Inspection station

Details Inspection station Inspection station

2005-10-04

2005-10-04

Nguyen, Tu T. (Department: 2877)

Optics: measuring and testing

Inspection of flaws or impurities

Surface condition

Reexamination Certificate

active

06952257

ABSTRACT:
An inspection system detects the presence or absence of desired components of multiple component, longitudinally oriented cigarette filter assembly having at least opposite end components and a central component. A transport moves the filter assemblies along a high speed path of travel. At a first inspection station a transverse detection beam is directed toward each filter assembly in the area of the central component, and a receiver detects the reflection of that beam if the central component is present. A second inspection station directs a longitudinal detection beam toward an end filter component along a path substantially parallel to the longitudinal axis of the filter assembly, and a transverse receiver inwardly of the outer end of the filter assembly detects the presence of the longitudinal beam if that end filter component is missing.

REFERENCES:
patent: 3980567 (1976-09-01), Benini
patent: 4090794 (1978-05-01), Benini
patent: 4307963 (1981-12-01), Bolt
patent: 4486098 (1984-12-01), Buchegger et al.
patent: 4644176 (1987-02-01), Heitmann et al.
patent: 6384359 (2002-05-01), Belcastro et al.

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