Cigarette
Patent 5027837 Issued on July 2, 1991. Estimated Expiration Date: 
February 27, 2010. 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.
February 27, 2010. 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 References 2907686 3258015 3356094 3516417 3713451 Smoking device Smokeable device Method of making smoking articles Tar-free smoking devices Smoking devices Inventors
AssigneeApplicationNo. 488516 filed on 02/27/1990US Classes:131/359, Tobacco substitute, i.e., nontobacco131/194, Heat exchanging and/or insulating131/196, Spaced inner bowl131/361End structureExaminersPrimary: Millin, V.Assistant: Doyle, J. Foreign Patent References
International ClassesA24D 001/00A24D 001/18 AbstractA cigarette includes a longitudinally segmented combustible fuel element, and a substrate carrying tobacco extract and glycerin positioned physically separate from the fuel element. The fuel element is composed of a carbonaceous material and is extruded in such a manner that when positioned within the cigarette, its extrusion axis is perpendicular to the longitudinal axis of the cigarette. The fuel element includes a burning segment at one end, a base segment at the opposite end, and an isolation segment between the burning and base segments. A metal cartridge is radially spaced from the longitudinal outer periphery of the burning segment of the fuel element. A retaining member grasps the base segment of the fuel element and holds the fuel element securely in place within the cigarette. | |
