| 摘要 |
A roller system for moving a load a predetermined distance includes a chock frame having a pair of spaced chocks connected between a pair of rigid siderails and a freely moveable roller unit. The roller unit includes a plurality of rollers and is positioned between the siderails and freely moveable between the pair of spaced chocks. The load may then be moved in inchmeal fashion by slowly advancing the roller unit while shuffling the chock frame on the ground at a similar pace.
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