Patents by Inventor Peter G. Keith

Peter G. Keith 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: 5382041
    Abstract: A method of connecting a trailer with a rigid drawbar and at least one centrally positioned axle to a tow vehicle is described. The method includes the following described steps. Firstly, connect the trailer drawbar to an intermediate hitch support having rotatably mounted ground engaging wheels, such that the hitch weight is borne by the intermediate hitch support. Secondly, pivotally connect an intermediate drawbar to the trailer drawbar for movement about a transverse horizontal axis. Thirdly, connect the intermediate drawbar to a hitch support mounted on a tow vehicle, such that a towing force is transmitted through the intermediate drawbar to the trailer drawbar. Fourthly, couple the tow vehicle and the intermediate hitch support through a pair of spaced apart steering arms. The steering arms have tow vehicle ends and intermediate hitch support ends. The tow vehicle ends are spaced equidistant from an intermediate drawbar hitch point on the tow vehicle hitch support.
    Type: Grant
    Filed: August 10, 1993
    Date of Patent: January 17, 1995
    Inventor: Peter G. Keith
  • Patent number: 5364117
    Abstract: A method of connecting a tow vehicle to a trailer having a front axle assembly which pivots about a vertical axis. The method includes the following steps which will be hereinafter described. Firstly, position a drawbar assembly between the tow vehicle and the trailer. The drawbar assembly has a tow vehicle end and a trailer end. The tow vehicle end is mounted to a single articulation point at a rear of the tow vehicle. The trailer end is pivotally mounted on a substantially horizontal transverse axis thereby accommodating up and down movement while precluding side to side movement of the drawbar assembly. Secondly, position a steering arm assembly between the tow vehicle and the front axle assembly of the trailer. The steering arm assembly includes a pair of steering arms having tow vehicle ends and trailer ends. The tow vehicle ends are adapted for omni-directional attachment to the tow vehicle equidistant from the single articulation point.
    Type: Grant
    Filed: August 10, 1993
    Date of Patent: November 15, 1994
    Inventor: Peter G. Keith