Signals and indicators – Indicators – Temperature responsive or compensating means
Patent
1984-07-12
1986-01-14
Yasich, Daniel M.
Signals and indicators
Indicators
Temperature responsive or compensating means
374160, G01K 102, G01K 114
Patent
active
045639736
ABSTRACT:
A heat detection apparatus comprising a display face having a protruding member extending therefrom disposed in a fixed frame means and connected to a tension means in a tensioned mode, said protruding member and display face maintained in a first position under tension by a solid retention means disposed with the distal end of said protruding member in communication with said protruding member and frame means with said retention means meltable at an elevated temperature, and wherein melting of said retention means permits relaxation of said tension means resulting in said protruding member and display face moving to a second position under relaxation, and further wherein said display face displays a first indicator of non-elevated temperature in the first position and a second indicator of elevated temperature in the second position. Also disclosed is the heat detection apparatus above described in combination with a barrier, as well as a method of determining at a first side of a barrier the presence of an elevated temperature at a second side of said barrier through utilization of said heat detection apparatus.
REFERENCES:
patent: 1443786 (1923-01-01), Dolph
patent: 2964947 (1960-12-01), DeJong
patent: 3244137 (1966-04-01), Garvey
patent: 3382840 (1968-05-01), Pabst
patent: 3656452 (1972-04-01), Kliener
patent: 3971333 (1976-07-01), Levy
patent: 4104916 (1978-08-01), Hofer
Bennett Raymond E.
Stull Dean P.
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