Patents by Inventor Shingo Hoshikawa

Shingo Hoshikawa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Composite gasket
    Patent number: 5992857
    Abstract: The composite gasket of the present invention has improved various properties which are different depending on use conditions, while ensuring sealing properties, by combining a seal material which is selected in accordance with the properties of certain sheet-like seal materials in a substrate. The composite gasket is configured by forming a plurality of slits in a surface of the sheet-like seal materials the slits extending in a thickness direction of the materials, and loading a seal material composed of a substance which is different from a material constituting the sheet-like seal material into the slits and the surface of the seal material.
    Type: Grant
    Filed: March 21, 1997
    Date of Patent: November 30, 1999
    Assignee: Nippon Pillar Packing Co., Ltd.
    Inventors: Takahisa Ueda, Masahiko Takaoka, Takeshi Miyoshi, Shingo Hoshikawa
  • Vortex gasket for automotive exhaust system
    Patent number: 5454604
    Abstract: A vortex gasket for automotive exhaust system, preferably used with a special flange having a conical seal surface, is formed by spirally overlaying a metal hoop (2) of flat strip, and an inorganic filler (3) of tape form, and annularly spot welding a winding start portion (2a) and a winding end portion (2b) of the hoop (2) to itself. The tape form of the inorganic filler is wider than the flat strip of the metal hoop so that edges of the inorganic filler form seal contact surfaces spaced beyond edges of the metal hoop. When an external force is applied in the axial direction, slipping occurs between the hoop (2) and the filler (3), and the gasket is telescopically deformed in the axial direction, so that the seal contact surfaces 1a, 1b, at sides of the gasket, are formed in a conical shape.
    Type: Grant
    Filed: November 21, 1994
    Date of Patent: October 3, 1995
    Assignees: Toyoda Jidosha Kabushiki Kaisha, Nippon Pillar Packing Co., Ltd.
    Inventors: Hideo Yahagi, Masahiko Takaoka, Shingo Hoshikawa, Takeshi Miyoshi, Keiji Okada
  • Vortex gasket for automative exhaust system
    Patent number: 5411274
    Abstract: A vortex gasket for automotive exhaust system, preferably used with a special flange having a conical seal surface, is formed by spirally overlaying a metal hoop (2) of flat strip, and an inorganic filler (3) of tape form, and annularly spot welding a winding start portion (2a) and a winding end portion (2b) of the hoop (2) to itself. The tape form of the inorganic filler is wider than the flat strip of the metal hoop so that edges of the inorganic filler form seal contact surfaces spaced beyond edges of the metal hoop. When an external force is applied in the axial direction, slipping occurs between the hoop (2) and the filler (3), and the gasket is telescopically deformed in the axial direction, so that the seal contact surfaces 1a, 1b, at sides of the gasket, are formed in a conical shape.
    Type: Grant
    Filed: May 13, 1993
    Date of Patent: May 2, 1995
    Assignees: Toyota Jidosha Kabushiki Kaisha, Nippon Pillar Packing Co., Ltd.
    Inventors: Hideo Yahagi, Masahiko Takaoka, Shingo Hoshikawa, Takeshi Miyoshi, Keiji Okada