Grooved drum and associated roller for motorized lifting device

摘要

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.

主权项

1. An apparatus comprising:
a motor; a drum rotated by the motor to draw in or let out a line from the drum, the drum comprising a groove formed in an outer surface thereof to accommodate the line; and a roller tracking and extending into the groove immediately over the line in order to push the line into the groove.