Patents by Inventor Takahumi Ichikawa

Takahumi Ichikawa 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).

  • Slidable contact assembly
    Patent number: 4547636
    Abstract: In a slip ring suitable for appliance to a steering system of a vehicle a plurality of contacts arranged axially have spacers among them and flexible contacts are in elastic contact with the respective plurality of contacts. Accordingly, the flexible contacts are relatively rotated to the plurality of contacts at a time of the rotation of a steering wheel of the vehicle while the plurality of contacts and the flexible contacts are kept in a conductive condition therebetween, so that many switches can be mounted on the steering wheel.
    Type: Grant
    Filed: August 30, 1983
    Date of Patent: October 15, 1985
    Assignee: Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho
    Inventors: Shigeo Mizuno, Kazuhisa Kubota, Takahumi Ichikawa