Device for detecting the exceeding of a temperature threshold

Device for detecting the exceeding of a temperature threshold incorporating a first mobile part (5) in a sealed chamber (4) containing a material melting at the temperature of the threshold and a second mobile part (8) outside the chamber. In the armed position, the two parts exert forces on one ano...

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Bibliographic Details
Main Authors TOUPIN; JOSEPH F, DOUESNEL; XAVIER
Format Patent
LanguageEnglish
Published 12.03.1991
Subjects
BLASTING
COLD ROOMS
COMBINED HEATING AND REFRIGERATION SYSTEMS
COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHERSUBCLASS
HEAT PUMP SYSTEMS
HEATING
ICE-BOXES
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
LIGHTING
LIQUEFACTION SOLIDIFICATION OF GASES
MANUFACTURE OR STORAGE OF ICE
MEASURING
MEASURING QUANTITY OF HEAT
MEASURING TEMPERATURE
MECHANICAL ENGINEERING
PHYSICS
REFRIGERATION OR COOLING
REFRIGERATORS
TESTING
THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
WEAPONS
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Summary:Device for detecting the exceeding of a temperature threshold incorporating a first mobile part (5) in a sealed chamber (4) containing a material melting at the temperature of the threshold and a second mobile part (8) outside the chamber. In the armed position, the two parts exert forces on one another tending to move them apart, but the first part is blocked by the solidified material and the second is immobilized by the combination of shapes (12, 13) in case (9). The melting of the material frees the first part, whose displacement frees the second part, which then operates an alarm system (18). This displacement leads to the return of the first part to the initial position, which permits rearming when the material has resolidified.
Bibliography:Application Number: US19900503738