Patents by Inventor Masutarou Katsu

Masutarou Katsu 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).

  • Stepping motor and manufacturing method thereof
    Patent number: 5121017
    Abstract: A method of manufacturing a stator member for a stepping motor of the present invention comprises the steps of: placing a coil member on a mold; placing a yoke member on a mold with its teeth portions being inserted into a cylindrical hollow portion of the coil member from its one end, one surface of each of the teeth portions facing the mold being in contact with a surface of the mold; pressing the yoke member toward the coil member in a direction along the central shaft portion of the coil member so that a base plate portion of the yoke member may be brought into contact with a flange portion of the coil member; and providing hardenable material in a space enclosed by the surface of the mold and surfaces of the coil member and the yoke member, to thereby integrally uniting the coil member and the yoke member into one stator member.
    Type: Grant
    Filed: April 29, 1991
    Date of Patent: June 9, 1992
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Takashi Yamamoto, Eiki Narimoto, Masutarou Katsu, Tetsuo Matsubara