UNIFORM FOOTPRINT MULTI-WHEEL END TRUCK FOR A CRANE
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United States of America Patent
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Issued Date -
Nov 17, 2016
app pub date -
May 13, 2015
filing date -
May 13, 2015
priority date (Note) -
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Abstract
According to one aspect, a supporting truck for a crane comprises a load bearing member and a frame rigidly coupled to the load bearing member. A plurality of substantially equally spaced and substantially equally sized wheels is rigidly journaled in the frame at substantially equal heights such that the wheels have a single degree of freedom comprising rotational movement with respect to the frame and the load bearing member. The load bearing member and the frame have a moment of inertia of at least a particular value to cause the wheels to experience substantially equal loading by forces applied to the load bearing member.
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