Smoking article with valve
AssigneePhilip Morris USA Inc.
InventorsGail L. Yoss, Raquel Olegario, Michael Braunshteyn, Rowland W. Dwyer
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Abstract
A smoking article having a cylinder of smoking material, a hollow tube within the cylinder of smoking material, and a filter attached to the cylinder of smoking material. The filter includes an upstream segment containing an aerosol former, a downstream segment containing a sorbent material, and a valve positioned between the upstream segment and the downstream segment. The valve has a first position in which the valve is closed and a second position in which the valve is open and allows the passage of smoke through the filter.
Claims20
A smoking article comprising:
- a cylinder of smoking material;
- a hollow tube within the cylinder of smoking material;
- and
- a filter attached to the cylinder of smoking material, the filter comprising:
- an upstream segment containing an aerosol former;
- a downstream segment containing a sorbent material;
- and
- a valve positioned between the upstream and the downstream segments, wherein the valve includes a first position in which the valve is closed, and a second position in which the valve is open and allows the passage of smoke through the filter.
A smoking article comprising:
- a cylinder of smoking material;
- a hollow tube within the cylinder of smoking material;
- and
- a filter attached to the cylinder of smoking material, the filter having a segment containing an aerosol former, a valve having a first position in which the valve is closed, and a second position in which the valve is open and allows the passage of smoke through the filter, and at least one segment of filtering material.
A filter for a smoking article comprising:
- an upstream segment containing an aerosol former;
- a downstream segment containing a sorbent material;
- and
- a valve positioned between the upstream segment and the downstream segments, wherein the valve includes a first position in which the valve is closed, and a second position in which the valve is open and allows the passage of smoke through the filter.
A method of making a smoking article, comprising:
- forming a tobacco rod portion of the smoking article by placing smoking material between a hollow tube and an outer layer of wrapper paper;
- forming a filter portion of the smoking article having a plurality of segments comprising an upstream segment containing an aerosol former, a valve having a first position in which the valve is closed, and a second position in which the valve is open and allows the passage of smoke through the filter, and at least one filtering material segment;
- and
- joining said tobacco rod portion in end-to-end relationship with the filter portion.
Dependencies are inferred from the claim text.