发明授权
US4121597A Filtering pipe with extinguisher for cigarettes 失效
用香烟的灭火器过滤管道

Filtering pipe with extinguisher for cigarettes
摘要:
A filtering pipe of housing with built in extinguisher for cigarettes, such that the lighted ash of the cigarette is extinguished, as it communicates with a non-flammable, extinguishing portion of the filter. The filter includes an elongated housing, having a filter at the mouthpiece end and a ring of non-flammable, extinguishing material at the cigarette supporting end. A cigarette to be smoked is pushed outwardly of the housing such that the extinguishing ring abuts that portion of the cigarette where the lighted ash is to be extinguished.
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