Method and apparatus for monitoring for failure temperatures...

Communications: electrical – Condition responsive indicating system – Specific condition

Reexamination Certificate

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C340S584000, C340S590000, C340S594000, C340S638000, C340S652000, C340S653000

Reexamination Certificate

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11070454

ABSTRACT:
An apparatus for monitoring a temperature of a structure, comprising: one or more electrically conductive loops adapted to be affixed to the structure, each including first and second elongate connection strips each made of a first metal composition having a first melting point, and a temperature sensitive band connected between the first and second connection strips and made of a second metal composition having a second melting point less than the first melting point. The apparatus further comprises a monitor, connected to respective ends of the first and second connection strips spaced-apart from the temperature sensitive band, configured to detect an open-circuit in the one or more electrically conductive loops caused when the temperature sensitive band separates from either of the connection strips.

REFERENCES:
patent: 3555531 (1971-01-01), Montone
patent: 3774184 (1973-11-01), Scarelli
patent: 4159447 (1979-06-01), Gernhardt et al.
patent: 4388267 (1983-06-01), Tokarz
patent: 4520352 (1985-05-01), Domingue
patent: 5185594 (1993-02-01), DeChurch
patent: 5425274 (1995-06-01), Creager
patent: 5969260 (1999-10-01), Belk et al.

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