Patents by Inventor Shuyou Tsuchiya

Shuyou Tsuchiya 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).

  • Ball bearing
    Patent number: 4343521
    Abstract: In a ball bearing including an outer race, an inner race and ball-like rolling members interposed between the two races, the orbit grooves of the two races are non-circular and the orbit groove coefficient F.sub.1 of the outer race is smaller than the orbit groove coefficient F.sub.2 of the inner race.
    Type: Grant
    Filed: July 21, 1980
    Date of Patent: August 10, 1982
    Assignee: Nippon Seiko Kabushiki Kaisha
    Inventors: Yukihiro Akabane, Hisashi Satoh, Yukio Shiraiwa, Shuyou Tsuchiya
  • Ball bearing
    Patent number: 4334721
    Abstract: In a ball bearing including an outer race, an inner race and ball-like rolling members interposed between the two races, the outer race has a single arcuate orbit groove and when the orbit groove coefficient of the inner race is expressed as ##EQU1## where .rho..sub.0 is the curvature radius of the groove bottom of the orbit groove of the inner race, .rho..sub.1 is the curvature radius of the groove edge of said orbit groove and D is the diameter of the rolling members,10.ltoreq.F.ltoreq.70.
    Type: Grant
    Filed: July 21, 1980
    Date of Patent: June 15, 1982
    Assignee: Nippon Seiko Kabushiki Kaisha
    Inventors: Hisashi Satoh, Yukihiro Akabane, Yukio Shiraiwa, Shuyou Tsuchiya