Patents by Inventor Keiichi Niwaya

Keiichi Niwaya 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).

  • Tripod type slave unit
    Patent number: 4582410
    Abstract: A tripod type slave unit comprises a shoe type mount for carrying detachably a mounting leg for strobo device and the like on a portion of a tripod device detachable to an accessory mount of a camera, a control terminal connected to a switching terminal for strobo device and the like carried on the shoe type mount, and a switching circuit connected between both terminals of said control terminal to shortcircuit both the terminals temporarily by means of a photosensor for detecting a leading edge of a flash of a main light source.
    Type: Grant
    Filed: May 30, 1985
    Date of Patent: April 15, 1986
    Inventors: Keiichi Niwaya, Asanuma Camera Mechanical Laboratory