Patent · US Expired

Method and apparatus for scanning the exterior of rod-shaped articles of the tobacco processing industry

US4644176A · kind A · utility

7Cited by

1References

27Claims

0Family size

Assignee

Hauni-Werke Korber & Co. K.G. · DE

Inventors

Uwe Heitmann · Hamburg, DE
Peter Pinck · Bargteheide, DE
Berthold Maiwald · Schwarzenbek, DE

Key dates

Filing date	Jun 4, 1984
Grant date	Feb 17, 1987
Priority date	—
Expiry date	Jun 4, 2004

Classification

Technology area (CPC G)Physics
CPC primaryG01N21/952
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The exterior of successive filter cigarettes, filter rod sections or other rod-shaped articles of the tobacco processing industry is monitored for the presence of various defects including absence or improper orientation of filter mouthpieces, improperly applied or outwardly projecting uniting bands, absence of roundness and/or others by directing a beam of radiation along successive articles while they move sideways in the flutes of a drum-shaped conveyor. The beams of radiation are influenced by defects and are thereupon monitored for the purposes of generating signals which are indicative of defects, if any. The beam of radiation extends all the way along the full length of each article and can also extend partially or around the entire circumference of each article.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.