Air flow limiting filter

Details Air flow limiting filter Air flow limiting filter

1977-01-31

1978-10-10

Michell, Robert W.

Tobacco

Cigar or cigarette making

Including cooperating surfaces to induce rolling

131187, 131198R, A24D 104

Patent

active

041191056

ABSTRACT:
An improved smoke control device for smoking articles which contains a valve operative to close off the flow of smoke drawn through the smoking article depending upon the pressure drop or draw rate of each individual puff. Preferably, the valve comprises a resilient flap member responsive to the puff pressure drop for restricting or closing off smoke drawn through the smoking article and which will reopen after the pressure is relieved, thereby limiting each puff to a predetermined yield consistent with that obtainable in a normal puff.

REFERENCES:
patent: 1925936 (1933-09-01), Sanson
patent: 2709441 (1955-05-01), Motsinger
patent: 3394707 (1968-07-01), Ellis
patent: 3630210 (1971-12-01), Haslam
patent: 3685522 (1972-08-01), Kleinhans

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