Automatic control system for maintaining blade in predetermined

Details Automatic control system for maintaining blade in predetermined Automatic control system for maintaining blade in predetermined

1979-05-11

1981-06-16

Stouffer, Richard T.

Earth working

Automatic power control

Land leveller type

37DIG20, 250203R, E02F 376, E02F 385

Patent

active

042731968

ABSTRACT:
A beam receiver secured to an upper portion of a blade of an earth working equipment can rotate in a horizontal plane and move in a vertical direction and, accordingly, can catch a laser beam from a beam projector regardless of a direction of the equipment. When the beam has been deviated out of the beam receiver, the direction of the deviation is detected so that the beam can be received by the beam receiver again. The height of the beam receiver relative to the blade can be adjusted and the level of the blade can thereby be controlled very accurately.

REFERENCES:
patent: 2924768 (1960-02-01), Farrand et al.
patent: 3887012 (1975-06-01), Scholl et al.
patent: 3931515 (1976-01-01), Parkin
patent: 4157118 (1979-06-01), Suganami et al.
patent: 4162708 (1979-07-01), Johnson

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