Patents by Inventor Kiyoshi Ishimura

Kiyoshi Ishimura 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).

  • Device for swage-forging shafts
    Patent number: 3965716
    Abstract: Device for swage-forging shafts has a lower die set which permits sidewise insertion of the work installed on the bed of a press assembly, and a rotary die set circumferentially equipped with a plurality of upper dies having definite shapes corresponding to each swaging step installed on the ram of said press assembly, said upper dies being arranged to be successively brought into position above the work on said lower die set by rotation of said rotary die set, whereby reciprocation of the ram will swage-forge the work.
    Type: Grant
    Filed: January 22, 1975
    Date of Patent: June 29, 1976
    Assignee: Toyota Jidosha Kogyo Kabushiki Kaisha
    Inventors: Yoshikazu Suzuki, Katsumi Azuma, Kiyoshi Ishimura