Electric hoist

Details Electric hoist Electric hoist

1976-06-04

1977-08-16

Spar, Robert J.

Implements or apparatus for applying pushing or pulling force

Step-by-step traveling bar

Pawl actuated

254174, 254190R, 212 39R, 318475, B66D 100

Patent

active

040422135

ABSTRACT:
In a multiple-reeved electric hoist of the type employing either a load cable winding drum or a load chain lift wheel, and wherein the dead end of the cable (or chain) carries a part of the load and is attached to the hoist frame; an improved overload sensing and responsive power shut-off and overload impact distributing device associated with the dead-end of the load lift cable (or chain) for deenergizing the hoist motor and protecting the hoist parts and its supporting structure against damage whenever an overload is applied to the hoist lift cable (or chain).

REFERENCES:
patent: 3095979 (1963-07-01), Silberger
patent: 3994476 (1976-11-01), Gennep

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