Elevating platform assembly
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United States of America Patent
Stats
-
Feb 25, 2003
Grant Date -
Nov 21, 2002
app pub date -
May 21, 2001
filing date -
May 21, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
An elevating platform assembly includes a generally vertical mast having a generally vertical rack mounted thereon. A first trolley is coupled to the mast and is moveable therealong. A drive mechanism is carried by the first trolley and includes at least one pinion in mating engagement with the rack. An elongated elevating platform extends from the mast and has a second trolley mounted adjacent one end thereof. The second trolley couples the elevating platform to the mast and is moveable along the mast. The first trolley is coupled to at least one of the second trolley and elevating platform in a manner to maintain alignment of the at least one pinion and rack when loads are placed on the elevating platform that create moments at the mast.
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