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Method and apparatus for placing dry or liquid materials into the soil subsurface without tillage tools

  • US 5,605,105 A
  • Filed: 10/17/1994
  • Issued: 02/25/1997
  • Est. Priority Date: 10/17/1994
  • Status: Expired due to Term
First Claim
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1. In turf maintenance apparatus, the improvement comprising:

  • an injection head for directing periodic jets of liquid and additive into the ground as the apparatus is moving along a path of travel;

    a liquid supply system for supplying pressurized liquid to the injection head;

    an additive supply system for introducing additive to the liquid within the injection head; and

    a control system for causing said jets to discharge from the injection head at spaced intervals along said path of travel of the apparatus,said control system including a controller, a distance sensor operable to provide ground traversing distance information to the controller, and a valve operable by the controller to admit successive bursts of pressurized liquid into the injection head as a function of the distance information provided to the controller by said sensor,said additive supply system including a dispenser for the additive and a mechanism for metering the additive from the dispenser at a predetermined rate,said metering mechanism being operable to deliver additive to the nozzle at a variable rate of delivery,said controller being operably coupled with said metering mechanism for driving the metering mechanism at a rate that varies as a function of distance traversed by the apparatus.

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