Method and device for checking cigarettes and the like

Details Method and device for checking cigarettes and the like Method and device for checking cigarettes and the like

1976-11-19

1977-07-12

Swisher, S. Clement

Measuring and testing

With fluid pressure

Leakage

G01M 326

Patent

active

040346005

ABSTRACT:
A method and a device are provided for checking finished cigarettes or other similar products in order to detect and reject detective cigarettes. The method consists essentially in filling a chamber with compressed gas in order to establish therein a pressure higher than a minimum pressure corresponding to an acceptable cigarette, cutting off the communication between said chamber and the source of compressed gas, connecting said chamber with one end of the cigarette while its other end is momentarily sealed, measuring the pressure drop resulting from the coupling of said chamber with the cigarette, and generating a rejection signal when the instantaneous value of the measured pressure drops below said minimum pressure valve. This invention is applicable notably to filter-tip cigarettes.

REFERENCES:
patent: 3618365 (1971-11-01), McArthur

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