Importance

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Abstract

A compact roll-off trailer is short and light, but able to carry a large load. As such, the unit competes with roll-off trucks. A horizontally tilt frame has a forward section coupled to a king-pin assembly, a rear section with wheels on at least two axles, and a mid section. A frameless version uses a set of opposing arms as opposed to a separate, non-tilting frame. A single hydraulic cylinder has a retracted state wherein the lift frame is generally horizontal for hauling, and an extended state wherein the lift frame is pivoted at an angle for loading and unloading. A mechanism may be provided for extending the rearward portion of the lift frame to ground level when the hoist frame is pivoted, and a mechanism for pulling a cable with a container attached thereto onto the lift frame for hauling. The mechanism for extending the rearward portion of the lift frame may either include a ‘stinger tail’ or a slide frame on the lift frame a hydraulic cylinder for extending and retracting the slide frame. The latter configuration may include one or two sets of rollers to accommodate both ‘inside’ and ‘outside’ type containers. A “dead-lift” container-pulling mechanism may also be provided.

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First Claim