Operating device for electric hoist

Implements or apparatus for applying pushing or pulling force – Apparatus for hauling or hoisting load – including driven... – Device includes rotatably driven – cable contacting drum

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Details

200298, 254362, B66D 146, H01H 906

Patent

active

048444219

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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patent: 3921959 (1975-11-01), Ulbing
patent: 3948487 (1976-04-01), Motoda
patent: 4758724 (1988-07-01), Osika

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