Patents by Inventor Don Hall

Don Hall 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: 4793497
    Abstract: A tilt-shelf cart system includes spaced, parallel uprights mounted atop a wheeled base with merchandise receiving shelves pivotally mounted between the uprights for limited pivotal movement between forwardly and rearwardly inclined positions. The pivot axes of the shelves are positoned so that the shelves, when fully loaded with merchandise, normally pivot toward their rearwardly inclined positions. The shelves are secured in either of the forwardly or rearwardly inclined positions by a latch mechanism which includes laterally extending latch pins which engage selected edges of a latch plate. The pins are withdrawn by a drawbar mechanism which requires both operator hands to operate. The two-handled drawbar is pivotally connected to a connecting link which, in turn, is pivotally connected to a rotatably mounted plate to cause limited rotation of the plate in response to movement of the connecting link.
    Type: Grant
    Filed: September 25, 1987
    Date of Patent: December 27, 1988
    Assignee: Cumberland Corporation
    Inventors: Don Hall, Charles F. A. Laitner, Jr.
  • Patent number: D309702
    Type: Grant
    Filed: June 25, 1986
    Date of Patent: August 7, 1990
    Inventor: Don Hall