J. Gonzalez, Tyler James Ryther
  • Patent number: 8985591
    Abstract: Provided is a sealing apparatus which can reduce the torque of a rotary portion while always exhibiting a stable and high sealing performance even when a high fluid pressure is being applied. A seal ring (4) inclines when subjected to a hydraulic pressure (P) and a pressing force by a D-ring (3), and stabilizes in a state where an entire opposite pressure-side taper surface (4c) is in contact with an opposite pressure-side side surface (5b) of an annular groove for sealing (5). With the hydraulic pressure (P) being applied to a portion (4b1) of the inner peripheral surface (4b) of the seal ring (4) where an operating oil comes into contact, a space between the portion (4b1) and a shaft (2) is enlarged, and an area of contact between the seal ring (4) and the shaft (2) is reduced. Thus, the torque can be reduced.
    Type: Grant
    Filed: January 18, 2011
    Date of Patent: March 24, 2015
    Assignee: NOK Corporation
    Inventor: Naohiro Jotaki
  • Patent number: 8985590
    Abstract: A seal assembly can be incorporated into a track pin cartridge assembly of an undercarriage of a track-type machine. The seal assembly can include a pin defining a longitudinal axis and first and second members both coaxial with the pin about the longitudinal axis. The first member is pivotable about the longitudinal axis with respect to the second member and includes a load ring engagement surface defining a seal cavity disposed in proximal relationship to the second member. A seal assembly, including a seal ring and a load ring, is disposed in the seal cavity and sealingly engages the first and second members. A radial segment of a first member engagement surface of the load ring is radially offset, measured along a radial axis perpendicular to the longitudinal axis, from a radial segment of a seal ring engagement surface of the load ring.
    Type: Grant
    Filed: April 19, 2012
    Date of Patent: March 24, 2015
    Assignee: Caterpillar
    Inventors: Guanghui Liang, Mark Diekevers, Mark Kiesel, Eric Johannsen, Jason Sebright
  • Publication number: 20150048574
    Abstract: The sealing device includes: an outer peripheral ring 2000 that is in contact with a side wall surface of an annular groove 4100 at a low pressure side (L), and slides with respect to an inner peripheral surface of a shaft hole in a housing 5000 through which a shaft 4000 is inserted. An inner peripheral ring 3000 made of a rubber-like elastic body that is in contact with an inner peripheral surface of the outer peripheral ring 2000 and a groove bottom surface of the annular groove 4100, respectively. The outer peripheral ring 2000 is formed on its outer peripheral surface with a concave portion 2220 which extends from an end of a high pressure side (H) to a position which does not arrive at an end of a low pressure side, so as to introduce fluid thereinto from the high pressure side.
    Type: Application
    Filed: March 11, 2013
    Publication date: February 19, 2015
    Applicant: NOK CORPORATION
    Inventors: Kazunari Seki, Koji Watanabe, Wataru Tokunaga, Yuki Takao, Fangman Xu, Hirotaka Mizuta, Keisuke Nakashima, Takuya Igawa, Yusuke Yoshida, Hideya Watanabe, Yosuke Kondo
  • Publication number: 20150008648
    Abstract: In a sealing device installed to an installation groove which is provided in an outer peripheral surface of one member among two members relatively moving, and sealing between the two members by coming into close contact with the other member which is positioned in an outer peripheral side of the installation groove and one side wall of the installation groove, the sealing device has a seal ring, a support ring having a pressing surface which comes into contact with an inner peripheral corner portion the seal ring, and a spring means which presses the support ring and the seal ring. A collapsing margin in relation to the taper surface shaped pressing surface in the support ring is normally set in an inner peripheral corner portion in the seal ring. According to the sealing device, it is possible to improve pressure resistance and sealing performance.
    Type: Application
    Filed: September 25, 2013
    Publication date: January 8, 2015
    Applicant: NOK CORPORATION
    Inventors: Daisuke Matsumoto, Hiroaki Monma
  • Patent number: 8763640
    Abstract: A movable valve element is provided so as to rotate about a predetermined shaft center. A first valve seat and a second valve seat are respectively arranged apart from the movable valve element with predetermined clearances on both sides of the movable valve element in a direction along the shaft center. A first sealing member is arranged around a communication path so as to seal a space inside the communication path from a space defined by the clearance on a side close to the first valve seat. A second sealing member is arranged around the communication path so as to seal the space inside the communication path from a space defined by the clearance on a side close to the second valve seat.
    Type: Grant
    Filed: July 15, 2010
    Date of Patent: July 1, 2014
    Assignee: Daikin Industries, Ltd.
    Inventors: Makoto Kojima, Noriyuki Okuda, Takayuki Setoguchi
  • Publication number: 20140117628
    Abstract: A sealing member for sealing a disk type parking brake may include a cap member having a hole in the center and pressed in a rear end portion of the caliper at which the shaft may be mounted, and an elastic member which may be mounted between the cap member and the rear end portion of the caliper and extended to the outside of the caliper for sealing the shaft and the brake lever, wherein the elastic member includes a slope portion which may be positioned between the cap member and the rear end portion of the caliper and may be slantly protruding out in radial direction, and one end portion of the cap member may be contacted with the outer surface of the slope portion by being bended out in radial direction.
    Type: Application
    Filed: December 4, 2012
    Publication date: May 1, 2014
    Applicants: Kia Motors Corporation, Hyundai Motor Company
    Inventor: Jae Ho Jang
  • Patent number: 8702106
    Abstract: A seal assembly disposed within a radial seal groove to sealingly engage a bonnet within a bore. The seal assembly includes a radial seal surface, an axial seal surface, a vent surface, and an axial preload surface. The seal assembly is thrust towards a longitudinal wall and away from a radial wall of the radial seal groove when pressure in a high-pressure zone increases.
    Type: Grant
    Filed: July 20, 2006
    Date of Patent: April 22, 2014
    Assignee: Hydril USA Manufacturing LLC
    Inventor: Michael Wayne Berckenhoff
  • Patent number: 8690534
    Abstract: Arrangements for promoting the restriction of fluid flow along a shaft via providing a deformable ring member in an annulus between the shaft and housing. In an initial general condition, the deformable ring member permits free fluid flow in a general direction along the shaft while in a second, constricted condition, the deformable ring closes or blocks a gap or clearance normally conducive to free fluid flow to thereby restrict fluid flow. An actuation medium, which can take any of a very wide variety of forms, preferably promotes constriction of the deformable ring member directly or indirectly.
    Type: Grant
    Filed: June 8, 2009
    Date of Patent: April 8, 2014
    Assignee: Curtiss-Wright Electro-Mechanical Corporation
    Inventors: David Jeffrey Janocko, Charles David Bice
  • Patent number: 8678798
    Abstract: A rotary pump device is provided in which a drive shaft is inserted into a center hole of a cylinder that forms rotor chambers, and into outer rotors and inner rotors of rotary pumps. In the rotary pump device, seal mechanisms that include hollow-shaped resin members and annular rubber members are arranged on an opposite side to the cylinder with respect to the rotary pumps. Metal rings are arranged in hollow portions of the resin members in the seal mechanisms so that the drive shaft is inserted into an inner periphery of the metal rings with a minimum clearance.
    Type: Grant
    Filed: August 29, 2011
    Date of Patent: March 25, 2014
    Assignees: Advics Co., Ltd., Denso Corporation
    Inventors: Yuki Nakamura, Kunihito Ando, Nobuhiko Yoshioka, Takahiro Naganuma, Tomoaki Kawabata
  • Patent number: 8672418
    Abstract: A sealing structure is provided wherein an annular groove formed in a pump cylinder of a piston pump receives therein a seal ring made of a synthetic resin material and having an inner circumferential surface fluid-tightly contacting an outer circumferential surface of the pump piston and an O-ring arranged on the outer circumferential side of the seal ring and urging the seal ring radially inward. The seal ring is formed at its axial end portions with flange portions for preventing the O-ring from coming off. In the state that the seal ring and the O-ring are fitted in the annular groove, the flange portions do not receive a load from the O-ring, and a surface pressure which the seal ring applies to the outer circumferential surface of the piston at an axial center portion thereof is set to be higher than surface pressures which it applies to the outer circumferential surface of the piston at axial end portions thereof.
    Type: Grant
    Filed: November 12, 2010
    Date of Patent: March 18, 2014
    Assignee: Advics Co., Ltd
    Inventors: Tomoo Harada, Tsunekazu Nishida
  • Patent number: 8573112
    Abstract: To cope with severe use conditions, a high-pressure fuel pump has a seal system (21) for separating/sealing fuel and lubricating oil, in an annular space between an axle reciprocating within the pump and a housing having the axle passing therethrough, wherein the seal system (21) consists of a combination of a fuel-side seal (31) for sealing fuel and lubricating-oil-side seal (41) for sealing lubricating oil, the fuel-side seal (31) is composed of a plastic-made seal ring (32) and a rubbery-elastomer-made O ring (33) for backup of the seal ring (32), the lubricating-oil-side seal (41) consists of a single body of single-lip-type oil seal (42) having a rubbery-elastomer-made seal lip (44) fitted to a metal ring (43) and arranged toward the lubricating oil side, and a distance between the fuel-side seal (31) and the lubricating-oil-side seal (41) is set to be larger than the reciprocating distance of the axle.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: November 5, 2013
    Assignees: NOK Corporation, Denso Corporation
    Inventors: Junichi Nakayama, Nobuyuki Eguchi, Tamio Inamura, Kokichi Hamamoto, Hiroshi Inoue
  • Publication number: 20130234544
    Abstract: One possible embodiment of the invention could be an oil seal for a DELCO REMY 50DN heavy duty automotive alternator comprising a top collar; a bottom collar nested within the top collar to form a ring body; an annular polymer sealing member attaches to the top collar to form a mating flange that generally extends from an inner edge of the top collar to further denote a portion of an inner passage of the oil seal, the mating flange forming clockwise orientated splines to substantially denote a set return grooves in a spaced-apart, parallel, and clockwise orientation; wherein during alternator operations, a spacing collar spinning within the inner passage brings oil from the interior of the alternator into contact with the mating flange, the splines on the mating flange then direct the oil to the return grooves, which then direct the oil back towards the interior of the alternator.
    Type: Application
    Filed: March 7, 2013
    Publication date: September 12, 2013
    Applicant: NC Auto Parts, LLC.
    Inventor: Casey Sean Haskin
  • Patent number: 8459655
    Abstract: A sealing device (1) having: a slide ring (2) and a back ring (3). The sealing device (1) is configured to seal an annular gap between a housing having a shaft hole, and a shaft inserted through the shaft hole. The slide ring (2) has: a through-cut (22), comprising a circumferential cut (22A), and axial cuts (22B) extending from both ends of the circumferential cut, along the axial direction; and multiple parting lines (23A, 23B) formed on a surface of the slide ring (2). The parting lines (23A, 23B) are arranged so that the parting lines (23A, 23B) are not overlapped with the circumferential cut (22A) exposed at the junction surface of the slide ring (2) with the back ring (3), throughout the lengthwise direction of the circumferential cut.
    Type: Grant
    Filed: September 22, 2010
    Date of Patent: June 11, 2013
    Assignee: NOK Corporation
    Inventors: Toshiyuki Maeda, Yoshiyuki Abe
  • Patent number: 8413994
    Abstract: In a sealing system (1) between two mutually moving components (2, 3) for sealing a high pressure side (H) with respect to a low pressure side (N), a sealing configuration (9) is provided in a first annular groove (4) at the high pressure side and with one or more pressure relief elements (10a, 10b) being disposed in second annular grooves (14a, 14b) each pressure relief element (10a, 10b) having a second sealing ring (15a, 15b) with a flat pressure gradient. The hydrodynamic leak rate for each pressure relief element (10a, 10b) is chosen in such a fashion that a certain hydraulic pressure obtains in each intermediate region (Za, Zb).
    Type: Grant
    Filed: February 20, 2007
    Date of Patent: April 9, 2013
    Assignee: Trelleborg Sealing Solutions Germany GmbH
    Inventor: Holger Jordan
  • Publication number: 20130026714
    Abstract: A sealing device in which a good lubricating oil film is formed along the entire circumference of a sliding surface. The sealing device (1) is fitted in an annular groove formed in either of two elements that are a housing having a shaft hole and a shaft inserted through the shaft hole, and the sealing device (1) seals an annular gap between the two elements. The sealing device (1) has a seal ring (2) sliding against the other element by relative axial movements of the two elements. In the seal ring (2), on each of axially opposite ends of a sliding surface (20) sliding against the other element, there are formed grooves (22) extending from an end surface (21) of the seal ring (2) toward the axial center of a sliding surface (20).
    Type: Application
    Filed: October 8, 2012
    Publication date: January 31, 2013
    Applicant: NOK CORPORATION
    Inventor: NOK CORPORATION
  • Patent number: 8342304
    Abstract: The invention concerns a pneumatic retarding device with a cylinder dividing the cylinder into a displacement chamber and a compensation chamber and including a piston with a piston rod movably supported in the cylinder and having a piston seal element wherein, upon movement of the piston, a piston movement opposing force is generated while an air leakage flow is established past the piston for damping piston movement. The piston and the piston rod are formed integrally and the piston seal element has at least two deformation zones of which one responds faster to a pressure change in the displacement chamber then the other which is subjected to the pressure change via a restrictive passage. Also, a guide system is provided with such a retarding device.
    Type: Grant
    Filed: March 26, 2009
    Date of Patent: January 1, 2013
    Inventors: Günther Zimmer, Martin Zimmer
  • Patent number: 8312805
    Abstract: A high pressure piston for use within a liner sleeve of a reciprocating pump comprises a dual-durometer elastomeric seal having first and second coaxial seal sections and, in certain embodiments, a circumferential bearing ring. Interactions of the seal components, including seal elastomers, result in stress redistribution within the seal which maintains sealing preload, with corresponding improved extrusion resistance and seal durability. When a bearing ring is present, a pump's pressure stroke causes at least a portion of the bearing ring to elastically expand radially to narrow or close the extrusion gap, thus tending to block elastomer extrusion by establishing sliding contact between the bearing ring's external surface and the liner. On the pump's return stroke the slightly wider extrusion gap allows cooling water directed generally toward the proximal flange of the piston hub to better cleanse, as well as cool, the liner wall.
    Type: Grant
    Filed: February 23, 2009
    Date of Patent: November 20, 2012
    Assignee: Novatech Holdings Corp.
    Inventor: George H. Blume
  • Publication number: 20120269538
    Abstract: A developing device includes a developer carrier, a developing unit housing which rotatably supports the developer carrier, a side seal member which comes into slidable contact with both ends of the developer carrier, a sheet-like elongated seal member which extends in the axial direction of the developer carrier so as to come into slidable contact with the developer carrier, a side seal attachment surface which is formed in the developing unit housing and to which the side seal member is attached, and a support portion which is formed in the developing unit housing and protrudes toward the developer carrier from the side seal attachment surface to support the elongated seal member. The elongated seal member is attached onto the support portion in a state where both ends thereof overlap the side seal member and are opposite the side seal attachment surface.
    Type: Application
    Filed: June 29, 2012
    Publication date: October 25, 2012
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Yuichi Matsushita, Fan XU, Mitsuru HORINOE, Takashi YASUDA
  • Publication number: 20120146293
    Abstract: The invention relates to a seal (160) for sealing two opposite contact surfaces along a closed contour, comprising an elastic sealing element (210), which has two opposite sealing surfaces (240) to bear against the contact surfaces in the region of the contour, two spring elements (220, 230), each of which is associated with one of the sealing surfaces, and a supporting element (250) arranged between the spring elements, wherein each spring element comprises two limbs (260, 270), one limb pressing the sealing surface associated with the spring element against one of the contact surfaces and the other limb being supported on the supporting element.
    Type: Application
    Filed: July 5, 2010
    Publication date: June 14, 2012
    Applicant: ROBERT BOSCH GMBH
    Inventors: Georg Reeb, Claudius Muschelknautz
  • Publication number: 20120091667
    Abstract: In a seal assembly (1) for sealing a high-pressure side (H) in relation to a low-pressure side (N) with at least one relief bore or relief channel (6) for pressure relief, a sealing ring (2) and at least one pre-stressing element (3) are arranged in a groove space (5) between two machine parts (4a, 4b) that can be displaced towards one another in a translatory manner, in such a way that the pre-stressing element (3) tensions the sealing ring (2) with both a radial force component (210) and an axial force component (220), and the sealing ring (2) lies against the second machine part (4b) and the groove flank (51) on the low-pressure side by means of defined contact surfaces (20, 22).
    Type: Application
    Filed: December 23, 2011
    Publication date: April 19, 2012
    Inventor: Holger Jordan
  • Patent number: 8141881
    Abstract: A seal is disclosed, for sealing a seal surface (5) between two machine parts (6, 7) which move relative to each other, wherein a seal body of the seal (1) comprises a retainer piece (10), arranged towards the groove base in a groove (8) in one of the machine parts (7), a sealing part (11), arranged in the groove (8) facing the sealing surface and a resilient connector part (12) between the sealing part (11) and the retaining part (10). The seal (1) has a recess (21) between the retainer part (10) and the connector part (12) and a further recess (20) between the connector part (12) and the sealing part (11). The seal (1) has spacer elements (25), said spacer elements (25) extending into at least one of the recesses (20, 21), preferably at least into the recesses (20) between the sealing part (11) and the connector part (12).
    Type: Grant
    Filed: June 15, 2007
    Date of Patent: March 27, 2012
    Assignee: Trelleborg Sealing Solutions Germany GmbH
    Inventor: Matthias Keck
  • Patent number: 8075000
    Abstract: A composite, dynamic seal suitable for use in a high temperature environment and method of making same. The dynamic seal includes a resilient, generally ring-shaped seal body having a first layer formed of a first resilient sealing material and a second layer formed of a second resilient sealing material. The first and second layers are preferably molded and cured together simultaneously and chemically cross-linked to each other. The first resilient sealing material is selected for its wear resistant dynamic properties and the second resilient sealing material is selected for its compression set resistant properties. Preferably, the first resilient sealing material is tetrafluoroethylene and propylene copolymer and the second resilient sealing material is fluorocarbon rubber. The first and second resilient sealing materials have compatible cure systems, preferably peroxide cure systems.
    Type: Grant
    Filed: February 23, 2006
    Date of Patent: December 13, 2011
    Assignee: Kalsi Engineering, Inc.
    Inventors: Brian A. James, John E. Schroeder, Rome Richardson, Lannie L. Dietle
  • Publication number: 20110187054
    Abstract: A dynamic shaft seal assembly for sealing a rotating or reciprocating shaft includes an elastic seal member having at least a portion thereof in sealing communication with the rotating or reciprocating shaft. A shape memory alloy element is in contact with the elastic seal member, the shape memory alloy element being discontinuously disposed about the elastic seal member, and being configured to i) directly apply a compressive force in a radial direction on the seal member against the rotating or reciprocating shaft, and ii) maintain the compressive force on the seal member as a function of temperature. The seal assembly is adapted to seal at a temperature ranging from about ?55° C. to about 250° C. Methods including the seal assembly are also disclosed.
    Type: Application
    Filed: April 11, 2011
    Publication date: August 4, 2011
    Inventors: Chandra S. Namuduri, Alan L. Browne, Nancy L. Johnson
  • Publication number: 20110156361
    Abstract: A seal includes a polymeric jacket defining a seal surface and an inner cavity extending within the polymeric jacket along a length of the polymeric jacket. The seal further includes a spring extending within the inner cavity and including a plurality of laser cut spring elements. The seal can be disposed between a static component and a rotatable component.
    Type: Application
    Filed: December 29, 2010
    Publication date: June 30, 2011
    Applicant: SAINT-GOBAIN PERFORMANCE PLASTICS CORPORATION
    Inventors: Hamid Reza Ghalambor, Karthik Vaideeswaran
  • Publication number: 20110140369
    Abstract: A seal assembly is disclosed. The seal comprises a metal spring bonded to an elastomer body that is coupled to a polymer ring. The spring may comprise a cantilevered, overlapped metal strip. The elastomer and polymer mechanically interlock with radial members. The elastomer has contacting surfaces configured in outward extending radii to enhance forward edge loading and oil removal from the dynamic surface. In hydraulic service, the seal prevents the egress of hydraulic fluid and ingress of foreign particles.
    Type: Application
    Filed: December 10, 2010
    Publication date: June 16, 2011
    Applicant: SAINT-GOBAIN PERFORMANCE PLASTICS CORPORATION
    Inventor: Jon M. Lenhert
  • Patent number: 7931450
    Abstract: In a variable displacement pump, an outer peripheral surface approximately in an opposite side to a portion supported to an oscillation supporting point in a cam ring with respect to a pump shaft is formed as a convex surface portion holding a seal member brought into slidable contact with an inner peripheral surface of an outer case, and an inner peripheral surface of the outer case with which the seal member held to the convex surface portion of the cam ring is brought into slidable contact is formed as a circular arc surface around the oscillation supporting point.
    Type: Grant
    Filed: June 12, 2007
    Date of Patent: April 26, 2011
    Assignee: Showa Corporation
    Inventors: Takeshi Ueki, Shingo Ishige
  • Patent number: 7819184
    Abstract: A logging plug is disclosed having an internal sealing mechanism therein which provides a high degree of sealing integrity between the bore of the plug and a coiled tubing or other means of suspending wellbore equipment running therethrough. The sealing mechanism utilizes a combination of low friction, elastomerically-energized cap seals and ring seals to ensure that the sealing surfaces adapt continuously to the changing profile of the coiled tubing to provide a true dynamic seal around the coiled tubing.
    Type: Grant
    Filed: June 21, 2005
    Date of Patent: October 26, 2010
    Assignee: Schlumberger Technology Corporation
    Inventors: Sandeep Sachdeva, Marc McCorry, Andrew S. Ferguson
  • Patent number: 7793941
    Abstract: A device for sealing between a first component and a second component is disclosed. The first component has a groove and the groove has a first wall and a second wall. The annular body includes a first side configured to selectively contact the first wall of the groove, a second side opposite the first side configured to selectively contact the second wall of the groove, a first surface in contact with the second component, and a second surface opposite the first surface. A lip is bonded to the second surface and extends at least partially around the second surface of the annular body. A pressure acting on the first side of the annular body forces the second side to contact the second wall of the groove, and a pressure acting on the second side of the annular body forces the first side to contact the first wall of the groove.
    Type: Grant
    Filed: January 23, 2007
    Date of Patent: September 14, 2010
    Assignee: GM Global Technology Operations, Inc.
    Inventors: James A. Springer, Patrick M. Gibson
  • Patent number: 7793944
    Abstract: In a sealing device (1) installed in an installation groove (4) provided in one member (2) of two members (2, 3) facing to each other so as to be brought into close contact with the other (3), the sealing device has a seal ring (11) and a backup ring (21) arranged in a low-pressure side (L) of the seal ring (11), the installation groove (4) has a slope bottom surface (4c), the backup ring (21) has a slope surface (21a). The sealing device (1) is to be made such that the seal ring (11) made of a rubber-like elastic body is prevented from being damaged by the backup ring (21) made of a hard material. In order to achieve this object, a second backup ring (31) is arranged between the seal ring (11) and the backup ring (21), and formed by a softer material than the backup ring (21).
    Type: Grant
    Filed: December 7, 2005
    Date of Patent: September 14, 2010
    Assignee: Nok Corporation
    Inventor: Masaya Otuka
  • Publication number: 20100096810
    Abstract: A sealing system includes two fittings, a compliant member, and a spring. The first fitting has two ends, a first cavity, and a first channel. The first channel extends from the first end to the first cavity, which is formed in the second end radially inwardly from an outer surface of the first fitting. The second fitting is disposed in the first cavity and has two ends, a second cavity, and a second channel. The first end is disposed in the first cavity, the second cavity is formed in the first end of the second fitting, and the second channel extends from the second cavity to the second end. The compliant member is disposed in the second cavity. The spring is disposed in the second cavity against the compliant member.
    Type: Application
    Filed: October 20, 2008
    Publication date: April 22, 2010
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Brian G. Baughman, Joshua Robinson
  • Publication number: 20100038575
    Abstract: A valve system includes a source of pressurized fluid comprising an orifice through which the pressurized fluid flows away from the source, and a poppet comprising a groove and a seal positioned in the groove, wherein the seal plugs the orifice when the poppet is in a closed position, and wherein the poppet and the seal move through the orifice against a flow of the pressurized fluid to allow the pressurized fluid to flow through the orifice and away from the source. The seal may include an O-ring.
    Type: Application
    Filed: April 29, 2008
    Publication date: February 18, 2010
    Inventor: Joseph R. McKee
  • Patent number: 7604243
    Abstract: According to one embodiment, a composite seal may include a first, substantially annular seal element having an upper body portion, a neck portion, and an axial protrusion. The upper body portion includes opposing inclined surfaces extending toward the neck portion defining a first angle. The axial protrusion includes opposing inclined surfaces extending toward an axial end of the axial protrusion defining a second angle, wherein the first angle and the second angle are substantially similar. The composite seal may further include a second, substantially annular seal element having a mouth portion, a neck portion and a recess portion, wherein the axial protrusion is configured to be complementarily engaged with the recess portion in an interlocking manner.
    Type: Grant
    Filed: March 14, 2006
    Date of Patent: October 20, 2009
    Assignee: Macrotech Polyseal, Inc.
    Inventors: Daniel K. Zitting, Tadd M. McBride, A. Todd Hagen
  • Publication number: 20090252628
    Abstract: There are a number of applications today where the pumping of abrasive slurries is necessary. The pumping mechanisms, though, can be complex, employing multiple transfer cylinders and movable pipes. These designs have their problems, specifically wear between poorly sealing surfaces. To reduce this problem, seals are provided that have multiple wear surfaces which include harder tiles secured over a softer core to benefit from the relative hardness or flexibility of each of the respective materials.
    Type: Application
    Filed: April 7, 2009
    Publication date: October 8, 2009
    Applicant: Good Earth Tools, Inc.
    Inventor: Alan Kirkland
  • Publication number: 20090127798
    Abstract: The present invention discloses a sealing apparatus having a circulating channel for a wire cutting machine, and the sealing apparatus includes a channel at the position of a lower arm in the fluid tank for injecting a liquid, a sealing O-ring installed at the sealing apparatus for preventing a leak of liquid, such that a circulating channel is formed around the periphery of the lower arm. The liquid is injected through an injecting inlet into the circulating channel such that the centrifugal force produced by the whirling flow can wash away the debrises attached on the lower arm, and discharge the debrises from a discharge opening to the outside.
    Type: Application
    Filed: November 20, 2007
    Publication date: May 21, 2009
    Inventor: Chen-Fu Tsai
  • Publication number: 20090108542
    Abstract: In a seal assembly (1) for sealing a high-pressure side (H) in relation to a low-pressure side (N) with at least one relief bore or relief channel (6) for pressure relief, a sealing ring (2) and at least one pre-stressing element (3) are arranged in a groove space (5) between two machine parts (4a, 4b) that can be displaced towards one another in a translatory manner, in such a way that the pre-stressing element (3) tensions the sealing ring (2) with both a radial force component (210) and an axial force component (220), and the sealing ring (2) lies against the second machine part (4b) and the groove flank (51) on the low-pressure side by means of defined contact surfaces (20, 22).
    Type: Application
    Filed: April 21, 2007
    Publication date: April 30, 2009
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD
    Inventor: Holger Jordan
  • Patent number: 7491044
    Abstract: A sealing device includes a stationary member, an orbiting member, a tip end surface of which slides on an inner face of the stationary member, and a sealing member to be fitted into a sealing groove engraved on the tip end surface. A sliding contact surface of the sealing member is pressed onto an inner surface of the stationary member with a predetermined force to slide on the inner surface in order that fluid sealing is secured between the sliding contact surface of the sealing member and the inner surface of the stationary member. The sealing member is divided into two parts of an upper ring and a lower ring, with the upper ring contacting the sliding contact surface and the lower ring facing a bottom surface of the sealing groove.
    Type: Grant
    Filed: September 26, 2007
    Date of Patent: February 17, 2009
    Assignee: Anest Iwata Corporation
    Inventor: Tamotsu Fujioka
  • Patent number: 7478815
    Abstract: A high-pressure sealing arrangement is provided for sealing a gap (26) between two concentric machine parts (4, 5) which can be moved relative to each other, of which a first machine part (4) comprises a groove (3) and a second machine part (5) comprises an outer peripheral surface (7) opposite the groove (3). A sealing ring (1) of an extrusion-resistant material and a tensioning ring (2) of an elastomeric material are provided in the groove (3). A shaped section of the sealing ring (1) on the low-pressure side can be deflected towards the outer peripheral surface (7) under fluid pressure load. When the pressure decreases, the pressure-dependent deflection of the sealing ring (1) automatically returns towards the initial, unpressurized state of the sealing ring (1).
    Type: Grant
    Filed: September 13, 2002
    Date of Patent: January 20, 2009
    Assignee: Trelleborg Sealing Solutions Germany GmbH
    Inventor: Holger Jordan
  • Publication number: 20080315144
    Abstract: A ball valve having improved sealing between the valve member and the valve body is presented. Improved sealing is realized by providing a sealing member that is allowed to float on the outer surface of the valve member in the closed position. By being able to float on the outer surface, the sealing member can compensate for any variations in the valve member as a result of machining tolerances or variations in position of the valve member due to changes in pressure within the valve, thereby providing dynamic sealing The dynamic sealing is also provided by configuring the valve member such that it causes the sealing member to be exposed to a higher biasing force in the closed position than in the open position.
    Type: Application
    Filed: June 21, 2007
    Publication date: December 25, 2008
    Applicant: TAC, LLC
    Inventor: Kurt R. Thomas
  • Patent number: 7461708
    Abstract: A drill bit and seal assembly therefor include a seal gland, an elastomeric sealing seal disposed in the seal gland and having a dynamic sealing surface and a static sealing surface, and at least one auxiliary elastomeric annular seal member disposed between the static sealing surface of the sealing seal and the seal gland. The auxiliary annular seal member serves to prevent relative movement of the sealing seal relative to the surfaces of the seal gland and to permit sealing seals of various cross-sections and shapes to adapt to and function with a conventionally sized and shaped gland. The auxiliary annular seal member is sized and configured and its material properties selected so as to impart the appropriate squeeze to the sealing seal to provide the desired contact pressure and footprint. Choice of the appropriate auxiliary seal member may permit the same sized seal to be employed in seal glands of differing sizes.
    Type: Grant
    Filed: August 16, 2004
    Date of Patent: December 9, 2008
    Assignee: Smith International, Inc.
    Inventors: Zhou Yong, Sudarsanam Chellappa
  • Publication number: 20080272557
    Abstract: A seal assembly including a first rigid shield having an annular sealing member of elastomeric material, and a second rigid shield mounted facing the first and having respective sliding surfaces for a first and second annular sealing lip of the annular sealing member, which extend towards the second rigid shield to exert axial sealing pressure and radial sealing pressure, respectively; wherein the first annular sealing lip has a radial seat facing the opposite way to the second annular sealing lip and housing a toroidal spring, which exerts a radial thrust on the first annular sealing lip eccentrically with respect to an elastic hinge defined by a root portion common to the first and second annular sealing lip, and having a centre of rotation located along a line extending through a V-shaped sealing edge of the first annular sealing lip and forming a 20° to 60° angle with a radial plane; the root portion being defined between two opposite annular recesses of the annular sealing member, which have a U-shaped r
    Type: Application
    Filed: March 20, 2008
    Publication date: November 6, 2008
    Applicant: AKTIEBOLAGET SKF
    Inventor: Claudio Foti
  • Patent number: RE42654
    Abstract: A seal for acceptance in an annular gland in a piston comprises an annular primary sealing element, an annular secondary sealing element disposed radially inwardly of the primary sealing element, and a pair of axially spaced back up rings disposed in axially spaced relation on opposite sides of the primary sealing element and having radially inner portions, respectively, engaged with the primary sealing element so as to lock the backup rings in the gland of the piston.
    Type: Grant
    Filed: April 10, 2003
    Date of Patent: August 30, 2011
    Assignee: SKF USA Inc.
    Inventor: Richard D. Zitting