Patent ID: 7665952

Claim:
A method of providing for altering a position of a trailer deck with respect to a trailer frame, axles and wheels of the trailer being operatively affixed to the frame, diagonal tracks being operatively, rigidly affixed to the frame and rollers being operatively, rotatably affixed to the deck, said method comprising the steps of: (a) arranging the diagonal tracks, operatively, rigidly affixed to the frame, in a vertical plane oriented parallel to a direction of trailer travel, at a diagonal compared to a vertical direction; (b) engaging the rollers, operatively, rotatably affixed to the deck, to the diagonal tracks; (c) restricting the rollers to a transport position when the trailer is transported; (d) rolling said rollers up the diagonal tracks above the transport position to raise the deck relative to the frame; and (e) rolling said rollers down the diagonal tracks below the transport position to lower the deck relative to the frame.