Patents by Inventor Erwin Nitz

Erwin Nitz 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).

  • Arrangement in a rotatable device to protect against over-tightening
    Patent number: 5795116
    Abstract: A rotatable device, such as a screw, a bolt, etc., comprises a cylindrical clip (4) inserted into a bore (3) in the head of the rotatable device. The clip (4) is compressed to a certain extent when inserted into the bore in order to confer to the clip a springing effect on the wall of the bore. Further, the clip comprises a socket for the insertion of a suitable turning key. When turning the key, only a maximum torque is transferable to the rotatable device. If this value is exceeded, the clip starts sliding in the bore.
    Type: Grant
    Filed: March 10, 1997
    Date of Patent: August 18, 1998
    Assignee: Sandvik AB
    Inventors: Peter Frank, Klaus Kraft, Erwin Nitz, Magnus Aspeby