Leak sensing alarm and supply shut-off apparatus
First Claim
Patent Images
1. For use with a liquid supply line having a cutoff valve associated therewith, apparatus comprising a detector for detecting the presence of leaked moisture indicative of a fault condition;
- an actuator coupled to said cutoff valve and detector and operable to actuate said cutoff valve to an "off" position in response to a fault condition;
first visible condition indicator means for indicating that the apparatus is in an armed state;
second visible condition indicator means for indicating that the detector senses a fault condition, said second condition indicator means being responsive to said detector;
electronic circuit means operatively interconnecting said first and said second condition indicator means, whereby sensing of a fault condition deactivates said first condition indicator means and activates said second condition indicator means; and
a manually operable switch for selectively manually operating said cutoff valve, said manually operable switch being operatively coupled to said first and second condition indicator means to activate both said first and second condition indicator means when said manually operable switch is in a closed condition so as to indicate the condition of said manually operable switch.
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Abstract
Apparatus for sensing the presence, in an area served by a water supply line, of unwanted water indicative of a malfunction. The apparatus responds to the sensing of water by operating a remote solenoid-actuated valve, to shut off the water supply. Three operative conditions of the apparatus, "standby", "alarm" and "manual remote shut off", are provided, enabling an operator to selectively actuate the valve independently of the sensor.
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Citations
9 Claims
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1. For use with a liquid supply line having a cutoff valve associated therewith, apparatus comprising a detector for detecting the presence of leaked moisture indicative of a fault condition;
- an actuator coupled to said cutoff valve and detector and operable to actuate said cutoff valve to an "off" position in response to a fault condition;
first visible condition indicator means for indicating that the apparatus is in an armed state;
second visible condition indicator means for indicating that the detector senses a fault condition, said second condition indicator means being responsive to said detector;
electronic circuit means operatively interconnecting said first and said second condition indicator means, whereby sensing of a fault condition deactivates said first condition indicator means and activates said second condition indicator means; and
a manually operable switch for selectively manually operating said cutoff valve, said manually operable switch being operatively coupled to said first and second condition indicator means to activate both said first and second condition indicator means when said manually operable switch is in a closed condition so as to indicate the condition of said manually operable switch. - View Dependent Claims (2, 3, 4)
- an actuator coupled to said cutoff valve and detector and operable to actuate said cutoff valve to an "off" position in response to a fault condition;
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5. For use with a liquid supply line having a cutoff valve associated therewith, apparatus comprising a detector for detecting the presence of leaked moisture indicative of a fault condition;
- an actuator coupled to the cutoff valve;
switch means responsive to said detector for energizing said actuator to close the cutoff valve in response to detection of a fault condition a manually operable switch for manually remotely operating the cutoff valve independently of said switch means;
first condition indicator means for indicating that the apparatus is in an armed state;
second condition indicator means for indicating detection of a fault condition;
said second condition indicator means being operatively coupled to and responsive to said detector; and
electronic circuit means operatively interconnecting said detector and said first and said second conditioner indicator means so that sensing a fault condition deactivates said first condition indicator means and activates said second indicator means, said first and second condition indicator means being disposed in said manually operable switch. - View Dependent Claims (6, 7, 8, 9)
- an actuator coupled to the cutoff valve;
Specification