Tobacco smoke filters
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 27, 1987
Grant Date -
N/A
app pub date -
May 20, 1986
filing date -
May 20, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An insert is interposed between the tobacco containing portion and the filter tip of a cigarette. The insert is formed with a passage connecting the two sections. The passage is surrounded by an annulus with two diametrally opposed orifices between the passage and the orifices. Rings surround the insert over the area of each orifice. The rings fit loosely around the insert. The annulus is covered with perforated paper. In use a smoker who wants a mild taste puffs weakly while if he wants a strong taste he puffs heftily so that the rings close the orifices.
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