Material or article handling – Self-loading or unloading vehicles – With load-receiving portion – or significant section thereof,...
Patent
1987-02-02
1988-05-24
Spar, Robert J.
Material or article handling
Self-loading or unloading vehicles
With load-receiving portion, or significant section thereof,...
414494, 414500, 414538, B60P 104
Patent
active
047462612
ABSTRACT:
The self-loading tilt bed trailer has an elongated tiltable bed normally disposed in a substantially horizontal road traveling position that may be tilted about a transverse horizontal axis to a downwardly and rearwardly inclined position. The bed is pivotally coupled at its front end to a towing tractor for pivotal movement of the bed about a substantially vertical axis. When the bed is tilted steeply enough to raise the wheels completely off the ground so the weight of the bed is supported only by a ground-engaging pad at the rear of the bed and the tractor at the front, actuation of a hydraulic cylinder associated with the pad causes the rear of the bed to be shifted a short distance to the right or left relative to the stationary pad, pivoting about the upright hitch axis at the tractor. The bed-supporting undercarriage of the trailer may be moved from a rearward, road traveling position to a forward tilt position for decreasing the slope angle necessary to bring the rear end of the bed into engagement with the ground.
REFERENCES:
patent: 2717707 (1955-09-01), Martin
patent: 2753064 (1956-07-01), Lesser
patent: 3485400 (1969-12-01), Pewthers
patent: 3934740 (1976-01-01), Rumell
patent: 4125198 (1978-11-01), Landoll
patent: 4231710 (1980-11-01), Landoll
patent: 4492507 (1985-01-01), Landoll et al.
patent: 4616726 (1986-10-01), Johansson
Belknap Alfred R.
Domine Michael C.
Landoll Donald R.
Swart Kyle D.
Landoll Corporation
Millman Stuart J.
Spar Robert J.
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