Clutch structure for manual hoists

Details Clutch structure for manual hoists Clutch structure for manual hoists

2009-03-09

2011-11-01

Binda, Gregory (Department: 3679)

192 clutches and power-stop control

Clutches

Torque responsive

C464S036000

Reexamination Certificate

active

08047348

ABSTRACT:
A clutch structure for manual hoists includes a driven wheel for driving the wind device in the manual hoist. A ratchet and at least one resilient member are sequentially and co-axially mounted on the driven wheel. A nut is screwed onto the driven wheel to prevent the ratchet and the at least one resilient member from detaching from the driven wheel. The at least one resilient member axially pushes the ratchet to make the ratchet securely abut the driven wheel, and enhance the friction between the ratchet and the driven wheel, wherein the connecting intensity is the load limit of the manual hoist. The push force from the at least one resilient member to the ratchet is adjusted, and the friction between the ratchet and the driven wheel is adjusted when the position of the nut is adjusted.

REFERENCES:
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patent: 3185275 (1965-05-01), Orwin
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patent: 4348011 (1982-09-01), Honda
patent: 4372433 (1983-02-01), Mitchell et al.
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patent: 4768754 (1988-09-01), Nishimura
patent: 5005684 (1991-04-01), Fujii
patent: 6132435 (2000-10-01), Young
patent: 6517054 (2003-02-01), Samejima
patent: 6799666 (2004-10-01), Kampf
patent: 2005/0167229 (2005-08-01), Tsukada et al.

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