Method and apparatus for laser beam control of backhoe digging depth
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United States of America Patent
Stats
-
Nov 4, 1980
Grant Date -
N/A
app pub date -
Apr 9, 1979
filing date -
Apr 9, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
This invention provides a method and apparatus for controlling the digging depth of the bucket of a backhoe or an excavator so as to move the digging edge of the backhoe bucket in a plane parallel to an overhead reference plane defined by a rotating laser beam. The detecting means for the laser beam is mounted on a medial portion of the downreach boom and the control of the position of the bucket is accomplished by moving the outreach boom of the backhoe relative to the supporting platform so as to maintain the detecting means on the downreach boom in a fixed relationship with respect to the reference plane defined by the rotating laser beam.
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