Patents by Inventor Thurman O. Ruettinger

Thurman O. Ruettinger 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).

  • Coupling apparatus for full time four wheel drive
    Patent number: 4031780
    Abstract: Four wheel drive train including a transfer case adapted to provide full time four wheel drive. A differential is provided in the transfer case and includes both a viscous coupling and a viscous fluid operated mechanical clutch which may be operated to inhibit and prevent differentiation.
    Type: Grant
    Filed: November 29, 1974
    Date of Patent: June 28, 1977
    Assignee: Chrysler Corporation
    Inventors: Courtney F. Dolan, Thurman O. Ruettinger