Patents Examined by Vishal Patel
  • Plug-in piece
    Patent number: 9388921
    Abstract: A plug-in piece 1 for sealing connection of two mutually assigned cylindrical surfaces includes an essentially tubular support body 2, which on its ends exhibits annularly encircling sealing elements, which can be made to engage to produce a sealing connection with the cylindrical surfaces to be sealed, wherein at least one of the sealing elements is configured as an annularly encircling sealing bead 3, 30 on the outer surface of the support body 2, with a spherically curved sealing surface. Provision is made that the spherical radius of the sealing surface (3, 30) is chosen so that the center of the sphere is roughly at the axis of support body (2) symmetry. Thus, the compression forces are ensured to remain largely constant, independent of the angular setting over the entire surface of the sealing bead.
    Type: Grant
    Filed: August 28, 2013
    Date of Patent: July 12, 2016
    Assignee: Carl Freudenberg KG
    Inventors: Hans Unger, Ralf Heldmann, Ingo Stephan, Markus Clemens, Carsten Hartmann, Ernst Jakob, Stephan Reddig
  • Seal
    Patent number: 9365283
    Abstract: A foldable seal comprising an elastomeric seal substrate and at least one molded-in stiffener plate embedded within the seal substrate. Also, a method of manufacturing the seal.
    Type: Grant
    Filed: November 7, 2011
    Date of Patent: June 14, 2016
    Assignee: AIRBUS OPERATIONS LIMITED
    Inventors: James Wilson, Colin John West, David Alistair Sutton, Paul Hadley
  • Assembly for sealing a sliding interface
    Patent number: 9360112
    Abstract: An assembly is disclosed for sealing the sliding interface between two objects capable of sliding or moving with respect to one another, but where the sliding interface must provide a substantial seal against pressure loss therethrough, such as where an assembly seals the sliding interface between a piston and a cylinder or between a rod and a bushing. The sliding interface includes a seal located in a seal groove, wherein the seal ring height is less than the height of the seal groove and the inner diameter of the seal is greater than the base of the groove. In one aspect, the difference in height is set by a shim and a piece of material of the same height as that of the seal ring.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: June 7, 2016
    Assignee: Cool Energy, Inc.
    Inventors: Lee S. Smith, Brian Phillip Nuel
  • Magnetic fluid seal
    Patent number: 9360118
    Abstract: A magnetic fluid seal is provided, capable of producing a stable scaling performance by stably holding magnetic fluid in place between two members, even in cases when the two members become eccentric. The magnetic fluid seal includes: an annular magnetic circuit forming member that is disposed on a housing; an annular member that is disposed on a shaft; and a magnetic fluid that is magnetically held between axially opposing surfaces of the magnetic circuit forming member and the annular member. In addition, the annular member comprises a flexible member that is swayable so that a portion of the annular member that opposes the magnetic circuit forming member follows the magnetic circuit forming member.
    Type: Grant
    Filed: January 16, 2012
    Date of Patent: June 7, 2016
    Assignee: Eagle Industry Co., Ltd.
    Inventor: Takuto Fukuhara
  • Turbomachine secondary seal assembly
    Patent number: 9316119
    Abstract: An exemplary turbomachine secondary ring seal assembly includes a base portion that extends circumferentially about an axis and a protrusion extending from the base portion toward the axis. The protrusion has a sealing surface that contacts a support to limit movement of a fluid from a first axial side of the base portion to a second opposite axial side of the base portion. The sealing surface faces the axis. The sealing surface may also face in a radial direction.
    Type: Grant
    Filed: September 15, 2011
    Date of Patent: April 19, 2016
    Assignee: United Technologies Corporation
    Inventor: Masayoshi Sonokawa
  • Valve stem seal device
    Patent number: 9303768
    Abstract: A valve stem seal device has a valve stem guide, a cylindrical metallic ring retained to an outer periphery of the valve stem guide, a rubbery elastic seal lip integrally formed in one end side of the metallic ring, and hermetically sliding to the valve stem, and a valve stem seal having the cylindrical metallic ring and the seal lip and fixed to the valve stem guide side. The valve stem seal device has a stop ring retained between a circular-truncated-cone-shaped surface which is expanded toward a side of the seal lip formed in an outer peripheral surface of the valve stem guide, and a cylindrical inner peripheral surface of the metallic ring. The stop ring has a cut part, and a movement limiting means for limiting a movement in an axial direction of the stop ring is provided in the other end side of the metallic ring.
    Type: Grant
    Filed: November 29, 2011
    Date of Patent: April 5, 2016
    Assignee: NOK Corporation
    Inventors: Yasunari Hamaya, Kokichi Hamamoto
  • Rubber ring for gasket
    Patent number: 9303587
    Abstract: A rubber ring for a gasket has a first bulging portion composing a seal portion; a second bulging portion composing an attachment portion; and a depressed portion between the first bulging portion and the second bulging portion. The first bulging portion includes a thickest portion carrying out a sealing function, and when the rubber ring is compressed from both sides, the second bulging portion and the depressed portion have a thickness which does not contact with the faces sandwiching the gasket. An end of the metal plate is positioned in a range of the depressed portion between the first bulging portion and the second bulging portion, and between changing points wherein each of slope face, sloping toward the depressed portion from the two bulging portions, changes into a curved surface concaving on an outer side from a curved surface projecting on the outer side.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: April 5, 2016
    Assignee: ISHIKAWA GASKET CO., LTD.
    Inventor: Yutaka Munekata
  • Seal ring
    Patent number: 9291271
    Abstract: Sandwiching of a foreign matter between a seal ring and a housing is suppressed, and abrasion of the housing and the seal ring is suppressed. The size of the diameter of a second seal portion 3 is set to be larger than the size d2 of the diameter of an inner peripheral face 81 so that the difference in diameter size between the second seal portion 3 and an inner peripheral face 81 of a housing 80 becomes 1.0 mm or less in a state before the ring body is provided in the annular gap.
    Type: Grant
    Filed: July 25, 2013
    Date of Patent: March 22, 2016
    Assignee: NOK CORPORATION
    Inventor: Nobuyuki Eguchi
  • Cylinder head gasket
    Patent number: 9291121
    Abstract: A cylinder head gasket includes a plurality of seal plates 1 to 4 so that a combustion gas that leaks through a gap between the respective seal plates is reliably sealed. The cylinder head gasket includes the plurality of seal plates 1 to 4, which are held between a cylinder head and a cylinder block having a cylinder bore. The plurality of seal plates 1 to 4 are adhered to each other in a circumferentially continuous manner around combustion chamber holes 1a to 4a, and the combustion gas that leaks through the gap between the respective seal plates is reliably sealed within an adhered portion 5 of the respective seal plates.
    Type: Grant
    Filed: November 6, 2013
    Date of Patent: March 22, 2016
    Assignee: NIPPON GASKET CO., LTD.
    Inventors: Shingo Mori, Tomoaki Matsubara, Ryosuke Fujiki
  • Spiral-wound gasket
    Patent number: 9285062
    Abstract: A spiral-wound gasket for use in a HF alkylation unit and positioning between facing conduit flanges includes an outer ring, an inner ring, and low-compression spiral-wound portion positioned between the outer ring and the inner ring.
    Type: Grant
    Filed: October 21, 2008
    Date of Patent: March 15, 2016
    Assignee: Lamons Gasket Company
    Inventors: Willie A. Jenkins, Julie L. Simonton
  • Arrangement having a seal, seal, and turbocompressor
    Patent number: 9273695
    Abstract: An arrangement having an annular seal extending about a machine axis, and a vessel for sealing an L-shaped gap extending along a circumferential direction between a main vessel body and a cover is provided. A radial section of the gap extends in the radial direction and circumferential direction, and an axial segment extends in the axial direction and the circumferential direction. A sealing chamber is provided in the region where the radial segment and the axial segment intersect, the chamber expanded radially and axially relative to the adjacent gap segments. A seal is disposed in the sealing chamber, and a greater pressure is present in the radial segment than in the axial segment, the pressure differential sealed by means of the seal. The seal includes a support ring disposed radially inward made of a first material, and a jacket element made of a second material.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: March 1, 2016
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Sebastian Huth, Dieter Nass
  • Backup system for packer sealing element
    Patent number: 9267353
    Abstract: Backup rings are disposed on opposed sides of a sealing element. The backup rings are initially bow shaped in the run in position. Opposed ends of the bow shape are brought together to extend the extrusion barriers and compress the sealing element. The relative axial movement that brings the opposed ends of the bow shape together results in radially extending the bow shape. The bow shape is reformed into a teardrop shape that extends radially beyond a pinch location created by relative axial movement of adjacent support members coming closer together. A sealing element extends radially during the deployment of the extrusion barriers and is contained between them. The extension of the extrusion barriers allows conformance to surface irregularities in the surrounding tubular or wellbore wall.
    Type: Grant
    Filed: December 13, 2011
    Date of Patent: February 23, 2016
    Assignee: Baker Hughes Incorporated
    Inventor: YingQing Xu
  • Seal assembly including partially filled gaps
    Patent number: 9267602
    Abstract: A seal assembly between a rotor and a stator is disclosed. In one embodiment, the seal assembly includes: a rotor; a stator positioned around the rotor; and a plurality of seal leaves positioned between the rotor and the stator, the plurality of seal leaves circumferentially stacked around the rotor to define a seal ring between the rotor and the stator, wherein gaps between adjacent seal leaves are partially filled, such that contact faces and residual gaps are between adjacent seal leaves, wherein the contact faces generate friction to dampen vibrations during operation. Such damping effects still allow the compliant motion of the seal leaves with minimal leaf vibration. Also, thicker and more resilient leaves may be applied with reduced leakage through the root gaps.
    Type: Grant
    Filed: November 19, 2012
    Date of Patent: February 23, 2016
    Assignee: General Electric Company
    Inventors: Yuefeng Luo, William Edward Adis, Hrishikesh Vishvas Deo
  • Sealing apparatus for a process chamber
    Patent number: 9261193
    Abstract: A sealing apparatus is provided herein. In some embodiments, the sealing apparatus includes an annular body including a first portion having a circular cross-section and a second portion extending radially outward from the first portion, wherein the second portion has a rectangular cross-section. In some embodiments, a sealing apparatus includes a body configured to be retained in a recess of a first surface; an arm extending from the body away from the first surface and configured to provide a force when deflected towards the body by a second surface to form a seal between the first surface and the second surface.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: February 16, 2016
    Assignee: APPLIED MATERIALS, INC.
    Inventor: Joseph Yudovsky
  • Seal assembly
    Patent number: 9243715
    Abstract: A fluid seal assembly consists of a seal element of compliant material that is retainingly carried by a seal carrier. The seal carrier includes one or more elements of relatively rigid material defining a sealing face with a seal-receiving groove interrupting the sealing face. The seal-receiving groove has groove-defining walls each of which has a proximal end at the sealing face and a distal end. The groove-defining walls serve as seal contact surfaces. The seal contact surfaces are configured such that the seal-receiving groove narrows toward its distal end. The seal-receiving groove has a depth and a breadth suitable for accepting the seal element, with the seal element projecting past the sealing face when compressed to be in contact with the seal contact surfaces.
    Type: Grant
    Filed: June 8, 2010
    Date of Patent: January 26, 2016
    Assignee: NOETIC TECHNOLOGIES INC.
    Inventors: Maurice William Slack, Matthew Hollis Allen
  • Labyrinth seal for turbines
    Patent number: 9234434
    Abstract: An improved labyrinth seal is described with the seal including a group of several fins forming circumferential barriers against the flow of a working fluid between stationary and rotating parts in a turbine, wherein within the group the volume between the penultimate fin and the last fin is altered compared to the average volume between other adjacent fins of the group.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: January 12, 2016
    Assignee: ALSTOM Technology Ltd
    Inventors: Vasileios Stefanis, Christos Georgakis
  • Flexible stuffing box packing assembly
    Patent number: 9234588
    Abstract: A flexible stuffing box packing assembly has fifth rings which are placed within a stuffing box. The pressures are transferred along the sequence of the first, second, third, fourth and fifth rings. The gaps between the first and second rings and between the fourth and fifth rings provide a space for expansion of the rings. The V shape recesses in various rings provide margins for the materials of the rings to expansion. Therefore, the structure provides that all rings can expand effectively without destroying the seal structure and the stresses from various rings will disperse effectively so that lifetime of the rings are prolong.
    Type: Grant
    Filed: December 8, 2013
    Date of Patent: January 12, 2016
    Assignee: JDC CONTROL VALVES CO., LTD.
    Inventor: Yi-Ming Fan
  • Sealing gasket
    Patent number: 9228684
    Abstract: An annular sealing gasket for forming a sealing connection between a first tubular member and a second tubular member. The annular sealing gasket comprises a flexible sealing portion adapted to form a sealing connection between a first tubular member and a second tubular member and a body region adapted for supporting the flexible sealing portion and anchoring the annular sealing gasket to a secured connection. The body region further comprises spaced first and second conical legs extending convergingly away from the body region transversely from the flexible sealing portion.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: January 5, 2016
    Assignee: Springseal, Inc.
    Inventor: Mark Knapp
  • Sealing assembly for a rolling bearing
    Patent number: 9212699
    Abstract: A sealing assembly for a rolling bearing. The sealing assembly has at least one cover element for covering a bearing gap along a cover plane. The cover element has a securing section, a sealing collar, a base part connecting the securing section and the sealing collar, and at least one sealing surface provided on the sealing collar for non-contact sealing. At a starting section the sealing collar extends from the base part diagonally toward the inner side of the cover element facing the bearing interior and at an end section the sealing collar extends from the inside toward the outer side of the cover element facing away from the bearing interior. At the same time, the sealing collar forms a sealing surface substantially perpendicular to the cover plane and at the end of the end section at least one edge impeding the inflow of impurities into the bearing interior.
    Type: Grant
    Filed: May 10, 2010
    Date of Patent: December 15, 2015
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Harry Fritz, Claus Guckenberger, Stephan Herbst
  • Assembly for sealing a sliding interface
    Patent number: 9206900
    Abstract: An assembly is disclosed for sealing the sliding interface between two objects capable of sliding or moving with respect to one another, but where the sliding interface must provide a substantial seal against pressure loss therethrough, such as where an assembly seals the sliding interface between a piston and a cylinder or between a rod and a bushing. The sliding interface includes a seal located in a seal groove, wherein the seal ring height is less than the height of the seal groove and the inner diameter of the seal is greater than the base of the groove. In one aspect, the difference in height is set by a shim and a piece of material of the same height as that of the seal ring.
    Type: Grant
    Filed: December 6, 2011
    Date of Patent: December 8, 2015
    Assignee: Cool Energy, Inc.
    Inventors: Lee S. Smith, Brian Phillip Nuel