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US 5,392,793 AGranted
Smoking article with means to raise temperature of smoke
AssigneeRothmans International Services Limited
InventorPeter J. Molloy
Life of this patent
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AssigneeRothmans International Services Limited
InventorPeter J. Molloy
Estimating the term…
A smoking article comprising tubular support means to carry a supply of smoking material therein and to provide first and second ends thereof, said first end being located for ignition and said second end being directed towards filter means attached to said tubular support, said filter means including a transversely extending barrier located in a collection zone and on which particulate matter in the smoke from the smoking material is deposited when said second end is ignited and smoke is drawn through the smoking material to the filter means, and heating means for raising the temperature of said collection zone above that which would exist in the absence of said temperature raising means to raise the temperature of said smoke from said smoking material entering said zone and particulate material deposited on said transversely extending barrier, to release semi-volatile compounds therefrom.
A smoking article comprising a smoking material rod and filter means, said rod having support means forming a tube with smoking material therein, said filter means being attached to said support means, said rod having first and second ends, said first end being a free end and said second end being adjacent said filter means, said filter means including a barrier extending transversely of the tube and located in a collection zone on which barrier particulate matter in the smoke from the smoking material is deposited when said first end is ignited and smoke is drawn through the smoking material rod to the filter means, and said rod including a heating means comprising a hollow passage extending longitudinally of said rod from the first end to the second end to feed hot gases from said first end of said rod when ignited to said collection zone for raising the temperature therein above that which would exist in the absence of said passage to cause release of semi-volatile compounds from said deposited particulate matter.
A smoking article comprising a tubular support means, a charge of smoking material in said tubular support means, said smoking material having first and second ends, said first end being for ignition and said second end being closer to filter means attached to said tubular support than said first end, said filter means including a barrier extending transversely of the support means and located in a collection zone and on which particulate matter in the smoke is drawn through the smoking material to the filter means, and heating means for raising the temperature of said collection zone above that which would exist in the absence of said heating means to raise the temperature of said smoke from said smoking material entering said zone and of said deposited particulate matter on said barrier, to release semi-volatile compounds therefrom, and said heating means for raising the temperature in said collection zone being a chemical system for undergoing an exothermic chemical reaction.
A smoking article as claimed in claim 15 in which a portion of said exothermic chemical reaction element forms part of a transversely extending surface.
A smoking article comprising a tubular support means, a charge of smoking material therein, said smoking material charge having first and second ends, said first en being for ignition and said second end being closer to filter means attached to said tubular support than said first end, said filter means including a barrier extending transversely of the support means and located in a collection zone and on which particulate matter in the smoke from the smoking material is deposited when said first end is ignited and smoke is drawn through the smoking material to the filter means, and heating means for raising the temperature of said collection zone above that which would exist in the absence of said heating means to raise the temperature of said smoke from said smoking material entering said zone and of said deposited particulate matter on said barrier, to release semi-volatile compounds therefrom, and said heating means for raising the temperature of said deposited particulate matter employs an electric current.
Dependencies are inferred from the claim text.