Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1980-02-07
1981-12-08
Caldwell, Sr., John W.
Communications: electrical
Condition responsive indicating system
Specific condition
73 40, 340620, G08B 2100
Patent
active
043050689
ABSTRACT:
A detector system for detecting leaks in tanks and pipelines which includes a sensor containing a fluid with said sensor degradable on contact with the liquid, gas or vapor which is being monitored wherein when said sensor degrades the fluid flows therefrom with a reduction in the fluid level causing activation of an alarm system.
REFERENCES:
patent: 358949 (1887-03-01), Stern
patent: 3505820 (1970-04-01), Draper et al.
patent: 3753257 (1973-08-01), Arnold
patent: 3868664 (1975-02-01), Hill
patent: 3995472 (1976-12-01), Murray
Caldwell Sr. John W.
Myer Daniel
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