06701857 is referenced by 105 patents.

A method and apparatus for automatically adjusting the down pressure exerted by an actuating device on a seed channel opener of a planting implement in order to maintain the seed channel opener at a predetermined depth. The method and apparatus includes a depth control device which senses the load on the depth control wheel of the planting implement and transmits a sensed load output to an electronic control unit. The electronic control unit includes a micro-controller which receives, monitors and analyzes the sensed load output and compares it to the predetermined depth value. When the micro-controller detects a change between the predetermined depth value and sensed output value, a signal is transmitted to a regulating control valve which adjusts the down pressure exerted by the actuating device on the seed channel opener to maintain the proper cutting depth.

Title
Depth control device for planting implement
Application Number
10/345346
Publication Number
6701857 (B1)
Application Date
January 16, 2003
Publication Date
March 9, 2004
Inventor
James P LeClaire
1256 Eleanor Ave., St. Paul
MN, US
Chris Nelson
8220 Stevens Ave. South, Bloomington
MN, US
Lynn David Jensen
20318 444th Ave., Lake Preston
SD, US
Agent
Peter A Bursari
US
IPC
A01C 15/00
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