Leak-detecting apparatus

Details Leak-detecting apparatus Leak-detecting apparatus

1977-05-12

1978-10-17

Queisser, Richard C.

Measuring and testing

With fluid pressure

Leakage

425 33, G01M 316

Patent

active

041201930

ABSTRACT:
Leak-detecting apparatus for a tire-vulcanizing press which is extremely sensitive and is capable of monitoring minute leaks in a diaphragm or bag in the region of the bottom of the bag susceptible to cracking and removed from the vicinity of the leak-detecting apparatus which ordinarily is at a top plate of the press. The apparatus includes temperature-sensitive resistive means in a normally balanced bridge circuit which is unbalanced by leakage fluid from the diaphragm for indicating a malfunction of the press and also includes a check valve for preventing air from outside the press from entering the vicinity of the temperature-sensitive resistive means.

REFERENCES:
patent: 2645117 (1953-07-01), Bendix et al.
patent: 3029469 (1962-04-01), Moore et al.

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