Patents by Inventor Kurt Hampel

Kurt Hampel 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).

  • Method for making rotors
    Patent number: 6332271
    Abstract: A method for making rotors for screw-type machines with a plunge-cut turning method in which an approximately rectangular groove is formed approximately at a center of a work piece with trilateral machining, a groove is cut radially deeper by trilateral machining until a predetermined groove depth has been reached, the profile flanks are shaped by bilateral machining, and the groove depth is increased with a recessing tool.
    Type: Grant
    Filed: May 26, 2000
    Date of Patent: December 25, 2001
    Assignee: Joh. Heinr. Bornemann GmbH
    Inventor: Kurt Hampel