Patents by Inventor Koichi Tsukutani

Koichi Tsukutani 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: 4057698
    Abstract: A switching mechanism for a timepiece comprising a base plate having first and second bores extending therethrough and intersecting, a circuit board having a surface opposite the second bore and having stationary contacts mounted on the surface opposite the second bore, and a contact member disposed within the second bore and dimensioned to slide therein. The contact member has a transverse bore extending therethrough and alignable with the first bore through the base plate, and the contact member has a conductive lower end portion extending from the base plate and terminating at a contact surface for contacting to electrically connect the stationary contacts on the circuit board. A spring biases the contact member downwardly to a lowered position with the contact surface contacting the stationary contacts on the surface board.
    Type: Grant
    Filed: April 7, 1976
    Date of Patent: November 8, 1977
    Assignee: Kabushiki Kaisha Daini Seikosha
    Inventors: Yasuichi Nakagawa, Masataka Ikenishi, Yoshio Hozumi, Shozo Kushida, Koichi Tsukutani