Patents by Inventor George B. Simpson

George B. Simpson 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).

  • Pressure control system for ring debarkers with rotary cutters
    Patent number: 5117881
    Abstract: A ring debarker has counterbalanced swing arms on which rotary cutters are mounted. The counterbalancing of the swing arms is such that the centrifugal and gravitational forces on the swing arms as they rotate around a log being debarked are substantially neutralized so that debarking pressure exerted on the cutters can be accurately controlled by controlling air pressure used to bias the swing arms.
    Type: Grant
    Filed: May 14, 1991
    Date of Patent: June 2, 1992
    Assignee: Nicholson Manufacturing Company
    Inventor: George B. Simpson