Trailer back-up coupling

Details Trailer back-up coupling Trailer back-up coupling

1984-07-27

1986-03-04

Pekar, John A.

Land vehicles

Wheeled

Articulated vehicle

280446B, 280474, 280DIG14, B62D 5308

Patent

active

045736995

ABSTRACT:
To enable a semi-trailer or full trailer to back up on a straight path, a remotely controlled locking plunger attached to the fifth wheel of a tractor or converter dolly is extended upwardly to enter a bushing carried by the king pin plate on the bottom of the trailer. The arrangement locks the trailer against pivoting relative to the tractor fifth wheel around the axis of the king pin.

REFERENCES:
patent: 1734969 (1929-11-01), Hatashita
patent: 3420548 (1969-01-01), Wakeman
patent: 3497241 (1970-02-01), Jones
patent: 3963265 (1976-06-01), Kornoelje et al.
patent: 4119330 (1978-10-01), Capps
patent: 4120514 (1978-10-01), Sanders
patent: 4252336 (1981-02-01), Hubbard

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