Patents by Inventor Yutaka Kubota

Yutaka Kubota 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).

  • Control circuit for a glow plug assembly serving as an engine preheating means
    Patent number: 4350876
    Abstract: A control circuit for a glow plug assembly serving as an engine preheating apparatus is designed so as to effect a temperature control in conformity with the specified position established by selective operation of a key switch having three switching positions, i.e., OFF, ON and START positions. The control circuit comprises a first switch connected between the glow plug assembly and a power source, and a series circuit comprising a second switch connected parallel with the first switch and a resistor.
    Type: Grant
    Filed: March 2, 1981
    Date of Patent: September 21, 1982
    Assignee: Diesel Kiki Kabushiki Kaisha
    Inventors: Yutaka Kubota, Hitoshi Sugimoto