Material handling apparatus with load compensated counterweight

Details Material handling apparatus with load compensated counterweight Material handling apparatus with load compensated counterweight

1975-10-17

1977-01-25

Smith, Gary L.

Traversing hoists

Overhead

Cable

214142, B66C 2372

Patent

active

040046966

ABSTRACT:
A beam cantilevered from the pivoted end of the elongated boom on a material handling structure is coupled at its outer end to a pivoted strut carrying a counterweight connected through tension bars to a point well out on the boom such that a portion of the moment generated by the counterweight is removed from the boom and supported by the cantilevered beam in the absence of live load on the boom. As live load is applied and the boom begins to bend, the tension bars pivot the counterweight strut relative to the cantilevered beam thereby relieving the loading on the cantilevered beam and applying the full moment developed by the counterweight to the boom.

REFERENCES:
patent: 3530999 (1970-09-01), Naruns
patent: 3750895 (1973-08-01), Durand
patent: 3767030 (1973-10-01), Briggs
patent: 3851767 (1974-12-01), Durand

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