Electric powered lift with load control
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United States of America Patent
Stats
-
Dec 25, 2007
Grant Date -
N/A
app pub date -
Feb 1, 2007
filing date -
Feb 1, 2007
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A lifting device utilizing a utility winch having an electric motor and cable drum. The cable on the cable drum extends around a pulley located on a load cell beam. Excessive loads will deflect the load cell beam causing a contact on a micro switch to be engaged to shut off power to the motor. The cable is attached to a trolley which reciprocates along a mast between upper and lower limits. The trolley includes a brake which has a drum which engages the mast to stop in travel of the trolley in the event of a cable breakage. Cable tension is also sensed and cable slack will actuate a switch to interrupt power to the electric motor. Various load handling attachments are detachably securable to the trolley.
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