Patents by Inventor Robert Exel

Robert Exel 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).

  • Plastic Ring for Removably Fixing a Round Shank Chisel in a Chisel Bush
    Publication number: 20080308981
    Abstract: A plastic ring (9) for detachably fixing a rounded-shaft tool (1) into a tool bushing (6), wherein the inside of the tool bushing (6) has an annular groove (7), into which the elastic plastic ring (9) held in an annular groove (3) of the tool shaft (2) engages, is designed in a slotted fashion and has at least one rib projecting beyond the outer surface of the plastic ring (9) and extending across at least a portion of the periphery of the plastic ring (9).
    Type: Application
    Filed: March 31, 2006
    Publication date: December 18, 2008
    Inventor: Robert Exel