Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1980-08-25
1983-02-15
Caldwell, Sr., John W.
Communications: electrical
Condition responsive indicating system
Specific condition
73 491, 200 6105, 340605, 340620, G08B 2100
Patent
active
043743790
ABSTRACT:
A moisture sensing device for application to water pipes and the like utilizes a pair of closely spaced electrical conductors partially positioned in an elongated flexible insulating member which can be adhesively affixed to a water pipe or the like with the spaced partially exposed electrical conductors in oppositely disposed relation to the pipe. An alarm actuating circuit is connected with the spaced conductors and arranged to initiate an alarm when moisture bridges the closely spaced conductors.
REFERENCES:
patent: 3020528 (1962-02-01), Swanson, Jr. et al.
patent: 3677085 (1972-07-01), Hayakawa
patent: 3732556 (1973-05-01), Caprillo et al.
Caldwell Sr. John W.
Myer Daniel
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