Patents by Inventor Tsukashi Oohama

Tsukashi Oohama 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).

  • Outer ring member for constant velocity joint and method of manufacturing the member
    Patent number: 7090729
    Abstract: An outer ring member for a constant velocity joint is manufactured. An intermediate preformed product having a cup section with an incomplete shape is formed by pressing a large diameter section without applying a low temperature annealing treatment and a lubricating chemical conversion coating treatment. Then, applying a low temperature annealing treatment and a lubricating chemical conversion coating treatment to the intermediate preformed product, thereafter a formed product having a cup section provided with ball-rolling grooves is formed by backward extrusion to the intermediate preformed product. Subsequently, the product is ironed before hardening, without applying a low temperature annealing treatment and a lubricating chemical conversion coating treatment to the formed product.
    Type: Grant
    Filed: June 27, 2002
    Date of Patent: August 15, 2006
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Tsukashi Oohama, Naomi Sato, Yoshihisa Doi, Saburo Akimoto, Shigeo Ota
  • Outer ring member for constant velocity joint and method of manufacturing the member
    Publication number: 20030168126
    Abstract: An outer ring member for a constant velocity joint is manufactured. An intermediate preformed product 16 having a cup section 21 with an incomplete shape is formed by pressing a large diameter section 14 without applying a low temperature annealing treatment and a lubricating chemical conversion coating treatment. Then, applying a low temperature annealing treatment and a lubricating chemical conversion coating treatment to the intermediate preformed product 16, thereafter a formed product having a cup section 8 provided with ball-rolling grooves 17a to 17f is formed by backward extrusion to the intermediate preformed product 16. Subsequently, the product is ironed before hardening, without applying a low temperature annealing treatment and a lubricating chemical conversion coating treatment to the formed product.
    Type: Application
    Filed: February 11, 2003
    Publication date: September 11, 2003
    Inventors: Tsukashi Oohama, Naomi Sato, Yoshihisa Doi, Saburo Akimoto, Shigeo Ota