Patents by Inventor Yoshikazu Tuchiya

Yoshikazu Tuchiya 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: 4376909
    Abstract: An automatic light control for automotive vehicles includes a relay connected to a power source by way of a main switch and an electronic switch, and a control circuit for on-off control of the electronic switch. In the control circuit, a brightness sensor produces a signal representing the ambient brightness which is compared with a predetermined reference signal by comparator means. The electronic switch is turned on or off in response to the difference in output of the comparator means to energize or deenergize the relay to thereby turn the vehicle lights on or off. The control may include two main light control circuits of identical configuration arranged in parallel, each of which serves as a back-up circuit for the other, and a monitor circuit adapted to issue an alarm when the two circuits produce unequal outputs.
    Type: Grant
    Filed: April 9, 1980
    Date of Patent: March 15, 1983
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Katsutoshi Tagami, Yoshikazu Tuchiya