Hoist assembly
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United States of America Patent
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-
Feb 3, 2009
Grant Date -
Dec 21, 2006
app pub date -
Jun 1, 2006
filing date -
Jun 1, 2005
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A hoist assembly for raising and lowering a load attached to a cable having a drum with a groove spirally disposed about its outer surface mounted within a frame. The groove having a predetermined pitch and configured to receive the cable wound about the drum. The drum has a cable take-off point where the cable ceases contacting the drum and is tangent to the drum. A head block is mounted to the frame and configured to receive the cable as it wound and unwound on the drum while maintaining tangential alignment with said take-off point.
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