Patents by Inventor Hiroshi Inuzuka

Hiroshi Inuzuka 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).

  • Hinge which facilitates opening door after the gate frame is distorted
    Patent number: 4561147
    Abstract: A door hinge of the type comprising a first metal plate having one vertical side edge formed integral with a pin and a second metal piece having one vertical side edge formed integral with a second knuckle cylinder into which is fitted the pin. A load plug is slideably fitted into the second knuckle cylinder for engagement with the upper end of the pin and the second knuckle cylinder is formed with an engaging portion for preventing the load plug from being displaced from a predetermined position. A compression spring means is loaded in the second knuckle cylinder above the load plug so as to press the load plug against the engaging portion, whereby a load applied axially to the pin is carried by the compression spring means through the load plug.
    Type: Grant
    Filed: December 22, 1983
    Date of Patent: December 31, 1985
    Assignee: Miwa Lock Co. Ltd.
    Inventors: Yoshiaki Katoh, Hiroshi Inuzuka