Fifth wheel bearing plate cover with inboard protective skip pla

Details Fifth wheel bearing plate cover with inboard protective skip pla Fifth wheel bearing plate cover with inboard protective skip pla

1987-08-31

1988-06-21

Pekar, John A.

Land vehicles

Wheeled

Articulated vehicle

384421, B62D 5308, F16C 1704

Patent

active

047520817

ABSTRACT:
A low-friction plastic covering on the fifth wheel bearing plate of a tractor is protected from damage during tractor/trailer coupling by a pair of elongated metal "skip" plates. Such plates are preferably rectangular in shape and are positioned in the interior region of the plastic covering, one on each side of a tapered slot adapted to receive the kingpin of a trailer's fifth wheel tongue attachment. The size, shape and position of such skip plates minimize wear on the trailer's bolster plate, and minimize any tendency for tearing of the plastic covering during tractor/trailer coupling and normal use of the tractor-trailer. Preferably, the skip plates are welded to the tractor's fifth wheel bearing plate through counterbored slots in the plastic covering, whereby the skip plates additionally function as retainers for attaching the plastic covering to the underlying bearing plate.

REFERENCES:
patent: 3704924 (1972-12-01), Lowry
patent: 3924909 (1975-12-01), Kent et al.
patent: 4169635 (1979-10-01), Szalay et al.
patent: 4542912 (1985-09-01), St. Louis

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