Device for handling a structure that is being lifted or lowered
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United States of America Patent
Stats
-
Sep 1, 2009
Grant Date -
May 22, 2008
app pub date -
Jan 27, 2006
filing date -
Jan 28, 2005
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An operating includes a rack cut on both sides, sandwiched between two pinions with horizontal axes and arranged in the same horizontal plane or substantially in the same horizontal plane, driven into opposite directions by the same motorized system. The outlet shaft of the motorized system transmits the driving motion to a primary reducing system whose outlet shaft corresponds to the inlet shaft of a secondary reducing gear of planetary differential type including a solar pinion, satellite pinions and an outer ring. The satellite holder of the secondary differential reducing gear drives one of the pinions on one of the sides of the double rack, and the outer ring of the planetary reducing gear drives, by appropriate mechanical elements, a toothed wheel in charge of driving the second pinion on the other side of the double rack.
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