Patents by Inventor Yoku Tsuruya

Yoku Tsuruya 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 for manufacturing a stator of a stepping motor
    Patent number: 5526560
    Abstract: A method for manufacturing a stator of a stepping motor comprises the steps of carrying out a half-pierce and push-back process to a frame plate to make an area in which comb teeth are to be formed and an area to be blanked out readily separable, carrying out a blanking process to separate the blanked out area from the comb teeth, and bending the comb teeth to a predetermined angle and collapsing the comb teeth to make the thicknesses of the comb teeth uniform. The comb teeth are then bent at right angles to an outer periphery of the frame plate.
    Type: Grant
    Filed: March 1, 1994
    Date of Patent: June 18, 1996
    Assignees: Canon Seiki Kabushiki Kaisha, Canon Kabushiki Kaisha
    Inventor: Yoku Tsuruya