FRONT LOADING HYDRAULIC EXCAVATOR
There is disclosed a hydraulic excavator having linkage providing for a
front loading arrangement whereby the bucket opens away from the vehicle.
The linkage is arranged to maintain a substantially fixed preselected
attitude of the bucket with respect to the boom upon movement of the stick
about its pivotal connection to the boom. Further control means are
provided to maintain a preselected attitude of the bucket with respect to
a fixed plane upon movement of the boom.
Gill; Stephen H. (Aurora, IL), Knell; Harvey A. (Joliet, IL), Tucker, III; Joseph M. (Aurora, IL) |
Caterpillar Tractor Company
August 24, 1972|