Drawworks
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
May 27, 2010
app pub date -
Apr 24, 2008
filing date -
Apr 27, 2007
priority date (Note) -
Abandoned
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Abstract
A drawworks (10) comprising a permanent magnet motor (60) mounted inside a drum(40), said permanent magnet motor arranged to drive said drum via a gear system(50), characterised in that said gear system is located at least partially within said drum.
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