Operative arm excavator including linkage generally...

Details Operative arm excavator including linkage generally... Operative arm excavator including linkage generally...

2006-10-17

2006-10-17

Underwood, Donald (Department: 3652)

Material or article handling

Vertically swinging load support

Shovel or fork type

C037S468000

Reexamination Certificate

active

07121784

ABSTRACT:
An operative arm of an earth moving machine includes a dipper stick having a distal end, a bucket coupled to the distal end of the dipper stick, a hydraulic actuator coupled to the dipper stick, and a linkage generally interposed between the bucket and the hydraulic actuator. The linkage includes the following items: (i) a first lever rotatably coupled to the dipper stick and the hydraulic actuator, (ii) a linear actuator rotatably coupled to the dipper stick, (iii) a second lever rotatably coupled to the first lever and the linear actuator, and (iv) a bucket lever interconnecting the second lever, the linear actuator and the bucket.

REFERENCES:
patent: 2004702 (1993-12-01), None

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