Water shut-off valve and leak detection system

  • US 5,971,011 A
  • Filed: 02/21/1998
  • Issued: 10/26/1999
  • Est. Priority Date: 02/21/1998
  • Status: Expired due to Term
First Claim
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1. A water shut-off and leak detection system for use with a conduit, comprising:

  • (a) a microprocessor including a program memory and an alterable data memory;

    (b) an elapsed time clock coupled to said microprocessor, said elapsed time clock adapted to be reset by said microprocessor;

    (c) a primary setting consisting of a predetermined quantity of water and a predetermined period of elapsed time, said primary setting supplied to said microprocessor;

    (d) a valve adapted to be disposed intermediate said conduit, said valve including a first position adapted to permit the flow of water therein to occur and a second position adapted to prevent the flow of water therein, and including means for electrically connecting said microprocessor to said valve, said means for electrically connecting including means for urging said valve from said first position to said second position in response to a control signal from said microprocessor; and

    (e) a flowmeter operably attached to said valve, said flowmeter adapted to provide a continuous indication of the rate of fluid flow to said microprocessor;

    wherein said control signal is generated by said microprocessor in response to a continuous flow of water exceeding said predetermined quantity of water within said predetermined period of time,and wherein said elapsed time clock is reset to zero to begin accumulating anew subsequent to accumulating a duration of time equal to said predetermined period of time during a continuous flow of water that has not exceeded said predetermined quantity of water within said predetermined period of time and correspondingly, said quantity of fluid flow is reset to zero to begin accumulating anew when said elapsed time clock is reset to zero.

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