Heating device for volatilization of fragrant gel
Patent 5136684 Issued on August 4, 1992. Estimated Expiration Date: 
October 2, 2011. 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.
October 2, 2011. 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 2513919 2931880 3748438 Electrically heated vaporizer device for dispensing a thermally volatilizable substance Electrically heated vapor dispenser Fragrance dispensing apparatus Tamper-resistant container utilizing a flexible seal Patent #: 4849606 InventorsAssigneeApplicationNo. 771072 filed on 10/02/1991US Classes:392/392, Wall mounted392/390With disposable evaporant cartridge or containerExaminersPrimary: Walberg, TeresaAttorney, Agent or FirmInternational ClassA61L 009/03AbstractA device for heating a fragrant gel is assembled from a base plate and a tray holder adapted to hold a gel cartridge. Electrical terminal prongs connect to a heating element which is disposed in an elongated channel in the base plate. The tray holder has a complimentary elongated channel, such that the heating element is completely sealed and electrically insulated when the holder is joined to the plate. The opposite convex side of the channel forms an elongated rail in the holder which acts both as a heat-distribution and a cartridge retaining member. | |
