Chain hoist with a clutch adjustable by means of the brake
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United States of America Patent
Stats
-
Dec 29, 1998
Grant Date -
N/A
app pub date -
Feb 27, 1996
filing date -
Mar 2, 1995
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A chain hoist contains a slipping overload clutch in the drive line which connects the electric motor to the chain sprocket. This slipping clutch has two clutch halves which are in frictional engagement with one another and are preloaded into frictional engagement with one another by a spring. A holding brake is furthermore provided and this holding brake acts against the clutch disks so as to increase the frictional grip between the clutch disks in the applied state. This ensures that when the hoist is started and the disengagement of the brake is delayed, the slipping clutch does not enter the slipping state.
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