Patent · US Expired

Ventilating tip for a smokable article

US4602647A · kind A · utility

4Cited by

5References

10Claims

0Family size

Assignee

B.A.T. Cigarettenfabriken GmbH · DE

Inventors

Wolfgang Wiethaup · Hamburg, DE
Werner Schneider · Erbach, DE
Kurt Paulsen · Hamburg, DE

Key dates

Filing date	Jan 2, 1985
Grant date	Jul 29, 1986
Priority date	—
Expiry date	Jan 2, 2005

Classification

Technology area (CPC A)Human Necessities
CPC primaryA24D3/043
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

A tip for a smokable article comprises a tubularly arranged covering material with an air-pervious ventilation zone, and also a tubular core which is within the covering material and which contains no filter material. The air-impervious tube wall of this core has a tubular outlet region directed towards the smoker and also a conically tapering inlet region provided with a small inlet aperture and directed towards the tobacco. Between the core and the covering material, through-flow ducts are formed by appropriate shaping of the surface of the core and these in conjunction with the remaining shape of the core define the draw resistance of this tip, and at the same time dilute the smoke through the air aspirated through the ventilation zone. This core can be manufactured from an extruded tubular blank of synthetic plastic material, in which the ducts are formed sectionwise by means of eccentrics.

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