Patents by Inventor Yoshikazu Ono

Yoshikazu Ono 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).

  • Method of making a rotor for electronic wristwatch step motor
    Patent number: 4067101
    Abstract: A high performance rotor for an electronic wristwatch step motor and method of forming same is provided. A rotor pinion has a high performance permanent magnet rotor mounted thereto. The permanent magnet rotor includes a brittle permanent magnet core, and a reinforcing plate, the combination of the permanent magnet core and reinforcing plate allowing the high performance magnetic rotor to be interference fit upon the rotor pinion to effect an improved rotor construction.
    Type: Grant
    Filed: November 24, 1975
    Date of Patent: January 10, 1978
    Assignee: Kabushiki Kaisha Suwa Seikosha
    Inventor: Yoshikazu Ono
  • Rotor for electronic wristwatch step motor
    Patent number: 3943698
    Abstract: A high performance rotor for an electronic wristwatch step motor and method of forming same is provided. A rotor pinion has a high performance permanent magnet rotor mounted thereto. The permanent magnet rotor includes a brittle permanent magnet core, and a reinforcing plate, the combination of the permanent magnet core and reinforcing plate allowing the high performance magnetic rotor to be interference fit upon the rotor pinion to effect an improved rotor construction.
    Type: Grant
    Filed: December 9, 1974
    Date of Patent: March 16, 1976
    Assignee: Kabushiki Kaisha Suwa Seikosha
    Inventor: Yoshikazu Ono