Patents by Inventor Herbert D. Oltman

Herbert D. Oltman 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).

  • Drive and steering apparatus
    Patent number: 4101004
    Abstract: A drive and steering apparatus for a vehicle of a type having ground engaging wheels or tracks on each side thereof. A shaft rotatably connected to the frame of the vehicle is selectively rotated by a motor through a drive train. A first drive assembly is rotatably disposed on one side of the shaft and a second drive assembly is rotatably disposed on the other side of the shaft. A first clutch mechanism is attached to the shaft and is selectively movable between positions in contact with the first drive assembly and out of contact with the first drive assembly. A first brake mechanism is attached to the frame and is selectively movable between positions in and out of contact with the first drive assembly.
    Type: Grant
    Filed: January 31, 1977
    Date of Patent: July 18, 1978
    Inventor: Herbert D. Oltman