Patents Examined by Gilbert Y Lee
  • Patent number: 11231110
    Abstract: Shaft seal for sealing a shaft against a housing of a motor vehicle, comprising a shaft sealing ring having a sealing lip for sealing the shaft against the housing, characterised in that a labyrinth seal is arranged upstream of the shaft sealing ring on the oil side thereof.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: January 25, 2022
    Inventors: Jan Specht, Sebastian Teuscher, Timo Besoke, Matthias Spitz, Juergen Grundt
  • Patent number: 11221071
    Abstract: Provided is a sliding component with less fluid leakage. A sliding component has a pair of sliding members at least one of which has positive pressure generation mechanisms and negative pressure generation mechanisms formed at a sliding surface of the sliding member. The negative pressure generation mechanisms are arranged on a low-pressure fluid side with respect to the positive pressure generation mechanisms. Adjoining two of the negative pressure generation mechanisms in a circumferential direction overlap with each other in a radial direction.
    Type: Grant
    Filed: September 4, 2018
    Date of Patent: January 11, 2022
    Inventors: Yuki Sasaki, Tetsuzo Okada, Masatoshi Itadani, Takeshi Hosoe
  • Patent number: 11209083
    Abstract: A sealing membrane assembly including a flange having a body with a through passage. A first sealing membrane defines a first flexible panel with a first axial sealed opening extending therethrough. The first axial sealed opening extends at an acute angle. A second sealing membrane defines a second flexible panel with a second axial sealed opening extending therethrough. The second axial sealed opening extends at an obtuse angle. The first and second sealing membranes are secured relative to the flange such that the first and second axial sealed openings crisscross one another and the first and second sealing membranes seal the through passage except through the first and second sealed openings.
    Type: Grant
    Filed: January 16, 2019
    Date of Patent: December 28, 2021
    Assignee: Specified Technologies Inc.
    Inventors: Paul Gandolfo, Michael Joyce
  • Patent number: 11204099
    Abstract: A seal that enables an enclosure to be sealed and to keep an air pressure balance between an internal space within the enclosure and an external space outside the enclosure in such a way that water ingress into the enclosure is hindered in a predictable manner. This is accomplished by providing a seal having at least one small diameter tube with at least an inner surface being hydrophobic, oleophobic or omniphobic. The seal is mounted in the enclosure between the inner and outer space. To further avoid small particle contaminants to enter and go through the at least one small diameter tube, it is preferable to have a small diameter tube with curves and bends, and it will still allow an airflow through it if there is an air pressure imbalance.
    Type: Grant
    Filed: July 17, 2019
    Date of Patent: December 21, 2021
    Assignee: Aktiebolaget SKF
    Inventor: Warrick Allen
  • Patent number: 11199262
    Abstract: A segment seal is configured to seal an annular clearance between a housing and a rotary shaft in a state in which a pair of seal rings are attached in an unrotatable state between one end portion of the housing and a support member attached to the housing so as to be opposite to the one end portion in an axial direction. The segment seal includes an anti-rotation member placed not to rotate relative to the housing or the support member, provided with a pair of raised portions fitted to the pair of seal rings to prevent rotation of the pair of seal rings, and configured such that at least one of the raised portions has a shape fittable only to either one of the seal rings.
    Type: Grant
    Filed: August 2, 2018
    Date of Patent: December 14, 2021
    Inventors: Yasuhiro Kuroki, Toru Kono, Akira Urabe
  • Patent number: 11193593
    Abstract: A hydrostatic seal assembly includes a primary seal configured to maintain a selected gap between the primary seal and a rotating component. The primary seal includes a seal support, a seal shoe, and one or more seal beams operably connecting the seal support to the seal shoe. The one or more seal beams are configured as spring elements integral with the seal shoe to allow radial movement of the seal shoe relative to the seal support. A seal carrier including a radial outer wall is configured to radially position the primary seal. The seal carrier is configured for a non-contact relationship with the seal shoe during operation of the hydrostatic seal assembly.
    Type: Grant
    Filed: September 3, 2019
    Date of Patent: December 7, 2021
    Inventor: Conway Chuong
  • Patent number: 11193587
    Abstract: Piston ring having an endless base ring and sealing ring have a radially outwardly directed base ring face side. The sealing ring has a radially inwardly directed, circularly running sealing ring inner side with three tangential cuts separating three sealing ring segments are arranged in a circumferential direction (U). The base and sealing rings are arranged in succession in a longitudinal direction (L). A top ring is arranged to adjoin the sealing ring having a top ring has a radially outwardly directed top ring outer side and a radially inwardly directed top ring inner side. The top ring has, on the side opposite the sealing ring, a radially running return flow channel extending radially, the sealing face side protrudes in a radial direction beyond the top ring outer side and the base ring face side. The base and the top rings have a greater tensile strength than the sealing ring.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: December 7, 2021
    Inventor: Norbert Feistel
  • Patent number: 11192400
    Abstract: Sealing device for a wheel hub unit is disclosed herein, wherein the sealing device being able, during use, to form a static seal for protecting the wheel hub unit from any environmental pollutant and being provided with a screen, which is engaged with a collar of the wheel hub unit and has a bottom wall, a cylindrical side wall integral with and more or less perpendicular to the bottom wall. The sealing device is designed and structured to protect the wheel hub unit from any environmental contaminant that the wheel hub unit may be exposed to during usage.
    Type: Grant
    Filed: October 15, 2019
    Date of Patent: December 7, 2021
    Inventors: Daniele Duch, Antonia Nastasi, Laura Sguotti
  • Patent number: 11193590
    Abstract: Systems and methods are presented for sealing a higher pressure fluid cavity from a lower pressure fluid cavity in a rotating machine. The cavities are at least partially disposed between a rotatable shaft and a housing. The seal assembly comprises a runner mounting assembly, a circumferential ceramic runner, a carbon seal ring, and an annular seal member. The carbon seal ring is sealing engaged with the housing and at least a portion of the runner to thereby form a boundary between the higher pressure fluid cavity and the lower pressure fluid cavity. The annular seal member is coupled to the housing axially displaced from the seal ring in the lower pressure fluid cavity. The seal member has a curvilinear face surface that engages the runner.
    Type: Grant
    Filed: November 27, 2019
    Date of Patent: December 7, 2021
    Assignee: Rolls-Royce Corporation
    Inventor: Joseph Dean Black
  • Patent number: 11193040
    Abstract: A coating agent for a rubber-coated cylinder head gasket contains a lubricant and a urethane resin. The lubricant is unsintered polytetrafluoroethylene resin particles having an average primary particle size of 1 ?m or less. The amount of the unsintered polytetrafluoroethylene resin particles in a solid content is 30 to 80% by volume. The present invention provides a coating agent for a rubber-coated cylinder head gasket that can form a coat that is highly wear-resistant under high contact pressure and high temperature conditions and with which a rubber layer is less likely to stick to the seal face of the cylinder block or the cylinder head after the use under high contact pressure and high temperature conditions, and a cylinder head gasket obtained using the coating agent.
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: December 7, 2021
    Inventors: Tomokazu Watanabe, Nahoko Kitajima, Hideaki Mori, You Nakajima
  • Patent number: 11187093
    Abstract: A face seal assembly including a thermal fluid circuit, a turbomachine including the face seal assembly and a method of operating the turbomachine are disclosed. The face seal assembly includes a seal ring including a seal bearing face, at least one internal cavity including a cavity inlet and a cavity outlet. The face seal assembly further including a fluid inlet channel in fluid communication with the cavity inlet of the at least one internal cavity and a pressurized fluid and a fluid outlet port in fluid communication with the cavity outlet of the at least one internal cavity. The at least one internal cavity, the fluid inlet channel and the fluid outlet port define a thermal fluid circuit providing thermal management of the seal ring. In the turbomachine, the face seal assembly is disposed between a stationary component and a rotating component including a rotating component bearing face.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: November 30, 2021
    Inventors: Deepak Trivedi, Uttara Vijay Kumar, Rahul Anil Bidkar
  • Patent number: 11174948
    Abstract: An assembly is provided that includes a slider seal having a washer and a tubular puck. The washer includes an inner washer surface and an outer washer surface. The inner washer surface extends around an axis of the slider seal and has a non-circular cross-sectional geometry. The inner washer surface forms a washer bore axially through the washer. The outer washer surface extends around the axis and has a cross-sectional geometry with a shape that is different than a shape of the non-circular cross-sectional geometry. The tubular puck projects axially through the washer bore and includes an outer puck surface. The outer puck surface extends around the axis. The outer puck surface is sealingly engaged with and configured to slide axially along the inner washer surface.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: November 16, 2021
    Assignee: Raytheon Technologies Corporation
    Inventors: David Kwoka, Jeffery A. Lovett
  • Patent number: 11174942
    Abstract: A sealing ring for a header of an implantable device has an outer ring and an inner ring. The outer ring is formed with, or of, a high-performance thermoplastic material. The inner ring is formed with, or of, liquid silicone or polyurethane. The inner and outer rings are arranged with a form-fit relative to each other. There is also described a method for manufacturing such a sealing ring and also a contact socket and an implantable device with such a sealing ring.
    Type: Grant
    Filed: September 12, 2019
    Date of Patent: November 16, 2021
    Assignee: BIOTRONIK SE & Co. KG
    Inventors: Kathy Hartmann-Bax, Stefan Lehmann
  • Patent number: 11174943
    Abstract: A seal structure includes a ring-shaped seal member. The seal member is disposed in a seal groove. The case includes a low-pressure lateral face in a cross section of the seal structure, the cross section being taken along an imaginary plane in parallel with a shaft axial direction of the shaft and passing through a center line of the shaft. The seal member includes a first protruding portion. The first protruding portion protrudes from a main portion having a bottom face in contact with the low-pressure lateral face, and has a shape such that the first protruding portion extends toward the shaft as the first protruding portion extends toward the low-pressure side. The first protruding portion includes a tip. The first protruding portion includes a contact region in contact with the shaft. The tip is closer to the low-pressure side than the contact region is.
    Type: Grant
    Filed: May 11, 2017
    Date of Patent: November 16, 2021
    Assignee: VALQUA, LTD.
    Inventors: Takahiro Yamamoto, Chao Jing, Mitsuru Minami, Akira Ueda, Yuki Noriduki
  • Patent number: 11168792
    Abstract: A sealing arrangement for sealing a gap between a machine element and a housing includes: at least one sealing element; and an insulation which electrically insulates the at least one sealing element from the machine element and the housing. The at least one sealing element is at least partially electrically conductive.
    Type: Grant
    Filed: August 13, 2018
    Date of Patent: November 9, 2021
    Inventors: Olaf Nahrwold, Stefan Sindlinger, Boris Traber, Sascha Moeller
  • Patent number: 11168794
    Abstract: One or more techniques and/or systems are disclosed for mitigating fluid loss or leakage from a fluid pump with a rotating shaft driving a pumping mechanism. A packing gland component can have an internal seal formed by two dynamic O-rings that allows for use of lubricants at high pressures, as well as an outer seal for greater prevention of fluid loss. Further, the packing gland component can be a retrofit for existing packing gland components to provide for greater life and efficiency as compared to the existing packing gland components. Additionally, in some implementations, a sleeve may be fixedly attached to the rotating shaft between the packing gland and the shaft to provide a wear point for the packing gland.
    Type: Grant
    Filed: June 18, 2019
    Date of Patent: November 9, 2021
    Assignee: Viking Pump, Inc.
    Inventors: Christopher Mihm, John Hall, Andrew Anderson, Michael R. Crawford
  • Patent number: 11168793
    Abstract: In an exemplary embodiment, a pair of sliding components has sliding surfaces that slide with respect to each other, wherein at least the sliding surface S on one side includes a random dimple group 11 in which plural dimples 10 are randomly arranged, and at least one land portion 15 that partitions radial portions 11a, 11b of the random dimple group 11. According to the configurations, a lubricating effect and a sealing effect can be improved.
    Type: Grant
    Filed: May 12, 2018
    Date of Patent: November 9, 2021
    Assignee: EAGLE INDUSTRY CO., LTD.
    Inventors: Ayano Tanishima, Tadatsugu Imura, Hideyuki Inoue, Yuichiro Tokunaga, Takeshi Hosoe, Yuta Negishi, Yuki Maetani
  • Patent number: 11162590
    Abstract: A sealing ring, in particular a radial shaft sealing ring or a rod sealing ring, can be used for sealing a sealing gap which is arranged between two machine elements. The sealing ring comprises an elastically deformable polymer material and a supporting ring which is embedded in a positively locking manner in the polymer material at least in sections. The supporting ring is configured as a 3D-printed part with a multiple-layer construction of its material at least in sections. The material of the supporting ring has a greater modulus than the polymer material. The supporting ring can be widened elastically in a radial direction with respect to the center axis of the sealing ring, and has dimensionally stable first ring segments which are connected to one another in an articulated manner in the circumferential direction of the sealing ring.
    Type: Grant
    Filed: November 5, 2019
    Date of Patent: November 2, 2021
    Assignee: Trelleborg Sealing Solutions Germany GmbH
    Inventors: Monica Crudu, Martin Franz, Gianella Attard, Matthias Keck, Christoph Wehmann
  • Patent number: 11149852
    Abstract: Securing a channel section 7 onto a pre-existing substrate 9 using screws 11 requires any water-impermeable layer on the substrate 9 to be compromised. In particular, water present on a head of a screw 11 may wick (i.e. via capillary action) along the thread of a screw, past the water-impermeable layer, and into the core of the substrate 9. The present invention provides a sealing device with a fluid inlet 6 for injecting fluid sealant therethrough to surround a screw 11, thereby preventing wicking of water along threads of the screw.
    Type: Grant
    Filed: May 13, 2019
    Date of Patent: October 19, 2021
    Assignee: Pure Vista Ltd.
    Inventor: Angus Noble
  • Patent number: 11149851
    Abstract: A wear resistant coated piston ring for an engine is provided. The piston ring includes a coating disposed on a ring body. The coating includes initially includes alternating first and second layers, wherein the first layers include trivalent chromium, and the second layers include nickel and phosphorous. The first layers are applied by depositing a trivalent chromium electrolyte, specifically Cr3+ electrolyte. The second layers are applied by electroless deposition. The coating is left in the as-is condition and is not heat treated before being disposed on a piston and then in an engine. The coating is naturally exposed to heat while the engine is running, and this heat causes the chromium, nickel, and phosphorous of the layers to diffuse and form a surface layer on a compound layer. The surface layer includes trivalent chromium, and the compound layer includes a ternary compound of chromium, nickel, and phosphorous.
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: October 19, 2021
    Assignee: Tenneco Inc.
    Inventor: James Robert Toth