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Override control system for an automatic sprinkler system

  • US 5,375,617 A
  • Filed: 06/01/1994
  • Issued: 12/27/1994
  • Est. Priority Date: 06/01/1994
  • Status: Expired due to Fees
First Claim
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1. An override control system for an automatic sprinkler system of the type having a control box with a timer for turning on and off at least one sprinkler valve, each said valve having a valve line which connects to a common line, said override control system, comprising:

  • a probe assembly, comprising;

    a) a probe support;

    b) a probe comprising spaced apart electrically conductive members supported by said probe support; and

    c) a removable reservoir connectable to said probe support for containing said probe for above ground support while said probe assembly is being used above the ground and being removable so that said electrically conductive members are in direct contact with ground dirt when said reservoir is removed and said members are positioned beneath the ground; and

    ,an electrical circuit positioned between each said valve line and said common line, said electrical circuit including a relay system wherein if moisture between said electrically conductive members is above a predetermined threshold said relay system of said electrical circuit will be activated inhibiting sprinkler operation and wherein if moisture between said electrically conductive members is below said predetermined threshold, said relay system will not energize, thereby allowing said sprinkler system to operate normally.

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