Retractable single-motion lever jack

Details Retractable single-motion lever jack Retractable single-motion lever jack

2007-06-08

2009-11-03

Morris, Lesley D. (Department: 3611)

Land vehicles

Wheeled

Articulated vehicle

C280S766100, C280S763100, C254S423000, C254S418000

Reexamination Certificate

active

07611160

ABSTRACT:
A lever actuated jack may be mounted to a trailer. An inner jack tube slidably engages the outer jack tube. A lever is attached to the upper end of the inner jack tube, or to an inner support bracket that communicates with an upper portion of the inner jack tube. The lever is pivoted, applying a downward force to the inner jack tube, which pushes the tongue of the trailer up to elevate the tongue of the trailer as required. The lever is sufficiently long to provide adequate mechanical advantage to force the tongue of a loaded trailer upwardly the required distance. The lever may be pivoted in the opposite direction to lower the tongue of the trailer by pulling the inner jack tube within the outer jack tube.

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