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Irrigation controller

  • US 5,363,290 A
  • Filed: 07/13/1993
  • Issued: 11/08/1994
  • Est. Priority Date: 07/18/1990
  • Status: Expired due to Fees
First Claim
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1. An improved irrigation controller for individually and automatically controlling water flow to a plurality of individual watering stations, which comprises:

  • (a) means for storing a programmed watering schedule which schedule is to be executed over a period of days, the schedule having at least one user selectable parameter of watering operation that may having a number of possible values up to a predetermined maximum number of values;

    (b) means for monitoring the passage of time and for controlling the operation of the individual watering stations in accordance with the stored watering schedule; and

    (c) a slide potentiometer for inputting into the stored watering schedule a plurality of possible values for the parameter, the slide potentiometer having a plurality of individual sliders each of which may be slid to a position corresponding to one particular value of the parameter which particular value is unique and is different from all the other values that may be set by any of the other sliders, the numbers of sliders corresponding to the maximum number of values allowed for the parameter, wherein the sliders are all movable in the same elongated slideway for ease of use and display, and wherein the slideway includes a starting zone in which all of the sliders can be received to select no value for the parameter, wherein a value for the parameter is input by a slider only when the slider is moved out of the starting zone.

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