Patent ID: 8814474
Filing Date: 2014-08-26
Classification: E02F,F16L

Abstract:
1. A pitch plow, comprising: a frame; a shank pivotally mounted to said frame at a pitch pivot, said shank defining a cutting edge, wherein an orientation of said shank relative to earth causing a change in the elevation of said cutting edge such that depth of the pitch plow is controlled by pitch with rotation in a first direction at the pitch pivot increasing depth of the pitch plow and rotation in a second direction opposite of the first direction at the pitch pivot decreasing depth of the pitch plow; and a boot extending generally along said shank, said boot having an in-feed at an upper portion thereof and a discharge at a lower portion thereof, wherein said boot includes a generally straight central portion extending downwardly and forwardly and a curve portion between said straight central portion and said discharge, wherein the curved portion extends downwardly and rearwardly from the generally straight central portion; wherein in a depth decreasing position, said discharge is positioned such that a vertical axis, said vertical axis perpendicular with earth horizontal, passing through said pitch pivot and said generally straight central portion of the boot is rearward of the discharge when the shank is pivoted to decrease depth of the pitch plow; wherein in a depth increasing position, said discharge is positioned such that the vertical axis passing through said pitch pivot and said generally straight central portion of the boot is forward of the discharge when the shank is pivoted to increase depth of the pitch plow.