Road grader

Details Road grader Road grader

1984-06-04

1986-02-04

Leppink, James A.

Road structure, process, or apparatus

Apparatus

Screed or drag

172787, 1727995, 1726845, E01C 1922

Patent

active

045682194

ABSTRACT:
A drag-type road grader including a skewable frame and a plurality of blade assemblies extending transversely across the frame. A tongue assembly is mounted on the frame and includes hydraulic cylinders for skewing the frame to alternative parallelogram-shaped configurations whereby the blade assemblies are angled with respect to the direction of travel. Retractable wheel assemblies are provided for transporting the grader in a non-working mode.

REFERENCES:
patent: 981437 (1911-01-01), Linder
patent: 1185090 (1916-05-01), Hall
patent: 1303415 (1919-05-01), Thurston
patent: 1476263 (1923-12-01), Martin
patent: 1773431 (1930-08-01), Mosel
patent: 1845324 (1932-02-01), Noffsinger et al.
patent: 2348445 (1944-05-01), Bayer
patent: 2593880 (1952-04-01), Heavilin
patent: 3435546 (1969-04-01), Iverson
patent: 3883259 (1975-05-01), Burg et al.

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