Patents by Inventor Robert P. Clark

Robert P. Clark 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).

  • Weighted pinch rolls
    Patent number: 4036421
    Abstract: A mechanism for biasing a plurality of pinch rolls into engagement with a drive roll is provided wherein the biasing force is effected by a weight or weights. The pinch rolls are mounted on a common rotatable shaft, which rotates on supports which independently pivot about a common shaft, whereby the pinch rolls are free to align with a drive roll to provide full line contact therebetween and the biasing force is evenly distributed on the pinch rolls. The weights are pivotally mounted on the supports.
    Type: Grant
    Filed: June 17, 1976
    Date of Patent: July 19, 1977
    Assignee: Xerox Corporation
    Inventors: Robert P. Clark, Eugene F. Miller