PARALLEL CYLINDER DEPTH CONTROL

Hydraulic lift cylinders on a transversely extending implement frame, such as a multi-section hinged implement, are connected by valve and conduit structure to operate as single acting cylinders in parallel during an automatic depth control mode for individual cylinder control. An operator control v...

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Bibliographische Detailangaben
1. Verfasser:	DAVID CARL WINTER
Format:	Patent
Sprache:	eng
Schlagworte:	AGRICULTURE ANIMAL HUSBANDRY FISHING FORESTRY HUMAN NECESSITIES HUNTING PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES ORIMPLEMENTS, IN GENERAL SOIL WORKING IN AGRICULTURE OR FORESTRY TRAPPING
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Beschreibung
Zusammenfassung:	Hydraulic lift cylinders on a transversely extending implement frame, such as a multi-section hinged implement, are connected by valve and conduit structure to operate as single acting cylinders in parallel during an automatic depth control mode for individual cylinder control. An operator control valve and depth sensing valve permit the operator to change to a fast raise/fast lower mode wherein flow control structure causes the lift cylinders to operate substantially in series for raising and lowering the implement in level fashion across its width to and from a transport position.