Wavy coulter

  • US 5,649,602 A
  • Filed: 10/06/1995
  • Issued: 07/22/1997
  • Est. Priority Date: 10/06/1995
  • Status: Expired due to Term
First Claim
Patent Images

1. A tillage tool, comprising:

  • an implement frame adapted to move in a direction of travel over soil to be tilled;

    a soil engaging coulter operably attached to the frame and positioned forward of a no-till implement operably attached to the frame, the coulter including a circular body, the body having a peripheral edge, a center portion, and a radius;

    a plurality of waves formed in the body, each wave including a crest and an adjacent valley defining a wave width at the peripheral edge disposed perpendicular to the direction of travel, each crest and adjacent valley extending back from the peripheral edge in respective adjacent lines disposed at a predetermined acute angle with respect to the radius; and

    a means for rotatably attaching the center portion of the coulter body to the frame such that a leading peripheral edge of the coulter rotates in a downward direction as it enters the soil, thereby positioning the lines of each crest and valley to enter the soil at a nearly vertical orientation, whereby compaction of the soil is minimized.

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