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US 10,729,170 B2Granted
Cigarettes and their construction
OwnerKerry Grant Dugganinventor
Life of this patent
Estimating the term…
Abstract
A cigarette is provided with the tobacco column portion adjacent the filter assembly encased by a heat shrink material whereby as the burn approaches the butt the heat shrink material begins to contract radially and compress the encased tobacco column restricting the air flow therethrough. This reduces the diameter of burning column adjacent the filter assembly and thus extinguishes or at least confines the remaining tobacco in the cigarette.
Claims1
A cigarette that includes:
- a column assembly including a tobacco column and a co-axially juxtaposed filter, the tobacco column having a butt portion extending axially from the filter, and
- a composite tipping paper wrap consisting of a band of tipping paper wrapped about the filter and a band of heat shrink material protruding from one edge of the tipping paper, the bands being continuously connected along a common seam to provide a single layer of tipping wrap, wherein the band of heat shrink material is located beyond and does not extend across a junction between the filter and the juxtaposed tobacco column and forms a heat shrink layer encasing the butt portion of the tobacco column.
Dependencies are inferred from the claim text.