Method and device for maintaining tools at a level

Details Method and device for maintaining tools at a level Method and device for maintaining tools at a level

1981-11-10

1986-04-29

Crowder, Clifford D.

Excavating

Peat excavators

37 72, 37DIG1, E02F 388

Patent

active

045847843

ABSTRACT:
A tool is controlled below a water surface by carrying out a level comparison between a level-fixed measuring element postioned on land and a level-varying measuring element belonging to the tool and by adjusting the level of the tool with respect to a floating body in dependence upon said comparison.

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patent: 3826023 (1974-07-01), Dekoning et al.
patent: 3887012 (1975-06-01), Scholl et al.
patent: 3890840 (1975-06-01), Malloy
Oostrum, "Geprogrammeerdbaggeren", DeIngenieur, vol. 87, No. 27, 7/1975, pp. 545-557.

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