Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1986-02-19
1988-03-01
Swann, III, Glen R.
Communications: electrical
Condition responsive indicating system
Specific condition
G08B 1704
Patent
active
047289406
ABSTRACT:
A pneumatic temperature sensitive system has a hollow detector member laid in a loop for instance in the room. The detector member is pressurized so that when the critical temperature is reached the detector member bursts and its interior space is depressurized. The detector member is connected with a pressure sensor to produce an electrical or other signal when the pressure falls so that further equipment may be activated.
REFERENCES:
patent: 3014206 (1961-12-01), Slavin
patent: 4055844 (1977-10-01), Hornbostel, Jr.
Ferf-Jentink A. C.
Stoll Kurt
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