Lamp with lead wire thermal switch

Details Lamp with lead wire thermal switch Lamp with lead wire thermal switch

1985-03-28

1987-11-24

Jones, Larry

Electric lamp and discharge devices: systems

Combined load device or load device temperature modifying...

Automatic shunt circuit closing or cut-out switch

315 73, 315106, 315107, 337 27, H05B 4118

Patent

active

047091878

ABSTRACT:
A rapid-start fluorescent lamp has a tubular envelope with a phosphor-coated inner wall, a pair of spaced electrodes and a pair of electrical leads sealed into the ends of the envelope with one electrical lead directly connected to the electrode and the other electrical lead connected through a bi-metal circuit breaker to the electrode with the circuit breaker formed to open-circuit at a given range of temperatures. Also, the discharge lamp is fabricated by preparing a phosphor coated envelope, forming a pair of end members having a pair of electrical leads, a bi-metal circuit breaker and electrode, sealing the end members into the envelope, heating and exhausting the envelope, heating the electrodes, dispensing a fill gas and mercury into the envelope, pinching off the exhaust tubes of the envelope and severing the fuse member of the circuit breaker.

REFERENCES:
patent: 2267098 (1941-12-01), Hays, Jr.
patent: 2269843 (1942-01-01), Carpenter et al.
patent: 4156831 (1979-05-01), Cassidy et al.
patent: 4211958 (1980-07-01), Bickford et al.
patent: 4481446 (1984-11-01), Tsuchihashi et al.
patent: 4572986 (1986-02-01), Sindlinger

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