Hinge system for combination hand truck, step ladder and dolly device
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United States of America Patent
Stats
-
Apr 12, 2005
Grant Date -
Oct 14, 2004
app pub date -
Sep 25, 2003
filing date -
Apr 11, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A multi-use move, lift, and support device is disclosed. The device is made of a step ladder frame containing a plurality of steps and a hand truck frame. At least one hinge pivotally connects the step ladder frame to the hand truck frame. An anti-wobble hook may be used to lock the frames in a step ladder configuration. The hook is moved in position by the force of gravity.
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