Electrodeless lamp with profiled wall thickness
Patent 5541475 Issued on July 30, 1996. Estimated Expiration Date: 
June 7, 2015. 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.
June 7, 2015. 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 3761757 Method and apparatus for igniting electrodeless discharge lamp Magnetic arc spreading fluorescent lamp with protective envelope Electrodeless discharge lamp Electrodeless lamp bulb of modified shape for providing uniform emission of radiation Discharge lamp with external electrodes Electrodeless low-pressure discharge lamp Patent #: 5130912 InventorsApplicationNo. 483975 filed on 06/07/1995US Classes:313/484, With gaseous discharge medium313/634Envelope with particular structureExaminersPrimary: Brinich, StephenAttorney, Agent or FirmInternational ClassH01J 061/00AbstractAn electrodeless discharge lamp has a thinner wall portion located proximate a position of high applied power. Since the heat capacity of the thinner wall portion is smaller then the remainder of the bulb wall, the thinner wall portion cools faster when the lamp power is turned off, and the condensable part of the fill tends to condense at this bulb wall portion. When the power is turned on again, since the thinner wall portion is located at a position of high power application, the fill is available in such region to be evaporated, thereby resulting in more rapid starting.Field of SearchInduction-type discharge device loadElectromagnetic influenced discharge device WITH LUMINESCENT SOLID OR LIQUID MATERIAL With gaseous discharge medium Phosphor on envelope wall Including particular phosphor Plural Aperture-type tube With protective coating or filter Envelope structure or material Envelope with particular structure Having electrode exterior to envelope Single electrode type discharge device, or including particulate material | |
