Heavy-duty crane with counterweight

Details Heavy-duty crane with counterweight Heavy-duty crane with counterweight

1979-01-05

1981-07-28

Sheridan, Robert G.

Traversing hoists

Having counterweight or counterbalancing means

Counterweight movable relative to load support

212197, 212200, B66C 2372

Patent

active

042806275

ABSTRACT:
In a heavy-duty crane particularly suitable for lifting heavy loads over tall buildings, a substructure supports a rotatable main boom. A jib for carrying the load and a secondary spar for carrying a counterweight by means of a cable are hinged to the tip of the main boom. The counterweight swivels together with turning of the loaded crane. The jib is guyed by way of the secondary spar which overhangs so far that the counterweight is disposed beyond the confines of the substructure.

REFERENCES:
patent: 3930583 (1976-01-01), Jouffray
patent: 4170309 (1979-10-01), Lampson

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