Patents Examined by L. Susmitha Koneru
  • Method and apparatus for rotating sleeve engine hydrodynamic seal
    Patent number: 10563509
    Abstract: An improved sealing system for a poppet valve rotating sleeve internal combustion engine with rotating liners. A hydrodynamic face seal assembly includes a spring pre-load assembly provides a uniform loading to a primary sealing ring. A secondary seal is provided between the primary sealing ring and the cylinder head. Hydrodynamic face seal features are provided either on the mating face of the primary sealing ring or on the annular face of the rotating liner. The hydrodynamic face seal features include an inner sealing zone, and an outer loading zone with a plurality of hydrodynamic lift pads, and dam features which create converging surfaces. A lubricant is provided to the annular face of the rotating liner, so that a lubricant layer can be maintained between the primary sealing ring mating face and the rotating liner.
    Type: Grant
    Filed: April 4, 2013
    Date of Patent: February 18, 2020
    Inventor: Dimitrios Dardalis
  • Floating interstage seal assembly
    Patent number: 10533441
    Abstract: A labyrinth seal system comprises a knife element and a stator element, the knife element having a plurality of teeth radially extending from a base and the stator element having a radially inner surface configured to interact with the plurality of teeth to create a seal. The knife element is axially constrained by and rotationally coupled to a turbine component, but has a degree of freedom in the radial direction with respect to that component.
    Type: Grant
    Filed: June 2, 2017
    Date of Patent: January 14, 2020
    Assignee: ROLLS-ROYCE CORPORATION
    Inventors: James E. Sellhorn, Michael Whitten
  • Reinforcement structure for bead seal in a plate assembly
    Patent number: 10522852
    Abstract: A plate assembly includes a first plate having a planar portion and a first bead seal formed therein. The first bead seal includes a first end surface spaced away from the planar portion. The first bead seal includes first and second opposing sides extending away from the first end surface and contiguous with the planar portion. The first bead seal includes a first reinforcement structure having a first plurality of walls each intersecting the first opposing side of the first bead seal. The first plate includes a second bead seal formed therein. The first bead seal and the second bead seal may be joined via the first reinforcement structure such that the first plurality of walls of the first reinforcement structure each intersect a third opposing side of the second bead seal.
    Type: Grant
    Filed: February 6, 2017
    Date of Patent: December 31, 2019
    Assignees: GM Global Technology Operations LLC., Honda Motor Co., Ltd.
    Inventors: Xi Yang, Siguang Xu, Liang Xi, Richard D. Blakeley, Masaaki Sakano, Yu Tomana, Kentaro Ishida
  • Seal
    Patent number: 10520090
    Abstract: A device to provide a seal between a housing for a moving element such as a drill chain, piston or the like and the moving element. The device comprising a storage well to retain seal material, the block having an outlet connecting with an aperture in a housing enabling seal material to flow into the space between a housing and the moving element and form a seal, the device further including an inlet port enabling seal material precursor to be added into the block, and pressurising means to pressurise the seal material precursor and force it out of the aperture.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: December 31, 2019
    Assignee: Redseal Limited
    Inventor: Martin McKenzie
  • Valve stem seal
    Patent number: 10508570
    Abstract: A valve stem seal exhibits superior workability of mounting of a reinforcing ring to a valve stem guide and enables the reinforcing ring to be fixed to the valve stem guide in a stable manner. A reinforcing ring is mounted to a valve stem guide by fitting a cylindrical portion to the valve stem guide from a side opposite to an inward flange portion. The cylindrical portion includes a slit extending linearly in a circumferential direction and a locking protrusion that is provided on a side opposite to the inward flange portion with respect to the slit and that is to be locked by a locking recess formed in the valve stem guide. The locking protrusion is constituted by a curved portion that is gradually recessed radially inward from the side opposite to the inward flange portion with respect to the slit to a position that reaches the slit.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: December 17, 2019
    Assignee: NOK CORPORATION
    Inventors: Hiroki Shishido, Tsunehisa Onuma
  • Mechanical seal assembly
    Patent number: 10508739
    Abstract: A mechanical seal assembly has a first flange (10) and a second flange (10). The body of each flange defines a recess adjacent a flange connection face and wherein said recess includes an annular metallic seal surface (28). A metallic seal element (32) is locatable between the first and second flanges. First and second faces of the metallic seal element include an annular seal surface (42). The seal element is configured to be clamped between the two flange bodies (10), to create a metal-to-metal seal between the respective annular seal surface (42) of the seal element and the metallic seal surface (28) of a respective flange body.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: December 17, 2019
    Assignee: EVENORT LTD
    Inventors: Craig McKay, Matthew Smith, Darren Roberts
  • Bearing compartment sealing system with passive cooling
    Patent number: 10502094
    Abstract: The present disclosure relates to sealing systems for bearing compartments. In one embodiment, a sealing system includes a runner configured to extend circumferentially around a rotating component, the runner is formed of a material with low radial thermal growth and is configured to fit to the rotating component to remove heat away from the runner. The runner can include an outer surface configured to provide passive cooling for the runner in the bearing compartment. The sealing system can also include a seal configured to operate with the runner, wherein the seal includes a clearance seal on an air side of the runner. The runner can be configured to operate without direct oil cooling.
    Type: Grant
    Filed: July 20, 2015
    Date of Patent: December 10, 2019
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Nasr A. Shuaib, Jonathan L. Miller, M. Rifat Ullah
  • Rotating labyrinth M-seal
    Patent number: 10502080
    Abstract: Aspects of the disclosure are directed to a seal associated with an engine of an aircraft. The seal includes a plurality of lands, and a barrel coupled to the lands and formed from a plurality of segments, where the segments are coupled to one another such that the barrel is substantially non-linear.
    Type: Grant
    Filed: April 10, 2015
    Date of Patent: December 10, 2019
    Assignee: United Technologies Corporation
    Inventors: David E. Gambardella, Nicholas W. Oren
  • Fluid sealing device and power cable line
    Patent number: 10495238
    Abstract: A fluid sealing device for sealing an opening of an installation pipe in which at least a long object is installed includes: a flange configured to close the opening of the installation pipe, the flange having a hole through which the long object is made to pass, and the flange having a stop face that is continuous with and at an angle to an inner surface of the hole; one or more sealing members configured to be disposed on an outer periphery of the long object and configured to exert an urging force toward an axial center of the long object upon being compressed in an axial direction of the long object, thereby sealing a gap between the flange and the long object; and a clamping member configured to press the one or more sealing members toward the stop face.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: December 3, 2019
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Satoshi Ona, Shoji Mashio, Yasuo Sakaguchi
  • Dynamic seal
    Patent number: 10495227
    Abstract: The present invention provides a dynamic seal for enclosing a radial gap between coaxial, relatively rotatable inner and outer members. The dynamic seal includes an inner seal part, mountable to the inner member; an outer seal part, mountable to the outer member; and a counterface part radially suspended between the inner and outer seal parts and coaxial therewith. Each of the inner and outer seal parts provides a set of first and second sealing elements, which bear against oppositely oriented axial surfaces of the counterface part. The counterface part is thus axially retained in both directions by the inner seal part at a radially inner contact location, and is axially retained in both directions by the outer seal part at a radially outer contact location.
    Type: Grant
    Filed: February 14, 2014
    Date of Patent: December 3, 2019
    Assignee: AKTIEBOLAGET SKF
    Inventors: Gerrit-Jan Dop, Jos Holsnijders
  • Seal device
    Patent number: 10487945
    Abstract: A seal device including a housing enveloping a piston rod, wherein the housing includes at least one ring groove at a cylindrical inside of the housing that is oriented towards the piston rod, wherein a seal ring configured as an annular disc is inserted into the at least one ring groove, wherein the at least one ring groove includes at least two protrusions at opposite side walls, wherein the at least two protrusions press against the seal ring inserted into the at least one ring groove, wherein the at least two protrusions are arranged opposite to each other in a portion of a groove opening oriented towards the piston rod in the at least one ring groove, and wherein the at least two protrusions are configured to dampen lateral movements of the seal ring.
    Type: Grant
    Filed: July 30, 2017
    Date of Patent: November 26, 2019
    Inventor: Steffen Dittmar
  • Sealing device
    Patent number: 10480652
    Abstract: A sealing device comprising an intermediate bushing, which is located between an outer sleeve and an inner member mounted therein so as to be movable relative thereto and which forms a gap seal, is designed in such a way that chambers that can be filled with a pressurized fluid are provided between the intermediate bushing and the adjacent outer sleeve.
    Type: Grant
    Filed: March 2, 2016
    Date of Patent: November 19, 2019
    Assignee: HAMMELMANN GMBH
    Inventors: René Nölle, Martin Oberscheidt, Gerald Schubring
  • Mechanical seal arrangement having a bellows element
    Patent number: 10480658
    Abstract: The invention relates to a mechanical seal arrangement, comprising a rotating slide ring and a stationary slide ring which define a sealing gap therebetween, and a bellows unit with a bellows element and an intermediate disk, wherein the bellows element has a first connection region, a second connection region and a bellows intermediate region, wherein the bellows element is produced from an elastomer material and provides a connection between the rotating slide ring and a rotating component, wherein the intermediate disk is arranged between the bellows element and the rotating slide ring, and wherein an inner peripheral region of the intermediate disk is arranged for support on the rotating component.
    Type: Grant
    Filed: February 12, 2015
    Date of Patent: November 19, 2019
    Assignee: EagleBurgmann Germany GmbH & Co. KG
    Inventors: Dieter Ziegenbein, Wolfgang Ries, Rudolf Schicktanz, Jörg Thelke, Robert Woppowa, Andreas Eiletz, Peter Haselbacher, Elisabeth Brustmann
  • Sealing assembly
    Patent number: 10480339
    Abstract: A sealing assembly includes a first sealing member disposed on a fixed body and a second sealing member disposed on a rotating body while facing the first sealing member, such that when the second sealing member rotates, the first sealing member and the second sealing member work in conjunction with each other to generate flow of fluid in a reverse direction and form a fluid barrier, thereby preventing leakage of the fluid.
    Type: Grant
    Filed: October 21, 2016
    Date of Patent: November 19, 2019
    Assignee: Doosan Heavy Industries Construction Co., Ltd
    Inventor: Kyung Kook Kim
  • Reduction in the leakage flow rate of a brush seal by flexible geometric obstruction
    Patent number: 10458550
    Abstract: A brush seal system, for application as an air/oil seal in a turbomachine shaft bearing, of axis of rotation, with the seal including a layer of carbon bristles, held between a first ring disposed upstream of a flow of air that passes through the seal, and a second ring disposed downstream of the flow of air, with a surface of the layer of bristles, which is turned towards the first ring, including a non-metal flexible element that makes it possible to stop a portion of flow of air that flows through the seal in a direction substantially parallel to the axis of rotation.
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: October 29, 2019
    Assignee: SAFRAN AIRCRAFT ENGINES
    Inventor: Geoffray Deterre
  • Oil slinger with convective cooling of radial surface
    Patent number: 10443732
    Abstract: Oil slinger systems include a seal runner comprising an annular radial member having a radius (R) and an outer axially extending member having an axial length (L) such that a ratio (L/R) is between 0.8 and 1.4, the annular radial member disposed at a first angle with respect to the outer axially extending member, a heat shield in mechanical communication with the seal runner, and a volume bounded by an outer face of the annular radial member and an inner face of the heat shield. Methods of radial convective cooling include pumping a cooling liquid through the oil slinger system and convectively cooling the oil slinger.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: October 15, 2019
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Thomas E. Clark, Eric Charles Mundell, Gary L. Grogg
  • Rib seal on front of dash seal
    Patent number: 10434837
    Abstract: A seal assembly for an air handling system of a motor vehicle comprises a panel having a surface disposed on a first plane, a plurality of spaced apart ribs with an end of each of the ribs disposed on a second plane, and a sealing structure having a first face in facing relationship with the surface of the panel and an opposing second face in facing relationship with the plurality of the spaced apart ribs. The first face includes a first projection projecting therefrom including a first sealing surface spaced apart from the second face of the main body by a first distance and second projection projecting away from the first sealing surface of the first projection and including a second sealing surface spaced apart from the second face of the main body by a second distance greater than the first distance.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: October 8, 2019
    Assignee: HANON SYSTEMS
    Inventor: Jhonatan Ferrer
  • Seal anti-rotation feature
    Patent number: 10436053
    Abstract: A seal assembly includes a seal arc segment defining first and second seal supports. A carriage defines first and second support members with the first support member supporting the seal arc segment in a first ramped interface and the second support member supporting the seal arc segment in a second ramped interface such that the seal arc segment is circumferentially moveable with respect to the carriage. The seal assembly includes an anti-rotation interface in which the seal arc segment and the carriage are engaged. The anti-rotation interface restricts circumferential movement of the seal arc segment.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: October 8, 2019
    Assignee: United Technologies Corporation
    Inventor: Michael G. McCaffrey
  • Valve packing assembly having shape-memory member
    Patent number: 10428950
    Abstract: A packing assembly for a valve includes a first segment having at least one first guiding surface, and a second segment having at least one second guiding surface in engagement with at least a portion of the at least one first guiding surface. A shape-memory member couples the first and second segments. The shape-memory member may be formed of a material that is responsive to changes in temperature, so that, in response to a change in temperature, the shape-memory member may cause relative movement of the first and second segments in a first direction. In response to the movement, the first and second guiding surfaces may cause relative displacement of the first and second segments in a second direction.
    Type: Grant
    Filed: March 23, 2016
    Date of Patent: October 1, 2019
    Assignee: ATOMIC ENERGY OF CANADA LIMITED / ÉNERGIE ATOMIQUE DU CANADA LIMITÉE
    Inventors: Mathew Stevenson, Fabrice Guerout, Rick Boor
  • Sealing device
    Patent number: 10428947
    Abstract: A sealing device includes a metal ring, a main lip, an annular elastic body, a sliding ring, and biasing means. The metal ring is hermetically fixed to a housing. The main lip is bonded to the metal ring and is slidably in close contact with an outer periphery surface of a rotating body inserted through an inner circumference of the housing. The annular elastic body is bonded to the metal ring on an outer side of the main lip, and stretchable in an axial direction. The sliding ring is provided at an end portion of the annular elastic body on a side opposite the metal ring, and is slidably in close contact with a seal flange attached to an outer periphery of the rotating body. The biasing means is configured to elastically press the sliding ring against the seal flange, thereby maintaining stable sealability over an extended period of time.
    Type: Grant
    Filed: November 9, 2015
    Date of Patent: October 1, 2019
    Assignee: NOK Corporation
    Inventor: Takehiro Nakagawa