Tar-free smoking devices
Patent 4474191 Issued on October 2, 1984. Estimated Expiration Date: 
September 30, 2002. 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.
September 30, 2002. 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 2104266 2580974 2667170 3258015 3356094 3496946 3516417 Mouthpieces to facilitate giving up smoking Noncombustion system for the utilization of tobacco and other smoking materials Smoking pipe InventorApplicationNo. 06/431411 filed on 09/30/1982US Classes:131/198.2Adjustable air inlet typeExaminersPrimary: Millin, VincentAttorney, Agent or FirmInternational ClassesA24D 1/00 (20060101)A24F 1/00 (20060101) A24F 47/00 (20060101) AbstractDisposable smoking devices disclosed in a variety of pipe, cigarette or cigar configurations, and designed to totally suppress the inhalation by the user of the toxic substances contained in tobacco smoke. This goal is achieved by keeping the air-intake channel separated from the combustion chamber by a fire-resistant, but heat-conductive wall and by depositing on the channel-side of this wall nicotine and other tobacco-simulating substances in a volatile or sublimable form whose vapors only are inhaled; thus giving the user the same sensations as a common pipe, cigar or cigarette, but free of the deleterious effects inherent to the absorption of tobacco smoke.The air intake channel may be located either in the center of the combustion chamber or along its periphery. | |
