×

Agricultural planter

  • US 5,709,271 A
  • Filed: 09/22/1995
  • Issued: 01/20/1998
  • Est. Priority Date: 06/08/1993
  • Status: Expired due to Term
First Claim
Patent Images

1. An apparatus for generating a signal indicative of the hardness of subjacent soil in a field, said apparatus comprising:

  • a soil treating implement having a first frame;

    a towing frame;

    means for attaching the soil treating implement to the towing frame for movement of the soil treating implement vertically relative to the towing frame within a range;

    sensing means on at least one of the first and towing frames for engaging subjacent soil and generating a signal indicative of the hardness of subjacent soil as the one of the first and towing frames moves relative to subjacent soil,wherein the sensing means includes a sensing element that rolls along subjacent soil relative to which the frame is moved,said apparatus further including means acting between the towing frame and soil treating implement for developing a variable vertical force on the soil treating implement,there being means on the force developing means responsive to the signal from the signal generating means for causing a vertical force to be developed by the force developing means on the soil treating implement.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×