Patents by Inventor Robert R. Herder

Robert R. Herder 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).

  • Safety device for brush chipper
    Patent number: 4260114
    Abstract: A brush chipper having a guard (38) which is released to block the inlet (12) to the cutter (10) when an emergency condition is sensed. During normal operation of the chipper, the guard (38) is held out of the path of brush to the cutter (10). When a weight, in excess of a normal brush load, is sensed, as for example when the chipper operator is being drawn into the chipper, the guard (38) is released automatically and moves to block the inlet (12) to the cutter (10). This prevents the operator from being drawn into the cutter (10).
    Type: Grant
    Filed: October 12, 1979
    Date of Patent: April 7, 1981
    Assignee: Asplundh Tree Expert Company
    Inventor: Robert R. Herder