The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 11, 1979
Filed:
Mar. 06, 1978
Uwe Heitmann, Schwarzenbek, DE;
Heinz-Christen Lorenzen, Hamburg, DE;
Gunter Wahle, Reinbek, DE;
Rolf Dahlgrun, Schwarzenbek, DE;
Hauni-Werke Korber & Co. KG., Hamburg, DE;
Abstract
The permeability of portions of or entire wrappers of successive filter cigarettes is tested with a gaseous fluid independently of the permeability of perforated portions of wrappers around the filter mouthpieces. Signals denoting the permeability of major portions of or entire wrappers are compared with a reference signal denoting the maximum permissible permeability, and the cigarettes having wrappers of excessive permeability are segregated from satisfactory cigarettes. Signals denoting the permeability of perforated wrapper portions are made visible to attendants or cause the generation or audible signals, for example, to facilitate proper adjustment of perforating instrumentalities if the permeability of perforated wrapper portions is too low. Alternatively, signals which denote the permeability of perforated wrapper portions are compared with a reference signal denoting the minimum acceptable or excessive permeability, and the cigarettes wherein the permeability of perforated wrapper portions is too low or excessive are segregated from other cigarettes. The cigarettes are moved sideways in the course of measurement of the permeability of their wrappers, and the permeability of major portions of or entire wrappers can be ascertained simultaneously with, prior or subsequent to measurement of permeability of perforated wrapper portions. The perforations are provided for the purpose of admitting atmospheric air into the column of tobacco smoke.