Earth working – Automatic power control – Draft responsive
Patent
1981-02-02
1984-01-24
Stouffer, Richard T.
Earth working
Automatic power control
Draft responsive
7386269, A01B 63112
Patent
active
044270755
ABSTRACT:
An electrohydraulic control device for a lifting unit of an agricultural machine having a frame and a control rod pivotally secured to the frame by a fixed pivot pin, includes a transformer-type pick-up unit arranged in a well formed along the central axis of the pivot pin and cooperating with magnetically soft walls of the pivot pin to detect magnetic changes resulting from the load variations.
REFERENCES:
patent: 3246701 (1966-04-01), Schulz
patent: 3903739 (1975-09-01), Kolavcic
patent: 3994348 (1976-11-01), Schowalter
patent: 4088013 (1978-05-01), Dahle et al.
patent: 4271910 (1981-06-01), Schafer
Robert & Bosch GmbH
Stouffer Richard T.
Striker Michael J.
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