Pipe with replaceable cartridge
Patent 4708151 Issued on November 24, 1987. Estimated Expiration Date: 
March 14, 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.
March 14, 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 ReferencesSmoking device Method of making smoking articles Smoking article Tar-free smoking devices Smoking devices Patent #: 4596258 InventorAssigneeApplicationNo. 06/840114 filed on 03/14/1986US Classes:131/359, Tobacco substitute, i.e., nontobacco131/194, Heat exchanging and/or insulating131/196, Spaced inner bowl131/226, Bowls131/329TOBACCO USERS' APPLIANCEExaminersPrimary: Millin, V.Attorney, Agent or FirmInternational ClassesA24D 1/00 (20060101)A24D 1/14 (20060101) A24F 1/00 (20060101) A24F 47/00 (20060101) AbstractThe present invention relates to a smoking article which has the appearance of a conventional pipe. The pipe of the present invention is capable of producing substantial quantities of aerosol, preferably without significant thermal degradation of the aerosol former and without the presence of substantial pyrolysis or incomplete combustion products.These and other advantages are obtained by providing a pipe which includes a disposable cartridge containing a short, i.e., less than about 30 mm long, preferably carbonaceous, fuel element, a physically separate aerosol generating means including an aerosol forming substance, and means for retaining the cartridge within the pipe bowl.Other References
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