Patents by Inventor Umetaro Nishizuka

Umetaro Nishizuka 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).

  • Erroneous cutting prevention scissors
    Patent number: 5440812
    Abstract: Erroneous cutting prevention scissors include an operating member having a shearing blade, another operating member having a receiving portion provided in a closable and separable manner with respect to the shearing blade, and a detecting element for detecting a live condition of an electric wire when the shearing blade is in contact with a conductor of the electric wire. A solenoid is provided which is excited when the detecting means detects the live condition of the electric wire. A first latch mechanism operated by the solenoid is provided on the first operating member, and a second latch mechanism is provided on the other operating member.
    Type: Grant
    Filed: August 19, 1993
    Date of Patent: August 15, 1995
    Assignee: Daikin Denshi Kogyo Co., Ltd.
    Inventor: Umetaro Nishizuka