Grade averaging apparatus

Details Grade averaging apparatus Grade averaging apparatus

1978-09-28

1980-07-22

Byers, Jr., Nile C.

Road structure, process, or apparatus

Apparatus

Automatic control

180 41, 280 6R, 299 39, E01C 1900

Patent

active

042137195

ABSTRACT:
An improved portable grade averaging apparatus comprising an averaging bar assembly that serves as an elevation control reference for a track supported road working machine. One end of an averaging bar member is pivotally supported by a forward steering drive track assembly that serves as a forward walking beam, and the other end of the averaging bar member is pivotally supported by a rear track assembly that serves as a rear walking beam. A grade sensor assembly supported on one side by the road working machine contactingly engages the averaging bar member for directing the elevation of one side of the road working machine to establish the elevation of a working tool supported by the road working machine.

REFERENCES:
patent: 2962979 (1960-12-01), McCormick
patent: 3272099 (1966-09-01), Drake
patent: 3323427 (1967-06-01), Schrimper
patent: 3414327 (1968-12-01), Austin
patent: 3595144 (1971-07-01), Rink
patent: 3771892 (1973-11-01), Munyon
patent: 3807887 (1974-04-01), Tate
patent: 3811787 (1974-05-01), Beaty
patent: 3846035 (1974-11-01), Davin
patent: 3879149 (1975-04-01), Smith
patent: 4029165 (1975-06-01), Miller

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