Patents by Inventor Robert D. Hambrick

Robert D. Hambrick 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).

  • Friction shock assembly for a forging hammer
    Patent number: 4398409
    Abstract: A friction shock absorber comprised of a plurality of mating friction surfaces in constant contact together is incorporated on an oscillating member of the valve shifting mechanism of a forging hammer for preventing the valve from bouncing away from its intended position after it has been shifted by the motion of the forging hammer ram.
    Type: Grant
    Filed: February 23, 1981
    Date of Patent: August 16, 1983
    Assignee: National-Standard Company
    Inventor: Robert D. Hambrick