E - Fixed Constructions – 02 – F
Patent
E - Fixed Constructions
02
F
294/20
E02F 9/20 (2006.01) B66C 3/12 (2006.01) E02F 3/47 (2006.01)
Patent
CA 1120076
AN EXCAVATOR WITH A CLAMSHELL BUCKET HAVING MAGNIFIED VERTICAL STROKE ABSTRACT OF THE DISCLOSURE An excavator having a base structure, a boom pivotally supported at its lower end by the base structure, an arm pivotally supported near its root end by the upper end of the boom, and a clamshell bucket suspended from the tip end of the arm by pulley and rope systems extended along the arm and the boom so as to provide more parts of the ropes to the parts extended between the tip end of the arm and the bucket as the boom is more inclined downward.
330276
Hewson Donald E.
Yoritomi Ryutaro
LandOfFree
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