Automatic starting system for solid state powered electrodeless lamps
Patent 4041352 Issued on August 9, 1977. Estimated Expiration Date: 
August 9, 1994. 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.
August 9, 1994. 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 3142758 3196312 3227923 3258758 3786308 3873884 Light source apparatus Light generation by an electrodeless fluorescent lamp Patent #: 4010400 InventorsAssigneeApplicationNo. 05/705323 filed on 07/14/1976US Classes:315/248, Induction-type discharge device load250/372, Ultraviolet light responsive means250/504R, Ultraviolet or infrared source315/149, WITH RADIANT ENERGY SENSITIVE CONTROL MEANS315/158, Radiant energy controlled regulation of the current supply for the load device315/159, Electric switch controlled by the radiant energy responsive device315/267, Electromagnetic influenced discharge device load315/344, Electromagnetic influenced discharge device315/39Discharge device load with distributed parameter-type transmission line (e.g., wave-guide, coaxial cable)ExaminersPrimary: Chatmon, Saxfield Jr.Attorney, Agent or FirmAbstractA starting assist control circuit for an electrodeless light source in which a UV source for assisting in starting an electrodeless lamp is coupled in series with the dc supply for a microwave power source for the lamp so that a reduced dc voltage is supplied to the microwave power source at lamp starting. At staring, a capacitive impedance element is coupled across the inner and outer conductors of the fixture to provide an additional starting assist by creating a condition of resonance in the fixture. A heat responsive bimetallic switch element associated with both the capacitor and the UV source automatically shorts out the UV source and decouples the capacitor after the lamp has started thereby permitting full dc power to the microwave power source during the operating condition of the lamp.Field of SearchInduction-type discharge device loadDischarge device load with distributed parameter-type transmission line (e.g., wave-guide, coaxial cable) Load device irradiating the radiant energy responsive device Radiant energy controlled regulation of the current supply for the load device Electric switch controlled by the radiant energy responsive device Thermostatic controlled delaying means Electromagnetic influenced discharge device load Inductance in the supply circuit Electromagnetic influenced discharge device | |
