Hydraulic control system for tractor

Details Hydraulic control system for tractor Hydraulic control system for tractor

1977-01-05

1978-04-25

Stouffer, Richard T.

Earth working

Automatic power control

Draft responsive

172 7, A01B 63112

Patent

active

040858065

ABSTRACT:
Hydraulic control system including a bypass provided in an intermediate portion of an oil passage extending from a position control valve to a hydraulic actuator for raising and lowering a working implement. A draft control valve disposed in the bypass controls the pressure of oil flowing into the bypass, in response to the displacement of a member for sensing the draft force of the working implement.

REFERENCES:
patent: 3235010 (1966-02-01), North
patent: 3331447 (1967-07-01), Simak
patent: 3396803 (1968-08-01), Corni
patent: 3888315 (1975-06-01), Elfes et al.

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