Patents Examined by L. Susmitha Koneru
  • Patent number: 10941863
    Abstract: A sliding component includes a pair of sliding parts of which a rotating-side sliding part rotates in both forward and reverse directions. In the sliding component, at least one of the sliding parts has a sliding face provided with positive pressure generation grooves on the sealed fluid side, and a negative pressure generation groove on the opposite-to-sealed-fluid side and separated from the opposite-to-sealed-fluid side by a land, and a deep groove communicating with the sealed fluid side on the sealed fluid side of the negative pressure generation groove. The positive pressure generation grooves each have an upstream end communicating with the deep groove, and the negative pressure generation groove has an upstream inlet and a downstream outlet that communicate with the deep groove, and an intermediate portion between the inlet and the outlet located on the opposite-to-sealed-fluid side of the inlet and the outlet.
    Type: Grant
    Filed: November 6, 2017
    Date of Patent: March 9, 2021
    Inventors: Yuta Negishi, Sayaka Kosugi, Hideyuki Inoue, Takeshi Hosoe, Yuichiro Tokunaga
  • Patent number: 10935139
    Abstract: A dual-ended brush seal assembly that may be for turbine engine includes a first structure having a first surface and a second structure having a second surface. A brush seal of the assembly includes a bent bristle pack having a first end in sealing contact with the first surface and an opposite second end in sealing contact with the second surface. The first and second ends project in respective first and second directions that generally traverse one-another.
    Type: Grant
    Filed: July 18, 2019
    Date of Patent: March 2, 2021
    Assignee: Raytheon Technologies Corporation
    Inventor: Timothy M. Davis
  • Patent number: 10910810
    Abstract: A gel sealing device includes a gel sealing block (5) which provides a sealing section (22) through which the elongate parts (13, 14) extend. The gel sealing block (5) includes an upper flange (11) and a lower flange (12) with a support section (11a, 12a, 12b) disposed therebetween. The upper and lower flanges (11, 12) sandwiches, in direction of extension of the elongate parts (13, 14), a gel inner ring (7) supported by said support section (2) and a gel outer ring (6, 10a) covering the gel inner ring (7) in a radial direction extending transverse to said extension direction. The gel inner ring (7) and the gel outer ring (6, 10a) are made of a gel sealing material.
    Type: Grant
    Filed: May 17, 2019
    Date of Patent: February 2, 2021
    Inventors: Robert Vanhentenrijk, Ronnie Rosa Georges Liefsoens, Pieter De Coster
  • Patent number: 10900365
    Abstract: An assembly forming a gasket for a turbomachine, includes a brush seal made of a plurality of sealing elastic bristles surrounding a core, a retaining ring including a recess to at least partly accommodate the brush seal, and a bearing cover, placed in contact with the brush seal to hold it in position against the retaining ring, the brush seal being located between the retaining ring and the bearing cover.
    Type: Grant
    Filed: March 16, 2018
    Date of Patent: January 26, 2021
    Assignee: SAFRAN AIRCRAFT ENGINES
    Inventors: Serge Rene Morreale, Francois Jean Comin, Arnaud Jean-Marie Pierrot
  • Patent number: 10876632
    Abstract: An O-ring seal consists of an elastomeric core (1) and a sheathing enclosing the core, said sheathing consisting preferably of two shell-like, thermoplastically coated PTFE films (3, 4). In the overlapping region (3a, 3b, 4a, 4b) of the films, the latter are connected together in a sealing manner, in that the thermoplastic coatings thereof are welded together by the laser transmission welding method. The sheathing is not connected to the elastomeric core (2).
    Type: Grant
    Filed: July 4, 2016
    Date of Patent: December 29, 2020
    Assignee: W. L. Gore & Associates GmbH
    Inventor: Anton Nachtmann
  • Patent number: 10865883
    Abstract: Provided is a sealing device capable of suppressing leakage of a fluid to be sealed while reducing rotary torque regardless of rotational direction. In a sealing ring (100) slides against a side wall surface on a low pressure side of an annular groove, a dynamic pressure generating groove (120) that includes a first groove (121) having a constant width in a radial direction and extending in a circumferential direction and a second groove (122) extending from a center position of the first groove (121) in the circumferential direction to an inner circumferential surface and guiding a fluid to be sealed into the first groove (121) is provided on a sliding surface side which slides against the side wall surface. The first groove (121) is provided at a position within a sliding region in which the sealing ring slides against the side wall surface.
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: December 15, 2020
    Assignees: NOK CORPORATION, EAGLE INDUSTRY CO., LTD.
    Inventors: Masatoshi Seki, Takeshi Hosoe, Hideyuki Inoue, Yuichiro Tokunaga
  • Patent number: 10859164
    Abstract: A double mechanical seal includes a primary stationary seal ring, a primary rotary seal ring, a secondary stationary seal ring and a secondary rotary seal ring. The primary stationary seal ring includes a slide ring and a primary carrier ring, the primary carrier ring having a first axial end with a seat for the slide ring and a second axial end with a rim opposite the first axial end. The secondary stationary seal ring includes a slide ring and a secondary carrier ring, the secondary carrier ring having an inlet recess or opening and an outlet recess or opening for a barrier fluid. The primary carrier ring has a recessed and oblong section or an oblong opening, and the inlet and outlet recesses or openings in the secondary carrier ring are arranged, when in use, in radial flow communication with the recessed and oblong section or the oblong opening.
    Type: Grant
    Filed: May 8, 2017
    Date of Patent: December 8, 2020
    Assignee: SULZER MANAGEMENT AG
    Inventor: Jukka Vainikainen
  • Patent number: 10837556
    Abstract: A packing arrangement for a fluid end of a reciprocating pump is received within a packing box and is arranged to form a seal with a plunger. The packing arrangement includes a plurality of separate annular rings arranged in an abutting relationship with one another within the packing box, and a header ring disposed within the plurality of separate annular rings, the header ring including an inner surface that is non-cylindrical and that is arranged to abut the plunger, a high pressure side that is arranged in a female chevron shape, and a low pressure side opposite the high pressure side. A packing nut is engaged with the fluid end and operable to compress the header ring and the plurality of separate annular rings within the packing box.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: November 17, 2020
    Assignee: FARDNER DENVER PETROLEUM PUMPS LLC
    Inventors: John Chase, Troy E. Wiegand
  • Patent number: 10830265
    Abstract: A gasket includes a gasket body formed of a metal plate and provided with at least two locking hook portions formed to project from the gasket body and abut against side wall surfaces adjacent to a counter sealing surface. The locking hook portions include curved portions at distal end portions of the respective locking hook portions abutting against the side wall surfaces, at least one of the locking hook portions being formed to be bent toward an inside of the gasket body such that an angle made with the gasket body is an acute angle, and press the curved portions against the side wall surfaces by spring force of the locking hook portion bent at the acute angle, allowing the gasket body to hold itself on the counter sealing surface.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: November 10, 2020
    Assignee: NOK CORPORATION
    Inventor: Yasushi Kojima
  • Patent number: 10819064
    Abstract: A gas resistant pothead system and method for electric submersible motors. A gas resistant pothead system includes a lead foil wrapped motor lead cable (MLE) extending through a pothead, a sleeve of an insulator block inside the pothead, the sleeve including gold plating and lead-foil wrapping over the gold plating, and a lead-to-gold seal formed between the gold plating of the sleeve and the lead foil wrapping over the gold plating. A method of creating a seal to gas around a power cable connection to a downhole electric submersible motor includes wrapping lead foil around a MLE extending through a pothead, continuing the lead foil wrapping around a gold-plated sleeve of an insulating block inside the pothead, mechanically reinforcing the lead foil with an encapsulant, and bonding the lead foil to the gold plating of the insulating block.
    Type: Grant
    Filed: April 4, 2019
    Date of Patent: October 27, 2020
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Jeffrey G. Frey, Terry L. Glasscock, Gregory Austin Davis
  • Patent number: 10816117
    Abstract: A self-tightening sealing connector includes a first tubular member, a second tubular member, a first locking member, and a first sealing member. The first tubular member includes a first connecting end and a first flange located at the first connecting end. The second tubular member includes a second connecting end. The second connecting end is configured to be connected with the first connecting end thereby fluid communicating the first tubular member with the second tubular member. The first sealing member is configured to be located between the first locking member and the first flange. In an assembled state, the first locking member and the first flange are capable of applying a force on the first sealing member in an axial direction, and the force can be increased, when an inner fluid pressure is increased.
    Type: Grant
    Filed: January 8, 2018
    Date of Patent: October 27, 2020
    Assignee: NINGBO TIANSHENG SEALING PACKING CO., LTD.
    Inventor: Xing-Gen Li
  • Patent number: 10794493
    Abstract: Embodiments include an apparatus and techniques for operating an electromagnetic cartridge seal. Embodiments include operating a cartridge seal in one of a plurality of modes, and receiving a signal at a force applying mechanism of the cartridge seal, the force applying mechanism being coupled to a primary sealing component of the cartridge seal. Embodiments also include controlling the force applying mechanism based at least in part on the received signal.
    Type: Grant
    Filed: September 18, 2017
    Date of Patent: October 6, 2020
    Assignee: HAMILTON SUNSTRAND CORPORATION
    Inventors: Edward W. Goy, Ryan Shook
  • Patent number: 10767565
    Abstract: A system comprises a pipe defining a fluid passage, the pipe having a first rate of thermal expansion. A housing defines an opening for receiving an end of the pipe for fluid circulation between the fluid passage and an interior of the housing, the housing having a second rate of thermal expansion lesser than the first rate of thermal expansion, at least one annular gap defined between a periphery of the opening and the end of the pipe when the system is below a safety condition threshold temperature. Seal(s) seal the annular gap, wherein the pipe and the housing are configured and the first and second rates of thermal expansion are selected so that, when the system exceeds the safety condition threshold temperature, the end of the pipe contacts the periphery of the opening by thermal expansion to seal the annular gap independent of the at least one seal.
    Type: Grant
    Filed: August 18, 2016
    Date of Patent: September 8, 2020
    Assignee: PRATT & WHITNEY CANADA CORP.
    Inventors: Domenico Di Florio, Eric Hosking
  • Patent number: 10738890
    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: September 5, 2019
    Date of Patent: August 11, 2020
    Assignee: Raytheon Technologies Corporation
    Inventors: Thomas E. Clark, Eric Charles Mundell, Gary L. Grogg
  • Patent number: 10724636
    Abstract: Provided is a combined oil ring that further reduces engine oil consumption. A combined oil ring attached to an oil ring groove of a piston includes: a pair of upper and lower side rails each formed into a flat annular shape, and having a slide contact part that comes into sliding contact with a cylinder; and a spacer expander arranged between the pair of upper and lower side rails. In at least the upper side rail of the pair of upper and lower side rails, a cross-sectional shape of the slide contact part along an axial direction of the piston is a tapered shape linearly spreading from upper to lower parts of the piston; the tapered shape is at an angle of 5 to 30 degrees with respect to a central axis of the spacer expander, and has a vertex of the tapered shape within 0.15 mm from a lower end of the side rail; and a part closer to the lower end than the vertex is formed into a curved shape having a curvature of R0.01 to 0.5.
    Type: Grant
    Filed: July 22, 2015
    Date of Patent: July 28, 2020
    Assignee: NIPPON PISTON RING CO., LTD.
    Inventors: Masataka Kawasaki, Mamoru Miyamoto, Hideshi Hitosugi, Kenji Arai
  • Patent number: 10724640
    Abstract: A labyrinth seal including a stator and a non-contacting rotor, and annular elastomeric seals. The confronting surfaces of the stator and rotor define at least one interface passage, including a radially-outermost annular interface passage between an annular, outermost, radially-extending projection of the stator and an annular rearwardly-extending distal projection of the rotor that overlaps the radially-extending projection of the stator, the radially-outermost annular interface passage tapering outwardly and rearwardly at an acute angle relative to an axial reference line. The annular elastomeric seals are stationary with the stator during dynamic operation of the rotor, and are not contacted by a surface of the rotor during dynamic operation. The interface can also have two radially-disposed exclusion chambers, the outer exclusion chamber being defined in part by a radially-inboard projection of the rotor.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: July 28, 2020
    Assignee: ORION ENGINEERED SEALS, LLC
    Inventors: Randall Jaskot, Woodrow Nepa, Todd Brickson
  • Patent number: 10711780
    Abstract: A hydraulic machine is described having a first part (2) and a second part (3) moveable relative to said first part (3), one of said first part (2) and said second part (3) having a first land (9) resting against the other one of said second part (3) and said first part (2), having a predetermined first height (H1), and being arranged between a high pressure area (7) and a low pressure area (8). Such a machine should have a long working life. To this end a second land (10) having a predetermined second height (H2) smaller than said first height (H1) is located adjacent to said first land (9).
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: July 14, 2020
    Assignee: Danfoss A/S
    Inventors: Stig Kildegaard Andersen, Poul Erik Hansen, Erik Haugaard
  • Patent number: 10704355
    Abstract: A sealing element is flanked by wedge-shaped extrusion ring assemblies. The extrusion rings are continuous for 360 degrees and are slotted from the outside dimension and alternatively from the inside dimension to allow the diameter to increase to the surround tubular or open hole. The extrusion rings climb a ramp on an adjacent pedestal ring on the way out to the borehole wall. Depending on the dimension of the gap to be spanned the extrusion ring slides a variable distance up the pedestal ring ramp. An optional anchor ring is initially forced up an opposite ramp of the pedestal ring. If the sealing gap is short the anchor ring can be eliminated. For larger gaps the anchor ring moves out far enough toward the borehole wall to contact the extrusion ring located on an opposing ramp of the pedestal ring so that reaction forces are directed to keep the anchor ring wedged in position for support of the extrusion ring assembly.
    Type: Grant
    Filed: January 6, 2016
    Date of Patent: July 7, 2020
    Assignee: BAKER HUGHES, A GE COMPANY, LLC
    Inventors: Guijun Deng, Andrew J. Cayson, John K. Wakfield, Carlos A. Prieto, Alexander M. Kendall
  • Patent number: 10704690
    Abstract: A piston ring may have a base with a sliding external surface, an internal surface, an upper surface, and a lower surface, the external surface having chamfered edges. The external surface, the internal surface, the upper surface, the lower surface, and the chamfered edges may have a coating provided with a nitrided first layer having a thickness of up to 2% of a nominal axial thickness of the ring when applied to the upper surface and the lower surface, and a thickness of up to 10% in relation to the thickness of the first layer applied to the upper surface and the lower surfaces when applied to the external surface and to the chamfered edges. The external surface and the chamfered edges may include a sliding layer having one of a hard chromium or ceramic chromium plated coating, the sliding layer being applied on the first layer, the sliding layer having a thickness of between 80 and 175 microns.
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: July 7, 2020
    Assignees: Mahle Metal Leve S/A, Mahle International GmbH
    Inventor: Rafael Antonio Bruno
  • Patent number: 10697546
    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: October 1, 2019
    Date of Patent: June 30, 2020
    Assignee: AKTIEBOLAGET SKF
    Inventors: Gerrit-Jan Dop, Jos Holsnijders