Patents by Inventor Roland Schindhelm

Roland Schindhelm 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).

  • Screwdriver handgrip having harder and softer zones
    Patent number: 4739536
    Abstract: A handle for tools, specifically for screwdrivers, is disclosed. The handle consists of two materials of different hardness, of which the harder material supporting the tool is incompressible under the forces occurring at operational load, whereas the other material permits slight elastic deformations under forces of load. In order to obtain a hand-sympathetic design which nevertheless transmits high torques, the two gripping zones of softer material are situated adjacent to a gripping zone of harder material located between them.
    Type: Grant
    Filed: July 7, 1986
    Date of Patent: April 26, 1988
    Assignee: Wera Werk Hermann Werner GmbH & Co.
    Inventors: Jan-Eric Bandera, Peter Kern, Roland Schindhelm, Johannes Solf, Karl Lieser