ELECTRIC HOIST OVERLOAD PROTECTION DEVICE

摘要

A hoist overload prevention device featuring a pair of spring devices deformable under relatively low and relatively high loading conditions, and a snap action switch arranged to be "reset" and "cut out" during such low and high loading conditions, respectively, whereby an electric circuit for controlling lifting operation of the hoist is "cut out" upon the occurrence of an overload condition and subsequently "reset" only after substantially all loading is removed from the hoist.