Draft control system for agricultural tractor

Details Draft control system for agricultural tractor Draft control system for agricultural tractor

1982-06-21

1984-03-27

Stouffer, Richard T.

Earth working

Automatic power control

Draft responsive

A01B 63112

Patent

active

044388187

ABSTRACT:
A draft control system of the type in which a mechanical spring is employed to balance the draft forces of an implement trailed behind the tractor so as to correct the working depth of the implement in accordance with changes in draft forces, in which the feature is the use of a hydraulic force-amplifying device to increase the responsiveness of the system so as to minimize the forces required to effectuate regulation of the working depth of the implement.

REFERENCES:
patent: 2887167 (1959-05-01), Heitshu et al.
patent: 2921638 (1960-01-01), Du Shane
patent: 2940530 (1960-06-01), Du Shane
patent: 3022830 (1962-02-01), Hess
patent: 3142342 (1964-07-01), Brudnak, Jr. et al.
patent: 3990520 (1976-11-01), Koch et al.
patent: 4057109 (1977-11-01), Nelson

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