Interface system for a towed implement

Details Interface system for a towed implement Interface system for a towed implement

1991-04-05

1992-10-06

Taylor, Dennis L.

Earth working

Automatic power control

Draft responsive

172316, 172328, A01B 6300

Patent

active

051523477

ABSTRACT:
A towed implement with an implement cylinder may be coupled to the hitch of a tractor which includes a hydraulic pump, a hydraulic sump, a rockshaft cylinder for raising and lowering the hitch, a hitch control valve for controlling fluid flow to the rockshaft cylinder, a control unit for controlling the hitch control valve as a function of a sensed parameter signal and an operator generated command signal. A two-position, four-way selector valve selectively connects the hitch control valve to the implement cylinder and operates to automatically raise the hitch to its top position when the selector valve connects the hitch control valve to the implement cylinder. A manually operated four position, four-way selective control valve is connected between the selector valve and the implement cylinder and a towed implement position sensor is connected to the electronic control unit of the tractor hitch control system.

REFERENCES:
patent: 2974733 (1961-03-01), Fletcher
patent: 3463510 (1969-08-01), Van Sipe
patent: 3517943 (1970-06-01), Bunting et al.
patent: 3627053 (1971-12-01), Hook et al.
patent: 3630290 (1971-12-01), Williams et al.
patent: 3753467 (1973-08-01), Wilson
patent: 3791454 (1974-02-01), Koch et al.
patent: 4231432 (1980-11-01), Jennings
patent: 4637474 (1987-01-01), Leonard
patent: 4817730 (1989-04-01), Winter

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