Agricultural system
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United States of America Patent
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Aug 8, 2017
Issued Date -
N/A
app pub date -
Sep 18, 2015
filing date -
Nov 7, 2014
priority date (Note) -
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Abstract
A hydraulic control system for controlling the down force on an agricultural implement comprises a hydraulic cylinder containing a movable ram, a source of pressurized fluid coupled to the hydraulic cylinder on a first side of the ram by a first controllable valve, a fluid sump coupled to the hydraulic cylinder on the first side of the ram by a second controllable valve, and an electrical controller coupled to the valves for opening and closing the valves. The valves may be self-latching valves that remain in an open or closed position until moved to the other position in response to a signal from the controller.
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