Earth working – Processes
Patent
1982-03-03
1986-04-29
Stouffer, Richard T.
Earth working
Processes
91 32, 91 37, 172 6, 172 38, A01B 7900, A01B 6906, A01B 6502
Patent
active
045850712
ABSTRACT:
A retractable tool apparatus is adapted to be mounted on a movable vehicle for working the area around and between objects in a row. The tool apparatus includes an extendable and retractable outrigger arm attachable on one of its ends to the vehicle. A work tool is mounted on the other end of the outrigger arm. An electro-hydraulic control system controls the retraction of the outrigger arm. This control system includes sensors in the form of a pair of wands mounted on the outrigger arm to sense objects in proximity to the work tool before the work tool contacts the objects. The first wand activates the control system upon contact with an object to retract the work tool. The second wand holds the control system in its retraction mode upon contact with the object even after the first wand has cleared the object.
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Anderson Jack F.
Melrose Clayton
Anderson Jack F.
Stouffer Richard T.
Young James R.
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