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Cultivator

  • US 5,398,770 A
  • Filed: 05/07/1992
  • Issued: 03/21/1995
  • Est. Priority Date: 05/07/1992
  • Status: Expired due to Fees
First Claim
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1. A chisel cultivator, comprising:

  • a substantially rigid frame;

    a chisel coupled to said frame so that said chisel penetrates the ground surface during operation of the cultivator for breaking up sub-surface soil and urging the broken up sub-surface soil upwardly toward the surface;

    heave limiter means mounted to said frame in a fixed spatial relationship to said chisel so that said heave limiter means presses downwardly on and travels over the surface of the ground during operation of the cultivator for cooperating with said chisel to crush the broken up soil urged upwardly by said chisel and for maintaining the surface of the ground substantially-level following passage of said chisel therethrough;

    at least one sweep member mounted to said frame in a fixed spatial relationship to said chisel and located behind and aligned with said chisel relative to the direction of travel of the chisel cultivator, and extending outwardly of a line extending in the direction of operation of the chisel cultivator in a plane substantially orthogonal to the longitudinal axis of said chisel, said chisel configured to create sufficient downward force so that said at least one sweep member travels below the surface of the ground during operation of the cultivator; and

    a coulter mounted to the chisel cultivator ahead of said heave limiter means relative to the direction of travel of the chisel cultivator for cutting through trash lying on the surface of the ground during operation of the chisel cultivator.

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