Earth scraper and ground support therefor

Details Earth scraper and ground support therefor Earth scraper and ground support therefor

1977-12-01

1983-09-06

Stouffer, Richard T.

Earth working

Automatic power control

Land leveller type

172414, 172625, A01B 622, E02F 376

Patent

active

044023685

ABSTRACT:
A surface grading device adapted to be towed over a surface to be graded, capable of self adjustment in accordance with a pre-established signal such as a laser beam, capable of grading cross sloping surfaces, capable of minimizing blade deflection caused by carrier wheels hitting a flaw in grade, and adaptable for highway towing along a single lane of a highway.

REFERENCES:
patent: 3009271 (1961-11-01), Kuehne et al.
patent: 3261118 (1966-07-01), Litherland
patent: 3376937 (1968-04-01), Groberg
patent: 3561538 (1971-02-01), Curlett et al.
patent: 3721461 (1973-03-01), Nelsen et al.
patent: 3953145 (1976-04-01), Teach
patent: 4031963 (1977-06-01), Poggemiller et al.

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