Land vehicles – Wheeled – Articulated vehicle
Patent
1985-08-16
1987-04-14
Love, John J.
Land vehicles
Wheeled
Articulated vehicle
280478B, B60D 106
Patent
active
046572767
ABSTRACT:
A coupling assembly for coupling a tractor to a drawn vehicle or implement comprises a coupling body for attachment to one of a tractor drawbar or trailer tongue, and for engagement with a ball secured to the other of said tractor drawbar or trailer tongue, the body defining ramp means for guiding a ball into a socket forming part of the body, a movable element for locking a ball in said socket, movable second ramp means for guiding a ball out of the socket, and means for operating the movable element and second ramp means between a locking position in which the ball is held in the socket and a release position in which the ball is free to move out of the socket up the second ramp means.
REFERENCES:
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patent: 2385596 (1945-09-01), Yager et al.
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patent: 2723866 (1955-11-01), Hollingsworth
patent: 2847234 (1958-08-01), Clark
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patent: 3679243 (1972-07-01), Hamerl
patent: 4018453 (1977-04-01), Bigelow
patent: 4209184 (1980-06-01), Byers
patent: 4320907 (1982-03-01), Eaton
Sunday Tab, Apr. 8, 1979, p. 33, "Family Living", Linda Curtis, Editor.
Wagonsnagger; Automatic Wagon Hitch; Canada.
Love John J.
McGiehan Donn
Smart Russel S.
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