Work vehicle having variable curvature blade assembly

Details Work vehicle having variable curvature blade assembly Work vehicle having variable curvature blade assembly

1976-05-17

1977-04-26

Johnson, Richard J.

Earth working

Mounting for pushed tool at end of motor vehicle

Transversely mounted blade

172806, 37 50, E02F 376

Patent

active

040195872

ABSTRACT:
A work vehicle has a blade assembly formed of upper, middle, and lower generally horizontally extending blade portions that are controllably, pivotally movable for varying the general curvature of the working surface of the blade assembly.

REFERENCES:
patent: 1926011 (1933-09-01), Soule
patent: 2160973 (1939-06-01), Litchy
patent: 3039542 (1962-06-01), Vonville
patent: 3157099 (1964-11-01), Ulrich
patent: 3653450 (1972-04-01), Rockwell
patent: 3853181 (1974-12-01), Yoshizaki

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