Patents by Inventor E. Harald Zimmermann

E. Harald Zimmermann 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).

  • Spreading anchor
    Patent number: 4702654
    Abstract: A spreading anchor comprising an anchor rod (1) including a spreading cone (5) on its front end (4) in the direction of insertion of said anchor (1), the spreading cone (5) flaring in the insertion direction and adapted to cooperate with a spreading sleeve (9) which is provided with several longitudinal slots (10), said slots (10) originating from the front rim (11) of said spreading sleeve (9) and forming spreading lamellae (18), at least two of said spreading lamellae (18) being opposed, the end faces (21) of said opposed lamellae (18) in the insertion direction being provided with cutting inserts.
    Type: Grant
    Filed: September 22, 1986
    Date of Patent: October 27, 1987
    Assignee: Upat GmbH & Co.
    Inventors: Albert Frischmann, Johannes Rieger, Kurt Mermi, Herbert Kistner, E. Harald Zimmermann