Metal Patents (Class 277/653)
  • Patent number: 6161842
    Abstract: A metal gasket is formed of first, second and third metal plates laminated together. The first metal plate has a first hole, and the second metal plate is situated above the first metal plate and has a second hole. The second hole is greater than the first hole and has a second edge located above the first metal plate. A first bead is formed in at least one of the first and second metal plates to surround the first and second holes. The third metal plate includes a base portion situated above the second metal plate, a curved portion extending from the base portion and situated inside the first and second holes, and a flange extending from the curved portion and situated under the first metal plate. The flange has a third edge located between the first and second edges, so that high surface pressure areas are formed above the flange and the first bead with a low surface pressure area therebetween, by which the gasket can be securely sealed.
    Type: Grant
    Filed: April 27, 1999
    Date of Patent: December 19, 2000
    Assignee: Ishikawa Gasket Co., Ltd.
    Inventor: Yoshio Miyaoh
  • Patent number: 6073937
    Abstract: A composite top plate and methods for manufacturing same are described. The top plate includes a metal insert and a non-metallic member. The metal includes a central portion and a flange portion having cut outs to provide an intermittent surface. The non-metallic member is formed on the metal insert and a portion of the non-metallic material is received in the cutouts to thereafter hold the metal fixed relative to the non-metallic member.
    Type: Grant
    Filed: December 3, 1997
    Date of Patent: June 13, 2000
    Assignee: Caterpillar Inc.
    Inventors: Samuel B. Stevens, Jack N. Seibel
  • Patent number: 5934687
    Abstract: A gas-path leakage seal for generally sealing a gas-path leakage-gap between spaced-apart first and second members of a turbine (such as combustor casing segments of a gas turbine). The seal includes a flexible and generally imperforate metal sheet assemblage having opposing first and second surfaces and two opposing raised edges extending a generally identical distance above and below the surfaces. A first cloth layer assemblage has a thickness generally equal to the previously-defined identical distance and is superimposed on the first surface between the raised edges. A second cloth layer assemblage is generally identical to the first cloth layer assemblage and is superimposed on the second surface between the raised edges.
    Type: Grant
    Filed: July 7, 1997
    Date of Patent: August 10, 1999
    Assignee: General Electric Company
    Inventors: Bharat Sampathkumaran Bagepalli, Mahmut Faruk Aksit, Thomas Raymond Farrell
  • Patent number: 5902956
    Abstract: An electromagnetic interference (EMI) shielding gasket. The gasket is formed as having a resilient core member of an indefinite length which is sheathed in an electrically conductive fiber mesh member. A thermoplastic member is incorporated within the fiber mesh member for consolidating at least a portion of the fiber mesh member. The consolidation is effective to maintain the integrity of the fiber mesh member at an end of the gasket when the gasket is terminated to a determinable length.
    Type: Grant
    Filed: August 2, 1996
    Date of Patent: May 11, 1999
    Assignee: Parker-Hannifin Corporation
    Inventors: George H. Spies, Richard A. Hamel, Jonathon E. Mitchell, William Lionetta, James A. Bradley
  • Patent number: 5889229
    Abstract: A knitted metalized yarn gasket fashioned from a core, a first tubular layer formed from a hot melt yarn around the core, and a second tubular structure knitted from a conductive yarn and disposed over at least a portion of the first tubular layer and core assembly. The hot melt yarn forming the first tubular layer adheres the second tubular structure to the core such that fraying of the knit gasket is substantially prevented.
    Type: Grant
    Filed: March 18, 1997
    Date of Patent: March 30, 1999
    Assignee: Instrument Specialties Co., Inc.
    Inventor: Anthony Michael Sosnowski
  • Patent number: 5804762
    Abstract: An electromagnetic interference (EMI) shielding gasket for mounting on a substrate having a surface. The gasket is formed of a resilient, elongate core member extending along a central longitudinal axis and having an outer circumferential surface defininga cross-sectional profile, and an electrically-conductive outer member having an inner and an outer surface and extending from a first distal end to a sheathing portion. The sheathing portion of the outer member covers a portion of the circumferential surface of the core member and extends from a first proximal end to a second proximal end. The first distal end of the outer member and the first proximal end of the sheathing portion thereof define a first inner shear surface therebetween which is attachable to the substrate. The uncovered portion of the circumferential surface of the core member defines an interface surface for disposition on the surface of the substrate.
    Type: Grant
    Filed: September 27, 1996
    Date of Patent: September 8, 1998
    Assignee: Parker-Hannifin Corporation
    Inventors: Peter M. Jones, Joseph C. Houle
  • Patent number: 5797604
    Abstract: A metal gasket excellent in sealing performance and capable of sealing with a small pressing force. The metal gasket comprises at least one metal sheath with a C-shaped cross-section and a ring elastic core surrounded by the metal sheath. The metal gasket provides a seal upon exertion of a force in the axis center direction. The metal sheath has a locally thin cross-section over the whole annular length, and when the metal sheath subject to a force and deformed, the deflection in the axis direction of the metal sheath due to concentrated stress on the thin worked portion causes the formation projections at both sides of the deflection which projections are pressed onto the sealing face to form air-tight seals.
    Type: Grant
    Filed: December 16, 1996
    Date of Patent: August 25, 1998
    Assignee: CKD Corporation
    Inventors: Toshiyasu Inagaki, Yoshinori Morooka, Akihiro Kojima