作者: Fred P. Smith , Jack Mitchell
DOI:
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摘要: A vehicle comprising a body having front end and rear end, wheels carried by axle mounted to the proximate of vehicle, cargo for carrying load, framework an inner pivotally outer rotation trailing axle, transverse pivotal movement relative body, movable between extended orientation wherein is located generally outboard retracted inboard framework, pair lifting arms moving from operative position positionable in with thereof disposition on road maximizing overall length ascending traverse inoperative rearward descending position.