Electric hoist
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United States of America Patent
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-
Mar 6, 1984
Grant Date -
N/A
app pub date -
Oct 7, 1981
filing date -
Oct 9, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
This electric hoist incorporates a wedging-groove pulley controlling a free-end wire-rope and comprises an epicyclic reducing gear surrounding the motor output shaft and providing a high reduction ratio with a minimum axial length; the gear comprises a sun wheel rigid with the motor shaft, planets meshing with this wheel and also with two internally toothed annuli having different tooth numbers, namely a fixed annulus and a driven annulus rigid with the wedging pulley coaxial with the motor shaft.
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