(under subclass 198.1) Subject matter wherein the air intake
passageway, or structure therein, may be altered to vary the air flow.
(1) Note. A supplemental or substitute air inlet covered, at least in part, by a smoker's finger or having a valve therein controlled by a thermostat are included in this subclass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
270+, and particularly subclass 272 for an antismoking product or device which may vary the amount of air flowing through the smoking device.
336, for a smoke treater or separator which adds air to the smoke stream.
