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US 8,573,230 B2Granted
Smoking article with coaxial tobacco rod
AssigneePhilip Morris USA Inc.
InventorsShuzhong Zhuang, Georgios D. Karles, Raquel M. Olegario
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Abstract
A smoking article having a cylindrical tube of smokable material having an outer wrapper, a concentric rod of smokable material coaxially positioned within the cylindrical tube of a smokable material, and an inner wrapper separating the cylindrical tube and the concentric rod. A filter attaches to the tobacco rod with an annular film positioned between the filter and the tobacco rod. The annular film increases the resistance-to-draw of the cylindrical tube during smoking.
Claims21
A smoking article comprising:
- a tobacco rod comprising:
- a cylindrical tube of smokable material having an outer wrapper;
- a concentric rod of smokable material coaxially positioned within the cylindrical tube of a smokable material;
- and
- a semi-impermeable inner wrapper separating the cylindrical tube and the concentric rod;
- a filter attached to the tobacco rod;
- and
- an annular film on a tipped end of the cylindrical tube of smokable material and which is positioned between the filter and the tobacco rod, wherein the annular film increases a resistance-to-draw through the cylindrical tube as compared to a resistance-to-draw through the concentric rod.
5 more elements
A smoking article comprising:
- a tobacco rod comprising:
- a cylindrical tube of smokable material having an outer wrapper;
- a concentric rod of smokable material coaxially positioned within the cylindrical tube of a smokable material;
- and
- a semi-impermeable inner wrapper separating the cylindrical tube and the concentric rod;
- a filter attached to the tobacco rod;
- and
- a semi-impermeable annular film on a tipped end of the cylindrical tube of smokable material and which is positioned between the filter and the tobacco rod, and wherein the annular film increases a resistance-to-draw through the cylindrical tube as compared to a resistance-to-draw through the concentric rod.
5 more elements
Dependencies are inferred from the claim text.