Balancing system for high capacity cranes

Details Balancing system for high capacity cranes Balancing system for high capacity cranes

1974-09-23

1976-01-06

Spar, Robert J.

Traversing hoists

Overhead

Cable

212 8R, B66C 2372

Patent

active

039305830

ABSTRACT:
A high capacity crane which has a wheeled or tracked chassis carrying a support structure rotatable about a vertical axis and including a jib and a counter-jib. An arcuate beam centered on the axis of rotation is anchored to the ground and carries a connector movable along the beam to which connector the counter-jib is in turn anchored.

REFERENCES:
patent: 2139960 (1938-12-01), Kauffman
patent: 2589915 (1952-03-01), Wullschleger
patent: 3485383 (1969-12-01), Beduhn
patent: 3842984 (1974-10-01), Brown et al.
"The Amazing American Sky Horse 900 Series Crane" by Amer. Hoist and Derrick Co. 12/9/71.

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