Grooved drum and associated roller for motorized lifting device
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United States of America Patent
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Jul 26, 2016
Grant Date -
Oct 8, 2015
app pub date -
Apr 4, 2014
filing date -
Apr 4, 2014
priority date (Note) -
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Abstract
An apparatus includes a drum to draw in or let out a line and a motor coupled to the drum to apply a torque thereto. The drum includes a groove formed in an outer surface thereof to accommodate the line. A roller is provided that tracks the groove and extends into the groove. The roller pushes the line into the groove. In certain embodiments, the roller pushes the line to a bottom of the groove to ensure that the line is properly seated therein.
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