Patents by Inventor Guenther Bensch

Guenther Bensch 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).

  • Valve needle and method for producing a valve needle
    Patent number: 5072885
    Abstract: A fuel injection valve for an internal combustion engine, in which the valve needle blanks are cut from a profile bar having grooves in its circumference which extends the direction of the longitudinal axis; the blanks are then twisted to form helical grooves and then machined in a metal-cutting manner, in order to produce the final needle shape.
    Type: Grant
    Filed: April 13, 1990
    Date of Patent: December 17, 1991
    Assignee: Robert Bosch GmbH
    Inventors: Waldemar Hans, Guenther Bensch