Ground surface contour modifying apparatus and method

Details Ground surface contour modifying apparatus and method Ground surface contour modifying apparatus and method

1990-11-30

1992-03-10

Crobin, David H.

Hydraulic and earth engineering

Earth treatment or control

273176H, 273DIG31, 405 36, 405229, E02D 2732, E02D 3500

Patent

active

050945696

ABSTRACT:
A ground surface contour modifying apparatus and method which includes a plurality of independent, selectively actuable hydraulic elements positioned below the surface of a defined area of ground. Selective actuation of the hydraulic elements enables modification of the contours of the overlying ground surface.

REFERENCES:
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patent: 3040411 (1962-06-01), Messenger
patent: 3343369 (1967-09-01), Polhamus
patent: 3455538 (1969-07-01), Vranian
patent: 3795180 (1974-03-01), Larsen
patent: 3908385 (1975-09-01), Daniel et al.
patent: 4191496 (1980-03-01), Becker
patent: 4978127 (1990-12-01), Juel

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