Patents by Inventor Brian Steinhobel

Brian Steinhobel 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).

  • Bottom discharge hopper
    Patent number: 4762458
    Abstract: A bottom discharge hopper includes an elongated rectangular discharge opening closable by two discharge doors hinged along their outer edges to the hopper so that the doors are biased to an open position. Each door includes control means comprising a biasing member pivotally mounted to the hopper which biases a runner at each end of the door along a runner track on the door towards a position corresponding to the closed position of the door, the runners being located substantially directly below the pivot of the biasing member in this closed position.
    Type: Grant
    Filed: March 20, 1987
    Date of Patent: August 9, 1988
    Inventors: Deon A. van der Merwe, Brian A. Steinhobel
  • Clock
    Patent number: D331368
    Type: Grant
    Filed: February 15, 1990
    Date of Patent: December 1, 1992
    Inventor: Brian A. Steinhobel