Coaxial filter cigarette
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 8, 1995
Grant Date -
N/A
app pub date -
Jun 8, 1994
filing date -
Jun 24, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The coaxial filter cigarette according to the invention contains of a coaxial rod portion and a coaxial filter element. The rod portion contains an inner core of a material glowing or smouldering substantially residue-free, in particular tobacco material, which is surrounded by a wrapper which in turn is surrounded by an outer jacket of a tobacco and/or non-tobacco material. A wrapper of an air-permeable material surrounds the outer jacket. The coaxial filter element has a filter core with an air-impermeable wrapper. A filter jacket having a diameter corresponding to the diameter of the outer jacket coaxially surrounds the filter core and its wrapper. An air-impermeable wrapper serving also to connect the rod portion and filter element surrounds the filter jacket. A ventilation zone is worked into the air-impermeable wrapper for the filter jacket. In the transition region between the rod portion and the filter element a smoke mixing zone is formed for defined variation of the smoke mixture leaving the rod portion before it flows into the filter element.
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