Method and apparatus for laser beam control of backhoe digging d

Details Method and apparatus for laser beam control of backhoe digging d Method and apparatus for laser beam control of backhoe digging d

1979-04-09

1980-11-04

Knowles, Allen N.

Material or article handling

Vertically swinging load support

Shovel or fork type

37DIG1, 414786, E02F 920

Patent

active

042317002

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.

REFERENCES:
patent: 3395816 (1968-08-01), Hodges et al.
patent: 3550794 (1970-12-01), Suverkrop
patent: 3584751 (1971-06-01), Bellart
patent: 3997071 (1976-12-01), Teach
patent: 4034490 (1977-07-01), Teach
patent: 4050171 (1977-09-01), Teach
patent: 4107859 (1978-08-01), Keith
patent: 4129224 (1978-12-01), Teach

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