Patents by Inventor Paul Richard Engel

Paul Richard Engel 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).

  • Composite tool structure
    Patent number: 4096896
    Abstract: The invention relates to a composite tool structure in which an interconnection is effected between a tool receiving device and a tool member by providing mating parts with conforming polygonal shapes and a deformable elastomeric ring to obtain an optimum torque transfer between the tool receiving device and the tool member.
    Type: Grant
    Filed: April 29, 1977
    Date of Patent: June 27, 1978
    Assignee: Upson Tools, Inc.
    Inventor: Paul Richard Engel