A - Human Necessities – 24 – C
Patent
A - Human Necessities
24
C
131/57
A24C 5/32 (2006.01) A24C 5/34 (2006.01) G01M 3/26 (2006.01)
Patent
CA 1151492
ABSTRACT OF THE DISCLOSURE For the electropneumatic inspection of the longitudinal and/or transversal permeability of the ventilated cigarettes, each cigarette is subjected in any order of succession to at least three of the four inspections consisting in applying a pneumatic pressure alternatively to each of the two cigarette ends, while keeping the opposite end open and subsequently closed. Each of these inspections determines the pneumatic resistance met at the respective cigarette inlet and the values of these resistances are converted into electric signals and used for determining the longitudinal and/or transversal permeability of the cigarette. For this purpose use is made of the theory of the electric quadrupoles, by considering that the cigarette pneumatic resistance can be rewarded as composed of an equivalent transversal resistance, derived between two equivalent longitudinal resistances in series between each other.
369005
Cir - S.p.a. - Divisione Sasib
Swabey Ogilvy Renault
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