Smoking article with dual burn rate fuel element
Patent 4771795 Issued on September 20, 1988. Estimated Expiration Date: 
May 15, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 15, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesInventorsAssigneeApplicationNo. 06/863646 filed on 05/15/1986US Classes:131/194, Heat exchanging and/or insulating131/335, By adding constituent to smoke stream131/359, Tobacco substitute, i.e., nontobacco131/360, Cigar or cigarette131/364Blank or fillerExaminersPrimary: Millin, V.Attorney, Agent or FirmInternational ClassA24F 47/00 (20060101)AbstractThe present invention preferably relates to a smoking article which is capable of producing substantial quantities of aerosol, both initially and over the useful life of the product, without significant thermal degradation of the aerosol former and without the presence of substantial pyrolysis or incomplete combustion products or sidestream aerosol. The article employes a dual burn rate fuel element, which utilizes a fast burning segment and a slow burning segment.The use of such a dual burn rate fuel element has several advantages over conventional homogeneous fuels. For example, the fast burning component assists in the ease of lighting the fuel element, and provides rapid heat transfer to the aerosol generating means. This in turn, provides early aerosol delivery.The slow burning component provides for even heat distribution throughout the burn period. The slow burning material ensures steady aerosol delivery in terms of amount and provides adequate fuel for simulating the number of puffs obtained from a conventional cigarette, i.e., about nine or ten, when smoked under standard FTC conditions.Other References
| |
