Dragline Boom
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United States of America Patent
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Issued Date -
Aug 4, 2016
app pub date -
Jan 30, 2015
filing date -
Jan 30, 2015
priority date (Note) -
Published
status (Latency Note)
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Abstract
A boom uses formed plates instead of a round pipes for the chords of the boom. Each formed plate provides a flat surface for attaching lacings so that complex coping cuts required for round pipe chords can be eliminated. The boom also displaces lacing attachment points so that overlapping welds in previous boom assemblies are also eliminated. The open back of the formed plate and non-overlapping lacing attachment points eliminate hidden welds and obscured mounting surfaces that make inspections and repairs of current boom assemblies difficult or impossible.
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