Patents by Inventor Toshirou Shimodaira

Toshirou Shimodaira 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).

  • Lamp circuit for automobile
    Patent number: 4477747
    Abstract: A flashing lamp circuit, having a first transistor in circuit with a lamp and power supply, provides intermittent flashing by intermittently turning the transistor on and off in response to an on-off input signal. The transistor is protected against surge currents when the lamp short-circuits by monitoring the lamp voltage and turning the first transistor off when the lamp voltage drops below a predetermined amount for a given period during which the on-off signal is on.
    Type: Grant
    Filed: September 27, 1982
    Date of Patent: October 16, 1984
    Assignee: Kabushiki Kaisha Sankyo Seiki Seisakusho
    Inventors: Kiyoshi Wakai, Toshirou Shimodaira, Yoneharu Fukushima