Device for detecting the exceeding of a temperature threshold

Details Device for detecting the exceeding of a temperature threshold Device for detecting the exceeding of a temperature threshold

1990-04-03

1991-03-12

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

116204, 116217, 340585, G08B 1702, G01D 512

Patent

active

049996150

ABSTRACT:
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.

REFERENCES:
patent: 3611220 (1971-10-01), Hoffman
patent: 4058014 (1977-11-01), Durand
patent: 4144532 (1979-03-01), Boyd
patent: 4325059 (1982-04-01), Jaye
patent: 4501124 (1985-02-01), Shone et al.
patent: 4649854 (1987-03-01), Janke et al.
patent: 4812826 (1989-03-01), Kaufman et al.
patent: 4876531 (1989-10-01), Dondorf
"Meltdown Alarm", CQ Radio, vol. 35, No. 3, Mar. 1979.
Engineering, vol. 226, No. 9, Sep. 1986, p. 595, London, GB.

Affiliated with

Also associated with

Rating

Device for detecting the exceeding of a temperature threshold does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Device for detecting the exceeding of a temperature threshold, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for detecting the exceeding of a temperature threshold will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-450898