Draft load measurement and control

Details Draft load measurement and control Draft load measurement and control

1987-10-26

1989-02-21

Gruber, Felix D.

Boots, shoes, and leggings

172 7, 340684, 364508, 364556, 36455101, G06F 1520, A01B 63112

Patent

active

048071366

ABSTRACT:
A tractor coupled to a draft implement through at least one link arm of a hydraulic lift assembly having a lift rod coupled between each link arm and a hydraulic cylinder for raising and lowering the draft implement. A force sensor is coupled to a link arm for providing a measurement of the total force exerted on the link arm. Electrical circuitry provides a measurement of the actual draft force by correcting the total force measurement for lift forces transmitted to the link arm through the corresponding lift rod. A feedback or draft control system is also provided for adjusting the depth of the draft implement in inverse relation to the corrected measurement of actual draft force.

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patent: 4503916 (1985-03-01), Wiegardt
patent: 4518044 (1985-05-01), Wiegardt et al.
patent: 4658908 (1987-04-01), Hannukainen
patent: 4715012 (1987-12-01), Mueller, Jr.

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