Hoisting assembly with a boom and a counterweight having adjusta

Details Hoisting assembly with a boom and a counterweight having adjusta Hoisting assembly with a boom and a counterweight having adjusta

1981-07-06

1984-05-22

Blix, Trygve M.

Traversing hoists

Having counterweight or counterbalancing means

Counterweight movable relative to load support

212211, B66C 2372

Patent

active

044496346

ABSTRACT:
A hoisting assembly comprising a boom and a counterweight support extending in opposite directions and forming an assembly pivotally mounted on a supporting member for pivoting in a same vertical plane, adjustable connecting device interconnecting the boom and the counterweight being provided for selectively adjusting the respective positions of the boom and of the counterweight. The counterweight may be slidingly mounted on a prolongation portion of the main portion of the boom.

REFERENCES:
patent: 2846081 (1958-08-01), Moore
patent: 3653486 (1972-04-01), McLean et al.
patent: 3955844 (1976-05-01), De Castella et al.
patent: 4032016 (1977-06-01), Graf
patent: 4155163 (1979-05-01), Schwartz
patent: 4155463 (1979-05-01), Buzzichelli et al.
patent: 4220246 (1980-09-01), Ray

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