Method and device for detecting foreign bodies in cigarettes

Details Method and device for detecting foreign bodies in cigarettes Method and device for detecting foreign bodies in cigarettes

2006-02-28

2006-02-28

Griffin, Steven P. (Department: 1731)

Tobacco

Tobacco treatment

With electrical or radiant energy

C131S290000, C131S905000, C131S908000

Reexamination Certificate

active

07004177

ABSTRACT:
The invention relates to a method for detecting and selecting foreign parts in cigarettes, in which the tobacco is exposed in the vicinity of the cigarette maker to microwave radiation and both a signal SDrelating to the tobacco density and a signal SFrelating to the tobacco moisture are generated. The density signal SDand moisture signal SFare evaluated in combination with one another for the detection of the presence or absence of foreign parts in the tobacco.

REFERENCES:
patent: 4707652 (1987-11-01), Lowitz
patent: 5476108 (1995-12-01), Dominguez
patent: 5736864 (1998-04-01), Moller
patent: 3905658 (1990-08-01), None
patent: 19705260 (1997-08-01), None
patent: 29719600 (1998-02-01), None
patent: 0902277 (1999-03-01), None
patent: 0889321 (1999-07-01), None

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