Stacker crane
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United States of America Patent
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Oct 27, 2015
Grant Date -
Jul 5, 2012
app pub date -
Dec 23, 2011
filing date -
Dec 24, 2010
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A stacker crane has an upper frame, which connects upper portions of front and rear support rods standing from both front and rear end portions of a lower frame, respectively, is connected to the front and rear support rods by bolts. The upper frame includes a main part comprising a first plate following along a vertical direction and having front and rear extensions being extended in the front and rear directions of the crane and mast connecting portions being extended downward from both the front and rear ends of the front and rear extensions. The upper frame has a reinforcing part comprising a second plate following along a horizontal direction projecting from the main part in a width direction and being extended in the front and rear directions. The mast connecting portions of the main part are urged against the side surfaces of the front and rear support rods, respectively.
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