发明名称 |
IMPROVEMENTS RELATING TO SMOKING ARTICLES |
摘要 |
A smoking article mouthpiece comprises a smoke passage and a ventilation air duct, both of which extend from end-to-end of the mouthpiece. The duct is of a depth of 25% or more of the diameter of the mouthpiece. When the mouthpiece is incorporated in a smoking article such that air may enter the duct, the ratio of the velocities of air and smoke is in excess of ten. The mouthpiece may also comprise a ventilation-air collection groove which extends about the element and opens into the ventilation air duct. |
申请公布号 |
DE3564901(D1) |
申请公布日期 |
1988.10.20 |
申请号 |
DE19853564901 |
申请日期 |
1985.09.19 |
申请人 |
BRITISH-AMERICAN TOBACCO COMPANY LIMITED |
发明人 |
HORSEWELL, HENRY GEORGE;DUKE, MARTIN GRAHAM |
分类号 |
A24D1/04;A24D3/04;(IPC1-7):A24D3/04 |
主分类号 |
A24D1/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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