Patents by Inventor Mitsusuke Masaka

Mitsusuke Masaka 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).

  • Diesel engine glow plug with self-temperature saturation characteristic and extended after-glow-time
    Patent number: 5039839
    Abstract: A glow plug for a diesel engine includes a first resistor serving as a heating element, second and third resistors, a sheath which incorporates the first, second, and third resistors, a heat-resistant insulating powder filled in the sheath to insulate the first, second, and third resistors from each other, and a cylindrical housing for holding the sheath. The second and third resistors are connected in series with the first resistor, are made of a material having a positive resistance-temperature coefficient, and have a positive resistance-temperature coefficient larger than that of the first resistor. The heat capacity of a given sheath portion having the third resistor therein is set larger than that of the other sheath portions.
    Type: Grant
    Filed: January 4, 1990
    Date of Patent: August 13, 1991
    Assignee: Jidosha Kiki Co., Ltd.
    Inventors: Mitsusuke Masaka, Koji Hatanaka