Patents by Inventor Donald George MacLeod Whittaker

Donald George MacLeod Whittaker 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).

  • Steering linkages
    Patent number: 4070031
    Abstract: A steering linkage for a wheeled trailer vehicle or implement comprising a frame, in which a bar is slidably mounted in a transverse frame member, the said bar having a rack formed thereon and in mesh with a pinion rotatble by a steering, or link, rod to impart sliding motion to the bar in response to movement of the steering rod, the bar being linked to steerable wheels of the vehicle or implement.
    Type: Grant
    Filed: April 5, 1976
    Date of Patent: January 24, 1978
    Inventor: Donald George MacLeod Whittaker