Land vehicles – Wheeled – Articulated vehicle
Patent
1975-11-21
1977-01-18
Goodman, Philip
Land vehicles
Wheeled
Articulated vehicle
280432, B60D 116
Patent
active
040035867
ABSTRACT:
In a combination including a towing vehicle equipped with a ball type tow hitch and a trailer equipped with a forwardly projecting tongue portion having a socket type tow hitch mounted on its forward end removably universally coupled to the ball type tow hitch the free ends of a U-shaped frame are pivotally supported to the rear of the tow vehicle for oscillation about a horizontal transverse axis and with the frame opening in a horizontal direction and having its closed end spaced rearward of the ball-and-socket type tow hitches and underlying the tongue portion of the trailer. An adjustable caliper-type friction brake assembly provided with opposing and relatively adjustable generally horizontal and vertically spaced friction surfaces is stationarily supported from the tongue portion of the trailer with the closed end of the U-shaped frame disposed between the friction surfaces of the brake assembly. The closed end of the frame is of substantially constant radius of curvature and its center of curvature substantially coincides with a vertical axis extending through the removably coupled ball-and-socket type tow hitches. In this manner, relative angular displacement of the towing vehicle and trailer about an upstanding axis passing through the ball-and-socket type tow hitches is frictionally resisted to an extend (adjustable) enabling intentional relative angular displacement of the towing vehicle and the trailer such as occurs during turning operations, but frictionally resisting swaying movements of the rear end of the trailer from side to side during movement of the towing vehicle along a substantially straight path.
REFERENCES:
patent: 2711908 (1955-06-01), Saxon
patent: 3393923 (1968-07-01), Rendessy
patent: 3400948 (1968-09-01), Matson
patent: 3519287 (1970-07-01), Pontbriand
Goodman Philip
Jacobson Harvey B.
Mentor Products, Inc.
O#Brien Clarence A.
Schrecencost R.
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