Patents Examined by Vishal A Patel
  • Patent number: 12379029
    Abstract: A sealing structure includes a first connector body having a groove, a second connector body encompassing the first connector body, an O-ring partially received in the groove of the first connector body, and a variable back-up ring partially received in the groove of the first connector body and holding the O-ring. The variable back-up ring is deformable in a radial direction depending on a magnitude of a fluid pressure applied between the first connector body and the second connector body.
    Type: Grant
    Filed: December 20, 2023
    Date of Patent: August 5, 2025
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventor: Byung Ryeol Lee
  • Patent number: 12379028
    Abstract: Gaskets and methods for manufacturing a gasket for sealing a gap in a housing, such as a battery housing, which gap extends at least partially around an interior of the housing, said gasket comprising at least one sealing layer. The sealing layer comprises at least two segments which are arranged adjacent to each other in the longitudinal direction of the sealing layer and are joined to each other at a joining region. The two segments have, at the joining region, intermeshing engagement elements joined to each other, and one or both of the segments has/have, at the joining region a positioning hole and a through-opening which are arranged behind the engagement element from the point of view of the respective other segment.
    Type: Grant
    Filed: June 1, 2023
    Date of Patent: August 5, 2025
    Assignee: REINZ-DICHTUNGS-GMBH
    Inventors: Steffen Erthle, Johann Waldvogel
  • Patent number: 12379031
    Abstract: A pair of sliding members sliding relative to each other at sliding faces is configured such that at least one of the sliding faces includes a negative pressure generation mechanism separated from a leakage side by a leakage-side land portion and a land portion arranged in the negative pressure generation mechanism. In the compact sliding members, sliding torque can be reduced and a sealing function can be maintained.
    Type: Grant
    Filed: June 21, 2024
    Date of Patent: August 5, 2025
    Assignee: EAGLE INDUSTRY CO., LTD.
    Inventor: Yuichiro Tokunaga
  • Patent number: 12366293
    Abstract: A mechanical sealing device includes rotating and stationary rings, and rotating and stationary ring adaptors mounted around a rotating shaft. An end surface of the rotating ring adjoins an end surface of the stationary ring by means of springs. The sealing interface includes an adjoining point that is in contact with a liquid medium in an axial section of the device, and an annular peripheral rim surrounding the rotating and stationary rings for agitating the liquid medium. At least a part of the peripheral rim is formed with an inclined surface oriented toward the adjoining point, the inclined surface defining a start point close to the adjoining point and an end point away from the adjoining point in the axial section of the device. The start point is spaced apart from the adjoining point while the end point extends not beyond the adjoining point in the axial direction.
    Type: Grant
    Filed: February 24, 2022
    Date of Patent: July 22, 2025
    Assignee: AIGI ENVIRONMENTAL INC.
    Inventors: Jingwei Zhao, Jun Zhang
  • Patent number: 12359739
    Abstract: An expandable seal for adjoiningly sealing components together includes an elongate body having opposed open ends defining a passage through the body and a flexible outer cover, with the seal being configured for insertion into cavities of adjoined components to seal there between. The body comprises a rigid support configured as a separate component from the flexible cover with the support including an aperture between the open ends, and wherein the open ends comprise a pair of distally opposed support ends with the aperture disposed between the support ends. The cover has a pair of distally opposed cover ends that are engaged with an external portion of respective support ends, with the cover including a central section disposed between the cover ends and over the aperture of the support.
    Type: Grant
    Filed: December 29, 2022
    Date of Patent: July 15, 2025
    Assignee: Humphrey Products Company
    Inventors: Mark Friedman, Matthew Welker
  • Patent number: 12345253
    Abstract: A packing assembly includes a packing sleeve having a first sleeve portion and a second sleeve portion, wherein a first sleeve portion outer diameter is larger than a second sleeve portion outer diameter and a first sleeve portion inner diameter is larger than a second sleeve portion inner diameter. The packing assembly also includes a groove formed in the second sleeve portion outer diameter. The packing assembly further includes a shoulder formed at a transition between the first sleeve portion and the second sleeve portion. The packing assembly includes a shelf formed at the transition between the first sleeve portion and the second sleeve portion. The packing assembly also includes a plurality of packing components arranged within the first sleeve portion inner diameter, at least a portion of the plurality of packing components engaging the shelf. The packing assembly further includes a seal positioned within the groove.
    Type: Grant
    Filed: August 18, 2022
    Date of Patent: July 1, 2025
    Assignee: Vulcan Industrial Holdings, LLC
    Inventors: Chance Ray Mullins, Jason David Smith, Steven Zachary Newberg, Kyle Matthew Ellisor, Aric Martin Gillispie
  • Patent number: 12320428
    Abstract: A sealing device provides consistent sealing performance in applications where a rotating shaft rotates at high speed. The sealing device 10 seals an annular gap between a rotating shaft 50 and a housing 60, and includes a case 100 fixedly attached to the shaft hole, and a seal ring 200 held in the case 100 such as to be restricted from moving in a rotating direction, and to separate a high-pressure side (H) where pressure rises during use of the sealing device from an opposite low-pressure side (L). The seal ring 200 is disposed such that there is an annular gap between itself and an outer circumferential surface of the rotating shaft 50, and the annular gap is dimensioned such that a fluid pressure of a sealed fluid flowing from the high-pressure side (H) into the low-pressure side (L) causes the Lomakin effect.
    Type: Grant
    Filed: August 19, 2021
    Date of Patent: June 3, 2025
    Assignee: EAGLE INDUSTRY CO., LTD.
    Inventors: Tomohiro Uchiyama, Akihiro Takahashi, Yuki Masumi
  • Patent number: 12297909
    Abstract: A shaft seal assembly comprises a stator configured to engage a housing and a rotor positioned within the stator. The stator may include a main body, a stator inward radial projection extending radially inward from the stator main body, and a collection groove adjacent the stator inward radial projection. The rotor may include a rotor main body and a rotor axial projection extending from the rotor main body. The rotor axial projection may be positioned adjacent a distal end of the stator inward radial projection.
    Type: Grant
    Filed: February 22, 2021
    Date of Patent: May 13, 2025
    Assignee: Inpro/Seal LLC
    Inventors: Neil F. Hoehle, Chintan Shah
  • Patent number: 12281707
    Abstract: A pillow block bearing seal for sealing the shaft opening around the shaft of a pillow block, having a stator assembly, a rotor, and a resilient cylinder sleeve. The stator assembly has a cylindrical base having an axial length that is configured to accept the shaft passing there through, and a stator extending annularly from an axial end of the cylindrical base. The rotor is configured to attach to and rotate with a rotatable shaft, and has an axially inward-facing surface that confronts the axially outward-facing surface of the stator to define labyrinth interface passage. The resilient cylindrical sleeve is fixed to an outer surface of the cylindrical base for contact with a pair of annular ribs of the bearing housing, for stabilizing the alignment of the center line of the shaft with the bearing housing.
    Type: Grant
    Filed: June 24, 2022
    Date of Patent: April 22, 2025
    Assignee: ORION ENGINEERED SEALS, LLC
    Inventors: Randall Jaskot, Todd Brickson
  • Patent number: 12276339
    Abstract: An apparatus has: a first member (120); a shaft (40; 50) rotatable relative to the first member about an axis; and a seal system (100). The seal system has a seal carrier (150) having: an axially-extending wall (156) having an inner diameter (ID) surface (160); and a radially-extending wall (154) having a first surface (158). A seal (102) is carried by the first member and has: an outer diameter (OD) surface (206); and a seal face (106). A seat (104) is carried by the shaft and has a seat face (108) in sliding sealing engagement with the seal face. One or more springs (132) bias the seal carrier relative to the first member so as to bias the seal face against the seat face. A key (240; 280; 300; 338) spans an interface between the seal carrier and the seal.
    Type: Grant
    Filed: January 20, 2023
    Date of Patent: April 15, 2025
    Assignee: RTX Corporation
    Inventors: Jacob Peter Mastro, Andrew V. Schwendenmann
  • Patent number: 12269082
    Abstract: A wiping unit for a reciprocating ram includes a subunit including: a ring-shaped wipe member including a lip to press an outer peripheral surface of the ram; and an elastic ring disposed on an outer circumference of the wipe member and configured to press the lip on the outer peripheral surface of the ram. The wipe member is made of rigid resin.
    Type: Grant
    Filed: June 28, 2023
    Date of Patent: April 8, 2025
    Assignee: TOYO SEIKAN CO., LTD.
    Inventors: Tomohito Yokoi, Hiromitsu Funatsuki, Kyouichi Kangawa
  • Patent number: 12258866
    Abstract: The seal assembly can have a support ring having an annular shape defined around a seal axis, and a plurality of strips of a metal material, each strip of the plurality of strips being folded along a length of the strip forming a fold and a pair of segments extending radially inwardly from the fold, relative the seal axis, the fold secured at the support ring, the fold having a bending radius defined around a bending axis, the bending axis oriented parallel to the seal axis, the plurality of strips being arranged circumferentially relative one another, around the seal axis.
    Type: Grant
    Filed: May 29, 2023
    Date of Patent: March 25, 2025
    Assignee: PRATT & WHITNEY CANADA CORP.
    Inventor: Daniel Alecu
  • Patent number: 12247662
    Abstract: A modular stuffing box for a reciprocating pump, and in particular, an externally mounted modular stuffing box. The modular stuffing box includes three or more sections that can be disassembled in individual sections. Being able to disassemble the sections allows for only the damaged section or sections requiring repair or removal to be replaced, thereby eliminating the need to remove or replace all of the sections of the stuffing box. The overall expenses are reduced and the ease of repair in the field is increased, because the materials and sections of the stuffing box that are in good condition and do not require repair can be reused as part of the stuffing box.
    Type: Grant
    Filed: December 15, 2022
    Date of Patent: March 11, 2025
    Assignee: GD ENERGY PRODUCTS, LLC
    Inventor: Adam Bradley Avey
  • Patent number: 12228224
    Abstract: A seal component includes a cylindrical wall, a frustoconical wall extending inwardly from the cylindrical wall, and a seal plate enclosing the frustoconical wall. The seal plate includes a first removable panel and a second removable panel, the second removable panel disposed within an area of the first removable panel. A seal component includes a circumferential ridge circumscribing the second removable panel, the circumferential ridge integrally formed with the seal plate and removably coupled with at least the second removable panel. Additionally, the seal plate includes circumferential grooves and scoring lines that provide a cutting guide to facilitate cutting and removing at least one of the first and second removable panels.
    Type: Grant
    Filed: November 8, 2024
    Date of Patent: February 18, 2025
    Assignee: TWM IP, LLC
    Inventor: Theodore W. Meyers
  • Patent number: 12227364
    Abstract: The present disclosure provides a shaft seal for a screw conveyor. The shaft seal includes a housing that includes an outboard frame plate and an inboard frame plate. The shaft seal also includes an outboard compression plate and an inboard compression plate situated between the outboard frame plate and the inboard frame plate. A least three sealing devices are situated between the outboard compression plate and the inboard compression plate with an annular recess at least partially formed along at least one of the inboard compression plate and the outboard compression plate.
    Type: Grant
    Filed: April 30, 2021
    Date of Patent: February 18, 2025
    Assignee: Bridgestone Corporation
    Inventor: Scott E. Gaston
  • Patent number: 12215788
    Abstract: A seal for sealing a gap between rotatable shaft and a vessel wall includes an adapter plate fixed to the vessel wall. A stator plate is attached to the adapter plate. An interfacing boot rotates with the rotatable shaft and has a lip in sliding contact with the stator plate. A central boot is sealingly engaged with and rotates with the rotatable shaft. A drive ring rotates with and is axially movable with respect to the rotating shaft. An anchor ring is fixable non-rotatably and axially to the rotatable shaft. A bias member urges the anchor ring and the drive ring apart. A compression member compresses the bias member, and upon release the bias member urges the drive ring forwardly from the anchor ring. A sealing method includes steps for assembling the seal.
    Type: Grant
    Filed: September 20, 2023
    Date of Patent: February 4, 2025
    Assignee: CINCHSEAL ASSOCIATES, INC.
    Inventors: Vipul Shriyan, David Verbaro, Saji Pillai
  • Patent number: 12209668
    Abstract: A sliding component having an annular shape is disposed at a relative rotation point of a rotating machine. A plurality of dynamic pressure generation mechanisms are provided on a sliding surface of the sliding component each including a first groove portion communicating with a leak side and a pair of second groove portions and communicating with the first groove portion and extending on both sides in a circumferential direction. Extension-direction end surfaces and of the second groove portions and are disposed on a sealing target fluid side as compared with a communication portions between the first groove portion and each of the second communication portions.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: January 28, 2025
    Assignee: EAGLE INDUSTRY CO., LTD.
    Inventors: Tadatsugu Imura, Hiroshi Suzuki
  • Patent number: 12203553
    Abstract: A wear-resistant and low-friction coated piston ring and a preparation method therefor are provided. The OD surface diamond-like carbon coating consists sequentially of a first metal interlayer, a second metal interlayer, a gradient DLC layer, alternating high/low hardness DLC layers, and an outer running-in DLC layer. The side surface diamond-like carbon coating consists sequentially of a metal interlayer, a gradient DLC layer, and alternating high/low hardness DLC layers. The preparation method employs physical vapor deposition to sequentially deposit composite DLC coatings on the OD surface and side surface of the piston ring. The coating is a tetrahedral amorphous carbon structure, exhibiting good thickness uniformity and fine grain structure. This improves the wear resistance of the piston ring's OD surface and side surface, reduces the aggressiveness of the piston ring side surface against the piston ring groove, and meanwhile avoids adhesion.
    Type: Grant
    Filed: April 1, 2024
    Date of Patent: January 21, 2025
    Assignee: Asimco Shuanghuan Piston Ring (yizheng) Co., Ltd.
    Inventors: Weiwei Shi, Qianxi Liu, Guanfei Shi
  • Patent number: 12203552
    Abstract: The invention relates to an internally clamping rectangular seal (40) for sealing a shaft (20) with respect to a housing (10), wherein the rectangular seal can be inserted into a groove (13) disposed circumferentially on a shaft bore (12), wherein the rectangular seal is interrupted along its circumferential direction at a joint (42) and two ring-end sections (43, 44) are formed, and wherein the rectangular seal has an outer surface (40.4) facing radially outwards, an inner clamping surface (40.1) facing radially inwards and opposing flank surfaces (40.3) facing in the axial direction. Therefore, provision is made that at least one contact ramp (45.1, 45.2, 45.
    Type: Grant
    Filed: March 19, 2020
    Date of Patent: January 21, 2025
    Assignee: Konzelmann GmbH
    Inventors: Matthias Heine, Michail Michailidis, Heino Kramp
  • Patent number: 12203322
    Abstract: An elastic oblong seal has a sealing section with a flexible outer body and a rodent resistant barrier therein. The barrier includes separate metal wires arranged at a distance to each other and extending substantially in parallel to a seal longitudinal direction. The outer body includes a TPE constituting the basic material and form of the seal. The metal wires include at least three separate metal wires each of solid single stranded metal. At least two of the at least three are encompassed by a TPE which is at least one chemically modified PP, selected from the group consisting of: a PP grafted with carboxylic acid, PP grafted with anhydride groups, a PP grafted with epoxides, a PP grafted with silanes, a MAPP, a PP grafted with methacrylic acid, a PP grafted with glycidyl methacrylate, a PP grafted with vinyl trimethoxysilane, and a PP grafted with methacryl trimethoxysilane.
    Type: Grant
    Filed: December 21, 2022
    Date of Patent: January 21, 2025
    Assignee: RODEXIT APS
    Inventor: Bjørn Von Ryberg