Land vehicles – Wheeled – Nesting vehicles
Patent
1990-06-13
1992-02-04
Spar, Robert J.
Land vehicles
Wheeled
Nesting vehicles
206509, 280401, 298 8R, 414500, B60P 164
Patent
active
050854488
ABSTRACT:
A stackable roll-off box comprises a generally rectangular bin having first and second opposing sides, first and second ends, and a bottom. Wheels are mounted to the bottom of the bin at the four corner regions thereof, the wheels being positioned for enabling the roll-off box to be rolled in a longitudinal direction. First and second rollers, which are smaller in diameter than the wheels, are mounted to bottom regions of the bin adjacent to one of its ends, each of the rollers being positioned outboard of a corresponding wheel and directly beneath an associated one of the bin sides. The rollers are mounted so that their peripheries are above the peripheries of the wheels. Plates are fixed to each side of the bin outboard of the rollers, the plates extending downwardly below lower regions of the rollers. An upwardly-opening roller-receiving recess is provided in upper regions of each of the bin sides above the rollers, the recesses being ramp shaped at one end. A roller stop is attached to the bin at the end of the recesses away from the ramps. Releasable locking levers are mounted adjacent each recess to keep rollers of an above stacked roll-off bin retained in the recesses. A kit, which includes two rollers, two plates, locking levers, and surfaces for the recesses, is provided for modifying existing, non-stackable roll-off boxes.
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Hackler Walter A.
Krizek Janice
Spar Robert J.
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