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Irrigation signaling device

  • US 5,825,295 A
  • Filed: 04/08/1997
  • Issued: 10/20/1998
  • Est. Priority Date: 04/08/1997
  • Status: Expired due to Fees
First Claim
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1. A device for signaling a predetermined soil moisture condition, the device comprising:

  • a switching tensiometer that closes a switch when the moisture content of the soil reaches a predetermined level;

    a power source connected to the switching tensiometer; and

    a signal comprising a signal flag operable between a retracted position and an extended signal position, the flag being resiliently biased to its extended signal position, a latch for releasably securing the flag in its retracted position, and a release electrically connected to the switching tensiometer so that when the predetermined level is reached and the switching tensiometer closes the switch, the power source is connected to the release to release the latch and allow the signal flag to operate to its extended signal position.

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