Patents by Inventor Walter Bernhardt

Walter Bernhardt 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).

  • OFF-ON-START switching system for diesel engines, and particularly automotive-type diesel engines
    Patent number: 4106465
    Abstract: To simplify the circuitry and improve reliability of pre-heat, glow-plug or the like operation while using a conventional automotive OFF-ON-START switch, a momentary-operation pre-heat switch is included in the circuit, as well as a heat-sensitive relay and a timing circuit, the heat-sensitive relay determining if pre-heating has been sufficient, and the timing relay then providing a limited time period to permit starting of the engine while still maintaining pre-heat conditions but discontinuing pre-heat conditions if starting is not commanded.
    Type: Grant
    Filed: May 16, 1977
    Date of Patent: August 15, 1978
    Assignee: Robert Bosch GmbH
    Inventors: Walter Bernhardt, Bodo Ziegler