Hoist overload clutch

Details Hoist overload clutch Hoist overload clutch

1980-02-15

1982-04-20

Krizmanich, George H.

192 clutches and power-stop control

Clutch and brake

Automatic check and release

192 56R, 192 95, F16D 1330, F16D 6702

Patent

active

043254705

ABSTRACT:
A ratchet lever hoist (10) which includes an overload clutch (19) enclosed within the hoist handwheel (16). The handwheel is driven through a spline connection with the input drive hub (24) of the hoist, and carries a plurality of first clutch disks 94. Second clutch disks (100) are carried by a load brake drive member (34) and frictionally engage the clutch disks (94) through friction disks (106) bonded to the second clutch disks (100). The clutch is preloaded to a torque capacity corresponding to the rated load of the hoist or a predetermined value over the rated load, such that the clutch will slip, preventing rotation of the load brake drive member when the torque capacity of the clutch is exceeded.

REFERENCES:
patent: 2829538 (1958-04-01), Mueller
patent: 3021932 (1962-02-01), Becknell
patent: 3756359 (1973-09-01), Suez et al.
patent: 4156521 (1979-05-01), Harman
patent: 4251060 (1981-02-01), Suzuki et al.

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