Patents by Inventor John W. Graf

John W. Graf 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: 4105112
    Abstract: A lockable box has a tray and cover hinged together at the open rear end of the cover and locked at their opposite ends. A pair of detent spring fingers extending upwardly from the end of the tray lock over shoulders within the unhinged end of the cover. The detent spring fingers are released to open the box by inserting key lugs through holes in the lid of the cover in line with the spring detent fingers to disengage them from the cover. The cover and a tray are hinged together by a pair of elongated combination slide and hinge pins extending out from the rear midportions of the sides of the tray, whose longer dimension rotatably engages within hinge sockets at the rear ends of adjoining longitudinal grooves within the sides of the cover.
    Type: Grant
    Filed: February 10, 1977
    Date of Patent: August 8, 1978
    Assignee: Howmedica Inc.
    Inventor: John W. Graf