UPPER SLEWING BODY AND OPERATING MACHINE HAVING THE SAME
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United States of America Patent
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N/A
Issued Date -
Apr 18, 2013
app pub date -
Oct 8, 2012
filing date -
Oct 14, 2011
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An upper frame has a bottom plate, a pair of vertical plates that are provided to stand on the bottom plate so as to face each other in a right-left direction, and a left side frame configuring a part of a rim part of the upper frame. An attachment is supported on a support parts provided in front of the slewing bearing in vertical plates. A left vertical plate has a rear curved part, behind the support part, which is curved forming a convex shape directed toward an opposite side of a right vertical plate in a planar view. The upper slewing body further has a first coupling member for coupling the left side frame and the left vertical plate to each other so as to prevent the left vertical plate from being deformed in a direction in which the rear curved part approaches the right vertical plate.
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