Ventilated filter and smoke dispersing mouthpiece

Details Ventilated filter and smoke dispersing mouthpiece Ventilated filter and smoke dispersing mouthpiece

1983-03-25

1985-05-21

Millin, V.

Tobacco

Smoke separator or treater

Interior surface causes particular flow characteristic

131361, 131336, 131344, 131341, A24D 300

Patent

active

045179964

ABSTRACT:
A filter device for a cigarette includes a porous filter rod and a smoke impermeable mouthpiece located at the smoke outlet end of the filter rod. The mouthpiece is formed with a converging nozzle open to the smoke outlet end of the filter rod, and a diverging nozzle, in flow communication with the converging nozzle, open to the outlet or mouth end of the mouthpiece. In addition, a number of smoke flow capillaries are formed generally longitudinally through the mouthpiece. Each smoke flow capillary has an open inlet end open to the smoke outlet end of the filter rod and an open outlet end open to the mouth end of the mouthpiece. A tipping material circumscribes the filter rod and mouthpiece for holding them together and for attaching the filter device to the tobacco column of the cigarette. The tipping material is air permeable over at least a portion of the filter rod.

REFERENCES:
patent: 2954778 (1960-10-01), Lebert
patent: 3179112 (1965-04-01), Siegenheim
patent: 3630210 (1971-12-01), Haslam
patent: 4413641 (1983-11-01), Dwyer et al.

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