Self-contained lifting apparatus for low-boy trailers

Details Self-contained lifting apparatus for low-boy trailers Self-contained lifting apparatus for low-boy trailers

1982-09-30

1985-04-30

Pekar, John A.

Land vehicles

Wheeled

Articulated vehicle

414481, B60P 134, B62D 5306

Patent

active

045139873

ABSTRACT:
The present invention is comprised of extensible piston cylinders which extend between first points located on a trailer and second points located on a gooseneck which interconnects the trailer to a tractor. The gooseneck and the trailer are rotatably coupled to one another at a common pivot point and the common pivot point, the first points and second points are arranged relative to one another such that as the piston cylinder is extended or retracted the gooseneck and trailer are respectively raised or lowered relative to the ground. The gooseneck is arranged so that it substantially encloses the piston cylinders throughout their entire range of travel thereby protecting them from damage. In addition a locking apparatus permits locking the piston cylinders to both the first and second points to present rotation of the gooseneck relative to the trailer. Thus the gooseneck and trailer can be removed from the tractor as a single unit.

REFERENCES:
patent: 2754987 (1956-07-01), Kern
patent: 3429585 (1969-02-01), Ross
patent: 3517945 (1970-06-01), Fikse
patent: 3866947 (1975-02-01), Yakubow
patent: 4367884 (1983-01-01), Johnson et al.

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