Patents by Inventor Michael W. Steffens

Michael W. Steffens 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).

  • Vehicle starting circuit to by-pass auxiliary steering system
    Patent number: 4079806
    Abstract: An electric circuit for use in the ignition system of a vehicle having an auxiliary steering system powered by the vehicle battery which is energized upon engine failure or shut down during vehicle operation. The ignition circuit disconnects the auxiliary steering system from the vehicle battery during engine starting to eliminate unnecessary drain on the vehicle battery.
    Type: Grant
    Filed: December 17, 1976
    Date of Patent: March 21, 1978
    Assignee: Fiat-Allis Construction Machinery, Inc.
    Inventors: Peter J. Hoag, Carl A. Keyzer, Michael W. Steffens