Traversing hoists – Overhead – Cable
Patent
1977-07-07
1979-05-08
Paperner, L. J.
Traversing hoists
Overhead
Cable
52115, 52721, 212144, 403263, 414727, E02F 338
Patent
active
041531671
ABSTRACT:
A shovel linkage for a hydraulic excavator includes a cross tube having pivot joints, and actuating cylinders for the linkage connected to said pivot joints thereon whereby forces imparted to the linkage by the actuating cylinders will be directly through the center of the cross tube, avoiding bending moments in the linkage.
The cross tube has an internal diametrical member in line with the pivot joints and the actuating cylinders to withstand and transmit the forces imparted by the actuating cylinders.
REFERENCES:
patent: 3104771 (1963-09-01), Stilley
patent: 3254780 (1966-06-01), Midtbo
patent: 3327385 (1967-06-01), Shaver
patent: 3784162 (1974-01-01), Channell et al.
patent: 3877544 (1975-04-01), McCollum
Caterpillar Tractor Co.
Paperner L. J.
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