Method of controlling the endfill of tobacco articles

Details Method of controlling the endfill of tobacco articles Method of controlling the endfill of tobacco articles

1997-10-17

1999-11-02

Font, Frank G.

Optics: measuring and testing

Inspection of flaws or impurities

G01N 2100

Patent

active

059780797

ABSTRACT:
A method of controlling the endfill of elongated tobacco articles, whereby at least one collimated beam of electromagnetic radiation is directed on to a series of photosensors aligned in a direction parallel to a longitudinal axis of an article, and is partially intercepted by one end of the article; the signal emitted by each photosensor struck by the nonintercepted portion of the beam is rejected by means of a threshold measurement; and the signal emitted by each photosensor struck by the portion of the beam intercepted by and penetrating the article is compared with a range of limit values characteristic of the endfill.

REFERENCES:
patent: 3854587 (1974-12-01), Mcloughlin et al.
patent: 3980567 (1976-09-01), Benini
patent: 4307963 (1981-12-01), Bolt
patent: 5010904 (1991-04-01), Lassiter
patent: 5223915 (1993-06-01), Neri
patent: 5392359 (1995-02-01), Futamura et al.
patent: 5588068 (1996-12-01), Longest et al.
patent: 5596187 (1997-01-01), Di Stefano et al.
patent: 5715843 (1998-02-01), Hapke et al.
WPAT Abstract of DE 3638519, May 19, 1988.

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