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Hoist brake construction featuring cam devices










Image Number 3 for United States Patent #4009770.

A hoist employs a modified Weston brake characterized as having an axially aligned ratchet pawl or plate and ratchet wheel assembly and a cam device operable to supplement spring force applied to the ratchet assembly for gaining and maintaining a positive engagement of the ratchet assembly during load lowering or holding thereof.








 
 
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