Patents by Inventor Masaharu Miyagawa

Masaharu Miyagawa 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).

  • Geared motor
    Patent number: 6577034
    Abstract: A spline is provided on a hollow shaft, and the key in the spline can couple directly a shaft to be driven of an external apparatus. Screw blocks rotational torque, thus screw is desirably located as far as possible from output shaft. Although the location is not illustrated, an anti-revolving function is desirably provided on the housing surface at the farthest place from the output shaft so that less force is required for fixedly securing the geared motor.
    Type: Grant
    Filed: June 29, 2000
    Date of Patent: June 10, 2003
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hiroshi Kitamura, Keita Nakaguro, Masaharu Miyagawa, Mizuo Komine, Shoichi Kubo, Yukio Chihara
  • Methods for producing a resin-bonded magnet
    Patent number: 4981635
    Abstract: A method for producing a resin-bonded magnet, which includes steps of mixing a magnet element and microcapsules each of which contains at least one component of a thermally polymerizable resin composition as a binder component, mechanically breaking at least a part of the microcapsules during formation of a green compact comprising said resin composition and said magnet element to discharge the components of said resin composition from the capsules, and curing said resin to produce the resin-bonded magnet.
    Type: Grant
    Filed: February 28, 1989
    Date of Patent: January 1, 1991
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Fumitoshi Yamashita, Masami Wada, Masaharu Miyagawa, Hiroshi Dohi