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Ground contact implement soil penetration depth control

  • US 4,913,070 A
  • Filed: 03/06/1989
  • Issued: 04/03/1990
  • Est. Priority Date: 04/08/1988
  • Status: Expired due to Fees
First Claim
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1. An apparatus comprising:

  • a frame;

    at least one depth gauging wheel;

    mounting means connecting said at least one depth gauging wheel to said frame so that said at least one depth gauging wheel is both translocationally movable with respect to said frame and rotatable;

    at least one ground contact implement connected to said frame;

    adjustable downpressure means connected to said frame for varying the position of said at least one ground contact implement with respect to said at least one depth gauging wheel in response to changes in downpressure;

    control means, operably connected to said mounting means and said frame and said adjustable downpressure means, for detecting translocational movement of said at least one depth gauging wheel and mounting means with respect to said frame and for adjusting downpressure exerted by said adjustable downpressure means in response to said detected translocational movement of said at least one depth gauging wheel and mounting means with respect to said frame so as to maintain a substantially constant difference in relative elevations of said at least one ground contact implement and said at least one depth gauging wheel;

    wherein said mounting means includes a subframe connected to said at least one depth gauging wheel and pivotably connected directly to said frame;

    a subframe strut, figidly connected to said subframe and connected to said control means;

    a connecting link, rigidly connected to said frame, and connected to said control means; and

    further comprising a spring flexibly linking said subframe strut to said connecting link.

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