Operating device for electric hoist
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United States of America Patent
Stats
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Jul 4, 1989
Grant Date -
N/A
app pub date -
Feb 9, 1988
filing date -
Feb 18, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An operating device for an electric hoist, comprises a switch box and a cylindrical body connected to a lower end of a chain depending from a main body of the electric hoist for lifting a load. To a lower end of the cylindrical body is connected a lower hook hanging the load to be lifted. The operating device further comprises a grip vertically slidably fitted on the cylindrical body and kept at a substantially mid position of a slidable distance of the grip relative to the cylindrical body, raising and lowering switches for raising and lowering the load provided in the cylindrical body to be actuated by a striker fixed to the grip, high and low speed alteration switch provided in the switch box for changing high and low operating speeds of the electric hoist, and a stepless speed adjusting device for adjusting the high and low operating speeds of the electric hoist in a stepless manner.
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