Coaxial cigarette

US4986287A · kind A · utility

Assignee

• B.A.T. Cigarettenfabriken GmbH · DE

Inventors

• Werner Schneider · Erbach, DE
• Horst Borowski · Hamburg, DE
• Erwin Kausch · Bayreuth, DE
• Rolf Kutting · Jesteburg, DE
• Meinhard Meyer · Pinneberg, DE
• Knut Moller · Hamburg, DE
• Bernd-Henrik Muller · Hamburg, DE
• Adolf Schluter · Artern, DE

Key dates

• Filing date: Oct 18, 1989
• Grant date: Jan 22, 1991
• Expiry date: Oct 18, 2009

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A24D1/00
• WIPO field: Other consumer goods
• WIPO sector: Other fields

Abstract

A coaxial cigarette comprising an inner core of a material glowing away substantially without residue, in particular tobacco material, with a sheath for the inner core, an outer jacket coaxially surrounding the inner core and its sheath and comprising a tobacco and/or non-tobacco material, and a sheath for the outer jacket, has a diameter of the inner core which lies in the range from 45% to 80% of the outer diameter of the coaxial cigarette; the inner core has a packing density in the range from 300 to 400 mg/cm.sup.3 ; the outer jacket has a packing density in the rnage from 170 to 250 mg/cm.sup.3. The sheath of the inner core has an air permeability of less than 3 ISO units. The outer sheath has a front segment to be lit and a rear mouth-side segment; the front ignition-side segment of the outer sheath contains conventional glow salts and has an air permeability of 15 to 40 ISO units and the rear mouth-side segment of the outer sheath contains no glow salts and has an air permeability of less than 3 ISO units.