Patent ID: 9615499
Date: 2017-04-11
CPC Classifications: A01B,A01C

Claim:
1. An agricultural machine transportable in a agricultural field, comprising: a frame; a plurality of farming related work units pivotally coupled to the frame; a number of cylinders coupled between the frame and each of the work units, each cylinder configured to raise and lower a corresponding work unit relative to the frame and to other work units to adjust a depth of the corresponding work unit; a fluid reservoir operably connected to each of the number of cylinders; a number of fluid flow valves operably connected between the fluid reservoir and each of the cylinders to control the flow of fluid between the reservoir and the cylinders; a position sensor associated with each cylinder and configured to measure a linear displacement of each cylinder and output a signal indicative of a depth of the work unit associated with the cylinder; and a controller operably connected to the position sensors and the fluid flow valves associated with each cylinder, the controller operable to selectively direct the flow of fluid between the reservoir and each valve automatically in response to the signal from the position sensor for the associated cylinder to selectively raise and lower each work unit relative to the frame independently of the other work units during transport of the agricultural implement through the agricultural field.