A - Human Necessities – 24 – D
Patent
A - Human Necessities
24
D
131/17
A24D 3/00 (2006.01) A24D 3/04 (2006.01)
Patent
CA 1224689
A B S T R A C T A smoking article mouthpiece element comprise. a first portion within which smoke-passage means and ventilation-duct, means extend from end-to-end of said portion, a downstream end of said duct means being spaced from the periphery of said first, portion and the wall and the walls of said duct means being gas impervious and a second portion disposed at the end of the first portion being in smoke-flow communication with said smoke passage means of said first, portion, and gas-impervious wall means at the end of said second portion closer to said first, portion extending inwardly from a first, location at the periphery of said element to a second location at the side of the upstream end of said duct means further from said first location, said wall means bounding a cavity in communication with said duct means and segregated from the interior of said second portion. The said first and second portions may form respective parts of an integral unit or may be discrete components disposed in end-to-end abutment. The aforesaid wall means is suitably Part of said second portion. smoke filtration material may be disposed in said smoke passage means and/or in the interior of said second portion. The said ventilation-duct means, which advantageously extends substantially parallel to the longitudinal axis of said first portion, may be one of a plurality of similar duct means. A smoking article according to the invention may thus comprise a smoking-material rod, a mouthpiece element, with a cavity as aforesaid and a wrapper extending about said mouthpiece element and providing for ingress of air to said cavity. The ratio of the velocity of air issuing from the mouth end of said ventilation-duct means to the velocity of smoke issuing from the mouth end of said smoke- passage means being in excess of at least, ten, and possibly in excess of twenty when said smoking article is smoked under standard machine-smoking conditions. In detail, a smoking article mouthpiece element may be substantially as hereinbefore described with reference to Figures 1,2 and 3 or Figures 4 and 5 or Figures 6 and 7 of the drawing.
467638
Duke Martin G.
Horsewell Henry G.
British-American Tobacco Company Limited
Ridout & Maybee Llp
LandOfFree
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