Extrusion Preventing (i.e., Antiextrusion) Structure Patents (Class 277/584)
  • Patent number: 10400899
    Abstract: Fluid flow control apparatus for use with fluid valves are disclosed. An apparatus includes a plug for a sliding stem fluid valve. The plug has a first portion slidably coupled to a second portion. The apparatus also includes a cavity formed in an outer circumferential surface of the plug by the first portion and the second portion. A dimension of the cavity changes when the first portion slides relative to the second portion to displace a seal disposed in the cavity. The seal sealingly engages a cage of the fluid valve when the second portion contacts a seat of the fluid valve.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: September 3, 2019
    Assignee: FISHER CONTROLS INTERNATIONAL, LLC
    Inventor: Trenton Frank Jackson
  • Patent number: 10393296
    Abstract: A pipe sealing gasket is shown which is designed to be received within a raceway provided within a socket end of a female bell plastic pipe end which is assembled with a mating male spigot pipe end to form a plastic pipe joint. The raceway in the female bell plastic pipe end is preformed during manufacture and the gasket is installed thereafter. The gasket has a rubber body portion which is reinforced by a hard corrugated ring-shaped insert. The hard corrugated ring-shaped insert acts to prevent extrusion of the gasket during a variety of pressure conditions as well as preventing displacement during field assembly.
    Type: Grant
    Filed: July 27, 2017
    Date of Patent: August 27, 2019
    Assignee: S & B Technical Products, Inc.
    Inventor: Guido Quesada
  • Patent number: 10370927
    Abstract: A seal for a blind shear ram is configured to extend between a first carrier and a second carrier of the blind shear ram. The seal includes an outer layer configured to contact at least one of the first carrier and the second carrier to seal a wellbore when the blind shear ram is in a closed position. The outer layer has a first stiffness. The seal also includes an inner layer spaced from the outer layer. The inner layer has a second stiffness. The seal further includes an anti-extrusion structure extending between the inner layer and the outer layer. The anti-extrusion structure has a third stiffness greater than the first stiffness and the second stiffness. The outer layer covers the anti-extrusion structure.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: August 6, 2019
    Assignee: General Electric Company
    Inventors: Bodhayan Dev, Deepak Trivedi, Jamie Clay Gamble, Christopher Edward Wolfe, Gregory Ronald Gillette
  • Patent number: 10359135
    Abstract: The present invention concerns a gasket for quick couplers, in particular for the fluid tightness of the first valve of a male coupler. It is characterised in that it must be a composite gasket, having a toroidal shape and circumferentially comprising an O-Ring at its outer surface. The gasket according to the present invention allows a number of advantages to be achieved in terms of the stability and greater reliability of the gasket, which is not subject to extrusion and crushing phenomena during the coupling and decoupling steps of the pressurised coupler.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: July 23, 2019
    Assignee: Faster S.P.A.
    Inventors: Massimo Cardi, Mauro Rambaldini, Giampiero Boffelli, Igor Polgati, Paolo Rusconi
  • Patent number: 10344865
    Abstract: A sealing device has a seal ring, a first backup ring and a second backup ring. The first backup ring is formed into a triangular cross section while having an axially vertical end surface portion, a cylindrical peripheral surface portion, and an inclined surface portion intersecting the end surface portion and the peripheral surface portion. The second backup ring is formed into a triangular cross section while having an axially vertical end surface portion, a cylindrical peripheral surface portion, and an inclined surface portion in correspondence to the inclined surface portion of the first backup ring. A cut portion is provided in a corner portion where the end surface portion and the inclined surface portion in the first backup ring intersect, and a corner portion where the peripheral surface portion and the inclined surface portion in the second backup ring intersect.
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: July 9, 2019
    Assignee: NOK Corporation
    Inventors: Kota Henmi, Makoto Hatano, Shuji Yoshitsune
  • Patent number: 10344862
    Abstract: A sealing element for a shaft coupling is disclosed. The sealing element may include an annular seal body and a plurality of projections circumferentially spaced around the seal body. One or more of the plurality of projections may include at least one of an axial component extending longitudinally in an axial direction from the seal body and/or a radial component extending radially inwards from the seal body towards the center axis. The sealing element is configured to retrofit into existing standard o-ring grooves and provides optimal lubrication, for example in a spline joint, by keeping the spline joint contact area submerged in lubricant and includes heat and debris removal with lubricant flow-through.
    Type: Grant
    Filed: January 7, 2016
    Date of Patent: July 9, 2019
    Assignee: Rolls-Royce Corporation
    Inventor: Jacob W. Harral
  • Patent number: 9989054
    Abstract: The invention features a seal assembly for a high pressure liquid system. The seal assembly includes a seal carrier having abuse portion defining a proximal end, a distal end, and a bore. The seal carrier also includes a seal disposed within the bore of the seal carrier. The seal carrier also includes a backup ring disposed within the bore of the seal carrier. The seal carrier also includes a hoop ring disposed substantially between the seal and the backup ring, the hoop ring having a proximal surface and an outer surface.
    Type: Grant
    Filed: March 9, 2015
    Date of Patent: June 5, 2018
    Assignee: Hypertherm, Inc.
    Inventors: David Osterhouse, Eric J. Chalmers, Jon W. Lindsay, Arion Vandergon, Cedar J. Vandergon
  • Patent number: 9732857
    Abstract: A solenoid actuated valve (10) holds pressure and volume of an accumulator with low leakage and provides low actuation drag during a release stroke for dumping fluid contents of the accumulator at very low current draw. Two elongate valve members (10a, 10b) are assembled to be movable axially relative to one another with a gland or groove (10c) formed in one of the two valve members (10a). An o-ring (12) located within the groove (10c) is in a non-contacting relationship to the other valve member (10b) when in a non-energized state. An energizer ring (14) located within the groove (10c) can reciprocate axially with respect to the o-ring (12). The energizer ring (14) moves axially toward the o-ring (12) in response to fluid pressure against a surface (14a) of the energizer ring (14) opposite from the o-ring (12) to axially compresses the o-ring (12), causing the o-ring (12) to expand radially outwardly into sealing contact with the other valve member (10b).
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: August 15, 2017
    Assignee: BORGWARNER INC.
    Inventors: Michael E. Jones, Jeffrey J. Waterstredt
  • Patent number: 9726032
    Abstract: A gas turbine engine includes a compressor assembly that is rotationally coupled to a shaft. The engine includes a radial diffuser assembly coupled to a shroud of the compressor assembly and positioned to receive compressed air from a centrifugal impeller. The radial diffuser assembly includes a first arcuate wall and a second wall, and a near axial diffuser coupled to the radial diffuser assembly and positioned to receive the compressed air from the radial diffuser assembly. The gas turbine includes a gas seal coupled between the second wall and a wall of the near axial diffuser, the gas seal configured to prevent the compressed air from passing through the seal while allowing relative motion between the radial diffuser assembly and the near axial diffuser.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: August 8, 2017
    Assignees: Rolls-Royce American Technologies, Inc., Rolls-Royce PLC
    Inventors: Robert A. Ress, Jr., Andrew Swift
  • Patent number: 9638364
    Abstract: A coupling unit is disclosed which includes a sleeve opening that extends in the longitudinal direction and into which at least one medium-conveying plug element can be at least partially inserted, A support sleeve includes at least one circumferential pocket on an inner side that faces a plug element and defines the sleeve opening transverse to the longitudinal direction. A sliding element is arranged in the pocket and movably transferred from a release position into a coupling position during the insertion of the plug element. A sealing element is arranged between the sliding element and the pocket of the support sleeve in the release position and pre-stressed in the direction of the plug element. The sealing element is released by the sliding element in the coupling position in order to close and seal a potential gap formed between the support sleeve and the plug element.
    Type: Grant
    Filed: October 31, 2014
    Date of Patent: May 2, 2017
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventor: Richard Mueller
  • Patent number: 9316317
    Abstract: A sealing apparatus includes: a case having a hollow portion; a shaft passing through the hollow portion; and a sealing member sealing between the case and the shaft, and including a resin ring and a ring-shaped rubber cap. The rubber cap includes a base portion and a lip portion. The lip portion includes a first lip contacting the resin ring and a second lip configured to contact an inner peripheral surface of the case. If a pressure of a first chamber of the lip portion side is lower than a pressure of a second chamber at the side of the base portion, the second lip is separated from the case to relieve the pressure of the second chamber to the first chamber. The base portion includes a first restricting surface for restricting the base portion from moving, and a second surface for restricting the base portion from moving.
    Type: Grant
    Filed: September 19, 2011
    Date of Patent: April 19, 2016
    Assignee: ADVICS CO., LTD.
    Inventors: Kei Okamura, Yoshitake Hisada
  • Patent number: 9309898
    Abstract: A pressure calibration device can include certain features that allow it to be used with a variety of hydraulic and pneumatic systems. A pressure calibration device can be configured to provide pressure or vacuum, and can have a mode selector for selecting to provide pressure or vacuum. A pressure calibration device can have a volume adjuster configured to modify pressures for hydraulic or pneumatic systems. A pressure calibration device can have a pressure release valve and a bleed valve for adjusting pressure values.
    Type: Grant
    Filed: February 19, 2013
    Date of Patent: April 12, 2016
    Assignee: King Nutronics Corporation
    Inventors: Amir Gnessin, Robert T Welther
  • Patent number: 9267441
    Abstract: An apparatus includes a bearing housing, a shaft assembly that extends through the bearing housing along a shaft axis, an annular groove formed on the shaft assembly, and a piston ring assembly that is engaged with the bearing housing and extends into the groove of the shaft assembly. The piston ring assembly includes a first ring portion and a second ring portion. The first ring portion has a first contact face that is oriented at a non-perpendicular with respect to the shaft axis, and the second ring portion has a second contact face that is oriented at a non-perpendicular angle with respect to the shaft axis and is engageable with the first contact face.
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: February 23, 2016
    Assignee: BORGWARNER INC.
    Inventors: Erwin Perry Ellwood, III, Sean Hastings
  • Patent number: 9194391
    Abstract: A plunger seal and a backup ring are provided at a portion of a pump chamber through which a plunger is inserted. A back face of the backup ring is supported on a wall face of a cleaning chamber. The backup ring is a combined backup ring including two resin layers, i.e., a deformable resin layer and a non-deformable resin layer. A face of the backup ring in contact with the plunger seal is made up of a face of the deformable resin layer and an inner peripheral face is made up of a face of the non-deformable resin layer. The deformable resin layer has a higher elastic modulus than the plunger seal and having such an elastic modulus as to be able to absorb deformation of the plunger seal. The non-deformable resin layer has a higher elastic modulus than resin of the deformable resin layer.
    Type: Grant
    Filed: July 25, 2011
    Date of Patent: November 24, 2015
    Assignee: SHIMADZU CORPORATION
    Inventor: Yoshiaki Aso
  • Patent number: 9187072
    Abstract: A shaft sealing device comprising: a first member; a second member provided with a through-hole through which the first member passes; a sealing member configured to seal a gap between the through-hole and the first member; a rotation restricting part restricting relative rotation between the first and second members; and an axial displacement restricting part restricting the axial displacement of the sealing member. The rotation restricting part includes a first contact portion provided on the first member, a second contact portion provided on the sealing member and an inclined surface included on the first contact portion. The axial displacement restricting part includes a stopper surface. When the sealing member rotates in one direction relative to the second member by being dragged by the first member, the sealing member contacts the stopper surface to restrict the axial displacement of the sealing member.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: November 17, 2015
    Assignee: ADVICS CO., LTD.
    Inventor: Yoshitake Hisada
  • Patent number: 9010725
    Abstract: A valve includes a stem seal assembly that prevent fluid flow in a first direction and vents in a second direction opposite the first direction. The assembly includes a packing assembly positioned within a valve stem opening of a valve body of the valve to seal a valve stem to the valve body. The packing assembly includes a first seal and a second seal preventing passage of fluid from a body cavity of the valve body to an exterior of the valve body along the valve stem while venting fluid from an exterior of the valve body to the body cavity along the valve stem. The packing assembly isolates the first seal and the second seal so that a load applied to the first seal ring is not transferred to the second seal ring.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: April 21, 2015
    Assignee: Vetco Gray Inc.
    Inventor: Rick C. Hunter
  • Patent number: 8960388
    Abstract: A spring (1) with fluid (2) including a containment body (3) having an inner chamber (4) in which the fluid (2) is inserted, a compression unit (8) slidably mounted on the containment body (3) and a sealing gasket (11) for the fluid (2) interposed between the containment body (3) and the compression unit (8) for preventing escape of the fluid (2) from the inner chamber (4); the spring (1) includes at least one closed loop (13) surrounding the compression unit (8), connected to the containment body (3) and in contact with the sealing gasket (11) so as to limit the deformation of the latter.
    Type: Grant
    Filed: August 1, 2012
    Date of Patent: February 24, 2015
    Inventors: Alberto Bordignon, Simone Bordignon
  • Patent number: 8857792
    Abstract: Seal ring assemblies for use with rotary valves and methods to manufacture the same are disclosed. A seal ring assembly is described that includes a ring-shaped seal to be fixed within the rotary valve, where the seal enables the sealing engagement of a control member with a flow control aperture. The seal is compressed between a first seal clamp and a second seal clamp by a compressive force maintained by a plurality of fasteners extending through the seal and fixed to the first and second seal clamps.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: October 14, 2014
    Assignee: Fisher Controls International LLC
    Inventors: Timothy Randall Parrie, Wilbur Dean Hutchens, Steven Douglas Cherry
  • Patent number: 8820708
    Abstract: Seal assemblies for use with fluid valves are described. An example valve trim assembly for use with fluid valves includes a cage and a seal assembly to be positioned in at least one of the cage, a cage retainer or a plug. The seal assembly includes a first seal and a first scraper. The first seal is to provide a load to the first scraper to prevent the ingress of contaminate to a dynamic sealing surface to be engaged by the first seal. Additionally, the seal assembly includes a second seal and a second scraper. The second seal is to provide a load to the second scraper. Further, the seal assembly includes a spacer between the first and second seals.
    Type: Grant
    Filed: July 17, 2009
    Date of Patent: September 2, 2014
    Assignee: Fisher Controls International LLC
    Inventor: Brandon Wayne Bell
  • Patent number: 8814139
    Abstract: A seal arrangement for providing a fluid seal of an annulus between two conforming surfaces such as a stem and a bore. The seal arrangement may include a pair of packing support rings. Preferably, two pairs of the packing support rings are used in order to provide double ended or two sided axial support for the packing. The first and second support rings support a load on the packing during normal or rated temperature use, with preferably an interference fit with the stem to resist extrusion of the packing along the stem. The support rings may be nested together and comprises different materials. For example, one support ring may comprise metal and the other support ring comprise a softer material such as a polymer or elastomer. An example of a packing material is a fire resistant material. The metal support ring may be used to maintain load on the fire resistant packing in the event that the other support ring has been destroyed by fire or other cataclysmic event.
    Type: Grant
    Filed: July 25, 2011
    Date of Patent: August 26, 2014
    Assignee: Swagelok Company
    Inventors: Daniel Griffin, Demetrius Lytle
  • Patent number: 8794638
    Abstract: A sealing array for positioning in an annular space between tubular members to provide a seal therebetween. The sealing array includes a pair of oppositely disposed backup rings, each defining a primary outer seal member of the sealing array. A pair of rigid cap rings is disposed between the backup rings. Each cap ring has a substantially planar surface and an oppositely disposed surface that engages one of the backup rings to energize the backup rings upon the application of sufficient pressure. The cap rings are sized to form controlled extrusion gaps with both tubular members. An energizing element is disposed between the planar surfaces of the cap rings. The energizing element engages a planar surface of at least one of the cap rings and seals the extrusion gaps associated with the engaged cap ring upon the application of sufficient pressure.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: August 5, 2014
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Ira Gene Tuckness, Russell Irving Bayh, III, David Lynn Reesing
  • Patent number: 8714560
    Abstract: A seal assembly for use with valves is described. An example seal assembly includes a first seal and a second seal opposite the first seal. The first and second seals are to sealingly engage a closure member of a valve and a sealing surface opposite the closure member. A spacer ring is disposed between the first and second seals to prevent the first and second seals from contacting each other. Additionally, the spacer ring is sized so that the spacer ring does not contact the closure member or the sealing surface.
    Type: Grant
    Filed: April 28, 2009
    Date of Patent: May 6, 2014
    Assignee: Fisher Controls International LLC
    Inventor: Wayne Russell Faas
  • Publication number: 20130292909
    Abstract: An elastomeric or polymeric seal assembly (10) includes an annular elastomeric or polymeric sealing element (60), an internal circumferential surface of which sealingly engaging a first component (12), the sealing element abutting a radial annular face of a second component (16) and an external circumferential surface of the sealing element sealingly engaging an internal circumferential surface of a second component, a vent (92) being provided in the internal circumferential surface of the second component adjacent to the radial face, to vent the space between the external circumferential surface of the sealing element and the internal circumferential surface of the second component, an inlet to the vent being defined by an annular groove (88) in the internal circumferential surface of the second component, an annular helically wound element (94) being provided in the annular groove to prevent extrusion of the sealing element into the vent, the helically wound element being formed from a strip of material of
    Type: Application
    Filed: December 12, 2011
    Publication date: November 7, 2013
    Applicant: John Crane UK Limited
    Inventors: Nicholas Derek Quarmby, Bhikhubhai Chhanabhai Patel
  • Publication number: 20130180733
    Abstract: The present invention relates to seal ring back-up devices suitable for use on glands in sealing systems. In particular, the present invention relates to seal ring back-up devices that have been designed to fit into essentially all types of glands and close extrusion gaps. Some embodiments of the present invention provide a seal ring back-up device having an annular body having an inner diameter, an outer diameter, and a scarf cut; and where the annular body is configured to fit a gland and engage a seal ring.
    Type: Application
    Filed: January 18, 2012
    Publication date: July 18, 2013
    Applicant: Halliburton Energy Services, Inc.
    Inventors: Richard S. Bradshaw, Jeremy Buc Slay
  • Patent number: 8474829
    Abstract: To prevent breakage of a sealing device having a main sealing body installed within an annular installing groove (31) formed in one member (3) to slidably and concentrically contact with the other member (2) and a backup ring (12) arranged at a non-sealing space side of said main sealing body, a height (h1±?h1) of said backup ring (12) in a facing direction of a bottom surface (31a) of said installing groove (31) to the other member (2) is greater than a facing distance (L±?L) between the bottom surface (31a) and the other member (2), and said backup ring (12) has a cross-sectional shape which is symmetrical in a thickness direction thereof, and has an easily compressible part (12a) which can be compressed to the extent of the difference (x) between said height (h1±?h1) and said facing distance (L±?L).
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: July 2, 2013
    Assignee: NOK Corporation
    Inventors: Masaya Otsuka, Shigemi Matsuo, Daihachi Shojima
  • Patent number: 8444185
    Abstract: An extrusion resistant ring that is radially expandable and contactable to accommodate the relative movement of two joined bodies relative to each other. The extrusion resistant ring in combination with an elastomeric diaphragm provides a high pressure seal for down-hole oil drilling apparatus.
    Type: Grant
    Filed: June 23, 2010
    Date of Patent: May 21, 2013
    Assignee: Parker-Hanninfin Corporation
    Inventors: Darron G. Peddle, E. Bruce Whitehead
  • Publication number: 20130043661
    Abstract: Device, system, and method are described directed to seal assemblies with support to reduce seal extrusion under high to very high pressure changes due to repeated piston reciprocating movement. In some examples, concave features are incorporated on the inner and outer edges of support and backup ring elements to support and hug the preceding element and constrain extrusion, as well as utilizing multiple contact points on certain elements in order to reduce friction against the dynamic surface. The seal assemblies described herein can also incorporate bearing surfaces to reduce damage to seal ID due to off-axis floating rod, such as incorporating one or more multi-point contacts to reduce friction.
    Type: Application
    Filed: August 15, 2012
    Publication date: February 21, 2013
    Applicant: BAL SEAL ENGINEERING, INC.
    Inventors: Michael Binder, Amin Tariq
  • 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
  • Patent number: 8262091
    Abstract: A seal assembly is provided for sealing a gap with a high pressure side and a low pressure side between a first component and a second component. The seal assembly can include a primary seal configured to be arranged on the first component and spanning the gap on the high pressure side between the first and second component; and a backup ring configured to be arranged on the first component adjacent the primary seal on the low pressure side. The backup ring includes an inner diameter and a scarf cut slit at an angle that is a function of the inner diameter of the backup ring.
    Type: Grant
    Filed: August 29, 2008
    Date of Patent: September 11, 2012
    Assignee: Honeywell International Inc.
    Inventor: Steven Alan Lewis
  • Patent number: 8215646
    Abstract: A sealing assembly for a shaft includes a sealing component, a first ring, a second ring, and at least one energizer. The first ring is annularly disposed about the shaft, the first ring having at least one first protuberance interfittable with the sealing component. The second ring is annularly disposed about the shaft in facing opposition to the first ring, the second ring having at least one second protuberance interfittable with the sealing component. The at least one energizer energizes the seal component, the at least one energizer being adjacent the at least one first protuberance or the at least one second protuberance.
    Type: Grant
    Filed: August 28, 2008
    Date of Patent: July 10, 2012
    Inventors: Larry J. Castleman, Gregory D. Jones, Brian Bowen
  • Publication number: 20120038113
    Abstract: A seal backup ring is provided with undulating surfaces which create circumferential convergence with a relatively rotatable surface. The backup ring is configured so that differential pressure acting across a rotary seal forces portions of the backup ring against the relatively rotatable surface, closing, or substantially closing, the extrusion gap that the rotary seal is exposed to. In response to relative rotation between the backup ring and the mating relatively rotatable surface, the circumferential convergence promotes hydrodynamic lubrication within the dynamic interface that exists between the backup ring and the relatively rotatable surface. The modulus of elasticity of the backup ring is greater than the modulus of elasticity of the rotary seal.
    Type: Application
    Filed: February 11, 2011
    Publication date: February 16, 2012
    Inventors: Lannie Laroy Dietle, Aaron Richie, Victor Garcia, JR., Jeffrey D. Gobeli, John Erick Schroeder
  • Patent number: 8016295
    Abstract: A helical backup element includes a tubular body of material and a helical opening in the tubular body.
    Type: Grant
    Filed: May 19, 2008
    Date of Patent: September 13, 2011
    Assignee: Baker Hughes Incorporated
    Inventors: Randall V. Guest, Marc N. Samuelson, Justin P. Vinson, Dennis E. Kroll
  • Patent number: 7900935
    Abstract: To reduce a shaft insertion load and prevent extrusion of a seal ring to the low pressure side, a sealing device has a seal ring in an installation groove formed on a shaft to have a tapered groove bottom section and a backup ring having a tapered section corresponding to the tapered groove bottom section, a gap is provided between a side wall surface at the low-pressure side of the mounting groove and a side end surface of the backup ring, a peripheral surface of the backup ring at the opposite side of the tapered section has a tapered surface which comes closer to a peripheral surface of a housing at the low-pressure side, and the tapered section is formed to have a two-staged taper.
    Type: Grant
    Filed: November 10, 2006
    Date of Patent: March 8, 2011
    Assignee: NOK Corporation
    Inventor: Hidekazu Kanagae
  • Patent number: 7900934
    Abstract: To reduce a shaft insertion load and ensure a sealing function, a carbon dioxide gas sealing device has a seal ring provided in a mounting groove having a tapered groove bottom, a backup ring having a tapered portion corresponding to the tapered groove bottom, and a gap provided between the side wall surface at the low pressure side of the mounting groove and a side end surface at the lower pressure side of the backup ring, a tapered surface that approaches the peripheral surface of a housing from the side end surface on the high pressure side toward the lower pressure side is provided on the peripheral surface on the side opposite to the tapered portion and the tapered portion has two-stage tapers.
    Type: Grant
    Filed: November 10, 2006
    Date of Patent: March 8, 2011
    Assignee: NOK Corporation
    Inventor: Hidekazu Kanagae
  • Patent number: 7896354
    Abstract: A composite sealing material to be installed in a sealing groove includes a first sealing member that is located on the outer peripheral side of the sealing groove and that is made of an elastic member; and a second sealing member that is located on the inner peripheral side of the sealing groove and that is made of a material harder than the first sealing member, wherein the first sealing member is provided with a crosswise protrusion formed projecting in a radial inner direction from a radial inner side of the almost central section of the thickness direction; the second sealing member is formed in an almost cross sectional C shape by flange portions and formed at the both ends and an inner wall portion in an almost linear shape for connecting the flange portions; and a space is ensured between the crosswise protrusion and the inner wall portion in an almost linear shape of the second sealing member in a state that the first sealing member and the second sealing member are assembled in an integrated manner.
    Type: Grant
    Filed: February 8, 2007
    Date of Patent: March 1, 2011
    Assignee: Nippon Valqua Industries, Ltd.
    Inventor: Akira Muramatsu
  • Patent number: 7866669
    Abstract: When the composite sealing material is press-fitted, the swelled portion of the first sealing portion of a first sealing member is press-fitted to impart sealing ability, the second extended portion of a second sealing member is pressed to the opening portion side of a sealing groove through the first extended portion of the first sealing member, and the upper surface of the second sealing portion is press-fitted to impart sealing ability.
    Type: Grant
    Filed: May 12, 2005
    Date of Patent: January 11, 2011
    Assignee: Nippon Valqua Industries, Ltd.
    Inventors: Yukio Kobayashi, Akira Muramatsu
  • Publication number: 20100230905
    Abstract: A shaft sealing device (80) that partitions a high-pressure zone and a low-pressure zone from each other in a fluid machine has an elastic member (86) including a seal portion (88) that is brought into sliding contact with a seat face of a contact-target member that is either a rotary shaft (60) or a casing (12), and a case (82) that supports the elastic member (86). The elastic member (86) has a first elastic portion that continues to a high-pressure side boundary of the seal portion (88), which is located in the high-pressure zone side, and a second elastic portion that continues to a low-pressure side boundary of the seal portion (88), which is located in the low-pressure zone side. The case (82) restrains regions of the first and second elastic portions, the regions being located away from the seal portion (88).
    Type: Application
    Filed: March 26, 2007
    Publication date: September 16, 2010
    Applicant: Sanden Corporation
    Inventors: Jiro Iizuka, Takashi Fukumuro, Keiichi Shimizu, Iwao Uchikado, Hidenori Hosoi, Yuji Oowa
  • 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
  • Patent number: 7651100
    Abstract: An improvement in a seal assembly for sealing with a rotatable component extending within the seal assembly and defining a longitudinal axis of rotation, the seal assembly being of a type including a seal element retained by a seal housing, where one of the seal element and the seal housing is constructed from a compressible material, where the seal element includes a seal engagement surface and where the seal housing includes a housing engagement surface. The improvement includes one of the seal engagement surface and the housing engagement surface being comprised of the compressible material and the other being oriented in a plane normal to the longitudinal axis of rotation of the component extending within the seal assembly and defining a depression for providing an isolated gap between the seal engagement surface and the housing engagement surface for receiving the compressible material to restrain movement of the seal element relative to the seal housing.
    Type: Grant
    Filed: February 3, 2004
    Date of Patent: January 26, 2010
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Edward James Cargill
  • Patent number: 7648144
    Abstract: In a sealing device of the present invention, a support ring is fitted in an annular recessed part formed on the inner peripheral surface of a seal lip part independently of a reinforcement ring to support the seal lip part from the inner peripheral side, and the support ring is supported axially by a reinforcement ring via an interposed part. Thereby, when a rotating shaft is inserted into the seal ring, a contact area between a seal part and the rotating shaft can be made appropriate, and when a high pressure is applied to the seal lip part, an increase in contact area between the seal part and the rotating shaft can be suppressed within an appropriate range and the seal part becomes able to follow the eccentricity of the rotating shaft.
    Type: Grant
    Filed: June 17, 2005
    Date of Patent: January 19, 2010
    Assignee: Eagle Industry Co., Ltd.
    Inventor: Masamitsu Sanada
  • Publication number: 20090267307
    Abstract: A high pressure tube seal is provided including a rigid cylindrical tube having an elastomeric seal body molded to an outer surface of the cylindrical tube. The elastomeric seal body includes a pair of raised seal bead portions at opposite ends of the seal body and a pair of recessed groove portions adjacent to the pair of recessed seal bead portions. A pair of anti-extrusion rings are disposed in the recessed groove portion in the cylindrical tube and includes a radially outwardly extending annular portion disposed between a pair of recessed groove portions of the elastomeric seal body. The anti-extrusion rings provide increased pressure sealing capability as compared to conventional tube seal designs.
    Type: Application
    Filed: April 28, 2008
    Publication date: October 29, 2009
    Applicant: FREUDENBERG-NOK GENERAL PARTNERSHIP
    Inventors: Timothy T. Smith, David M. Seaborn
  • 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: 20090230632
    Abstract: A seal is formed from one or more elastomeric materials having a low glass transition temperature for high pressure, and both high and low temperature sealing applications. In an exemplary embodiment, the glass transition temperature (Tg) of the material may be ?35° C. or lower. The seal is adapted to repeatedly form and maintain a seal across a temperature range from 0° C. or lower to +122° C. or greater at pressures up to 15,000 p.s.i.g. or greater. The invention has numerous applications, such as for land-based use, marine surface and marine subsea uses. An anti-extrusion device may circumscribe the upper and lower edges of the material body. The invention also comprises fabrication methods for elastomer or polymeric seals.
    Type: Application
    Filed: March 3, 2009
    Publication date: September 17, 2009
    Applicant: VETCO GRAY INC.
    Inventors: Donald R. Petrash, Steven C. Ellis
  • Publication number: 20090189358
    Abstract: An apparatus is disclosed in one embodiment of the invention as including an annular seal (e.g., an o-ring) and a backup ring to provide support to the annular seal. A gland is provided to accommodate the backup ring and the annular seal. The gland has a contact surface which is adapted to contact a corresponding contact surface of the backup ring upon inserting the backup ring into the gland. The diameters of the contact surfaces of the backup ring and gland are sized such that the contact surface of the backup ring radially interferes with the contact surface of the gland, thereby urging the backup ring out of the gland. A retention mechanism, such as interlocking grooves, protrusions, ridges, notches, slots, or the like may be provided in the backup ring and gland respectively to prevent the backup ring from completely exiting the gland.
    Type: Application
    Filed: January 25, 2008
    Publication date: July 30, 2009
    Inventors: Michael Briscoe, James McPherson, David A. Pixton
  • Publication number: 20090121443
    Abstract: To reduce a shaft insertion load and prevent extrusion of a seal ring to the low pressure side, a sealing device (1) has a seal ring (20) in an installation groove (10) formed on a shaft (2) to have a tapered groove bottom section (12) and a backup ring (30) having a tapered section (35) corresponding to the tapered groove bottom section (12), a gap (g) is provided between a side wall surface (11) at the low-pressure side (L) of the mounting groove (10) and a side end surface (32) of the backup ring (30), a peripheral surface (34) of the backup ring (30) at the opposite side of the tapered section (35) has a tapered surface (36) which comes closer to a peripheral surface (3a) of a housing (3) at the low-pressure side (L), and the tapered section (35) is formed to have a two-staged taper.
    Type: Application
    Filed: November 10, 2006
    Publication date: May 14, 2009
    Applicant: NOK Corporation
    Inventor: Hidekazu Kanagae
  • Patent number: 7516963
    Abstract: The invention relates to a sealing arrangement with an elastic sealing ring, which is located in sealing fashion between a first and a second component in a continuous groove (3) running around the first component, and is compressed in the groove in installed state, deforming its cross-section. At least one supporting ring (21, 22) is provided, which lies in sealing fashion against the sealing ring, while an opposite, supporting surface (9) lies against a groove flank (6) The supporting ring (21, 22) is positioned by the compressed sealing ring (2) in its position at the gap (13) to be sealed between the first and second components. As a result, extrusion of the sealing ring through the gap provided between the two components to be sealed is prevented.
    Type: Grant
    Filed: October 17, 2005
    Date of Patent: April 14, 2009
    Assignee: GAPI Technische Produkte GmbH
    Inventor: Dieter Meller
  • 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: 7377482
    Abstract: A gasket ring assembly for use with the rotating ball in a ball valve, the gasket ring assembly including a substantially L-shaped support and a toroidal elastomer gasket. The substantially L-shaped support includes a horizontal section and a vertical section. The horizontal section includes a groove and a tooth for holding the toroidal elastomer gasket in place. The toroidal elastomer gasket is fixedly attached to the substantially L-shaped support and is in direct contact with the outer surface of the rotating ball.
    Type: Grant
    Filed: July 24, 2002
    Date of Patent: May 27, 2008
    Inventors: Giovanni Cipolla, Sandro Bonomi
  • Patent number: 7341258
    Abstract: A seal assembly seals first and second operational surfaces spaced apart by a gap. The first surface includes a seal groove having a base surface and first and second side surfaces. A sealing element in the seal groove has a foot portion extending parallel to the base surface which engages the second operational surface. A leg portion extending from the foot portion toward the base surface has first and second surfaces. A back-up ring adjacent to the sealing element prevents extrusion of the sealing element into the gap. A first side of the back-up ring mates with the second surface of the leg portion, and a second side mates with one of the first and second side surfaces of the seal groove. An energizer element located between the base surface and the foot portion applies uniform pressure to the leg and foot portions when the energizer element is compressed.
    Type: Grant
    Filed: September 24, 2004
    Date of Patent: March 11, 2008
    Assignee: Greene, Tweed of Delaware, Inc.
    Inventors: Augustus Brooks Holt, Paul E. Roberts, Alan P. Schofield
  • Patent number: 7240904
    Abstract: A secondary sealing element comprises a base body (12) made of a synthetic material and comprising a base portion (13) and a seal portion (14) which each comprise coaxially aligned, axially adjacent through bores (17, 31) for the passage of a component, and an annular disc element (25) accommodated in the base portion and comprising a through bore (30) coaxially aligned with the through bores in the base and seal portions and being made of a material which differs from that of the base body. In the unloaded state, the through bore (30) of the annular disc element (25) has a radial dimension d which is greater than that D2 of the through bore (31) in the seal portion (14) and smaller than that D1 in the base portion (13) of the base body (12). The annular disc element consists of a carbon material. An important field of application for the secondary sealing element is that of mechanical face seals for sealing relatively moveable components.
    Type: Grant
    Filed: November 12, 2003
    Date of Patent: July 10, 2007
    Assignee: Burgmann Industries GmbH & Co. KG
    Inventors: Peter Dröscher, Klaus Lang, Günther Lederer, Josef Nosowicz, Andreas Schrüfer, Georg Steigenberger, Peter Waidner