Disc tiller road grader system and method

Details Disc tiller road grader system and method Disc tiller road grader system and method

2007-10-10

2009-10-20

Pezzuto, Robert E (Department: 3671)

Earth working

Scraper between front and rear ground supports of vehicle

With diverse tool or portion

C172S272000

Reexamination Certificate

active

07604069

ABSTRACT:
Groundbreaking equipment utilizes a gang of discs and a road grader to provide a consistent depth of tilling without skipping areas of ground. In one embodiment, the road grader weighs ten to twenty tons, has articulating tandem rear wheels, front steering wheels, and hydraulic vertical and horizontal angle blade adjusters, whereby the disc tillers may be oriented in a manner for tilling at a desired depth and orientation, and the road grader features can be adjusted to counteract forces produced by the gang of discs. Mud scrapers are preferably provided for individual discs on an opposite side of the gang of discs with respect to the grader blade. In one embodiment, a hitch mechanism with stop surfaces is provided behind the grader blade for mounting and/or removal of the gang of discs to the grader blade within minutes without need of special tools.

REFERENCES:
patent: 98647 (1870-01-01), Vairin
patent: 823872 (1906-06-01), Jones
patent: 1996676 (1935-04-01), Hargrave
patent: 2036598 (1936-04-01), Miller et al
patent: 2188435 (1940-01-01), Hargrave
patent: 4106645 (1978-08-01), Janish
patent: 4643261 (1987-02-01), Long
patent: 6068065 (2000-05-01), Mehew et al.
patent: 6293354 (2001-09-01), Garratt et al.

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