Patents by Inventor Woodrow C. Whitchurch

Woodrow C. Whitchurch 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).

  • Patent number: 3955831
    Abstract: A compound trailer hitch which includes a pair of links pivotally interconnecting a pickup truck and a two-wheel type trailer. The links converge symmetrically from spaced apart positions at the leading end of the trailer to the trailing end of the truck. This convergence is such that the forward projectons of the links converge to define a pivot axis which is at the longitudinal axis of the truck and near the rear axle thereof whenever the truck and trailer are in alignment.The front portion of the weight of the trailer and the load upon it is supported upon the truck by an arm similar to a gooseneck hitch. This arm is pivoted at each end, at the truck and at the trailer, and it also slides in a groove at the truck connection to compensate for the drifting of the pivot axis defined by links which occurs whenever the trailer swings to an angle with respect to the truck, as in a turn.
    Type: Grant
    Filed: April 14, 1975
    Date of Patent: May 11, 1976
    Inventor: Woodrow C. Whitchurch