Patent ID: 8090507
Filing Date: 2012-01-03
Classification: A01B

Abstract:
1. A pitch plow, comprising: a frame and a shank that is pivotally mounted to said frame, said shank defining a cutting edge, wherein the pitch of said shank relative to earth causes a change in the elevation of said cutting edge; a control system that is adapted to control an elevation of said cutting edge, said control system comprising a hydraulic actuator between said shank and said frame and an electronic control, wherein said hydraulic actuator is adapted to pivotally adjust said shank with respect to said frame, wherein said electronic control is adapted to control said hydraulic actuator; wherein said electronic control comprises a processor and at least one sensor, said at least one sensor adapted to measure current elevation of said cutting edge relative to earth and to provide a shank GNS location input to said processor, said at least one sensor further adapted to measure current pitch of said shank relative to earth and to provide a shank current pitch input to said processor, wherein said processor produces an output from said inputs, said output adapted to adjust said hydraulic actuator in a manner that affects the pitch of said shank relative to earth, wherein said electronic control combines the current elevation of said cutting edge relative to earth, a desired elevation of said cutting edge relative to earth and current pitch of said shank relative to earth to produce a desired pitch of said shank relative to earth and wherein said electronic control produces said output as a function of the desired pitch of said shank relative to earth.