Patents by Inventor Donald R. Warren

Donald R. Warren 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).

  • Shoe bracket assembly for vertical shaft impact crushing machines
    Patent number: 4397426
    Abstract: A shoe bracket assembly is described for mounting an impeller shoe to the horizontal rotatable turntable of a vertical shaft centrifugal crushing machine. The shoe bracket includes removable wear protector plates on opposed end faces thereof. The plates protect the rigid base member of the bracket assembly against wear. The wear plates are slidably mounted to the base member by slidable dovetail connector members and are locked into place between abutment surfaces on the base member and a back face surface of the impeller shoe. The plates can be easily removed and replaced following removal of the impeller shoe.
    Type: Grant
    Filed: May 7, 1981
    Date of Patent: August 9, 1983
    Assignee: Spokane Crusher Mfg. Co.
    Inventors: Donald R. Warren, Kenneth D. Warren