Patents by Inventor Masaru Itami

Masaru Itami 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).

  • Patent number: 4449831
    Abstract: A pendulum arrangement for a clock movement in which such arrangement has a pendulum arm being mounted to swing freely at a pendulum arm supporting means which is installed on a clock movement housing, and said pendulum arm supporting means consists of a pendulum arm supporter which is pivotally held with free rotation on the clock movement housing so that the pendulum arm supporter can rotate and adjust its supporting position in accordance with the swinging state of the pendulum arm in the inclination of the clock movement.
    Type: Grant
    Filed: July 28, 1982
    Date of Patent: May 22, 1984
    Assignee: Rhythm Watch Co., Ltd.
    Inventors: Masaru Itami, Kunio Tatusawa
  • Patent number: 4378166
    Abstract: In a pendulum arrangement of a pendulum clock having a pendulum arm hanging a pendulum disc on one end and being pivotally and swingingly supported at a supporting portion of a base plate, an electromagnet fixed to the base plate and a permanent magnet arranged facingly to the electromagnet and swinging together with the pendulum arm for the purpose of swinging a pendulum by means of electromagnet force of the electromagnet and the permanent magnet, a pendulum arrangement further comprising a slip arm one end of which the permanent magnet is fixed and on the other end of which is loosely engaged with the pendulum arm at a little larger slipping torque than a driving torque which said permanent magnet receives from the electromagnet, and a pair of limit pins fixed on the both side of the swinging region of the slip arm on the base plate, wherein either one of the limit pins touches the slip arm to slip the slip arm away from the pendulum arm and the permanent magnet always swings so that it can center the elec
    Type: Grant
    Filed: March 26, 1982
    Date of Patent: March 29, 1983
    Assignee: Rhythm Watch Company, Ltd.
    Inventors: Masaru Itami, Yasue Ashibe