Cigarette ventilation control
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 28, 1983
Grant Date -
N/A
app pub date -
Nov 26, 1980
filing date -
Nov 29, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus and a method for making ventilated cigarettes. Either the cigarettes are perforated after assembly or the tipping paper is perforated before assembly. The position of the perforations as a group relative to the mouth end of the cigarette is adjustable to select a required degree of ventilation of the assembled cigarette. Automatic selection is effected by measuring the dilution of the assembled cigarettes and causing the perforator to be controlled accordingly. Perforation may be effected by pins mechanically, by spark discharge by laser or by electron beam.
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