High pressure discharge lamp with thermal switch

Details High pressure discharge lamp with thermal switch High pressure discharge lamp with thermal switch

1983-11-16

1987-04-21

Dixon, Harold

Electric lamp and discharge devices: systems

Combined load device or load device temperature modifying...

Discharge device load

313 25, 313 42, 315 73, 315309, H01J 744

Patent

active

046599657

ABSTRACT:
An electric discharge lamp has an arc tube within an outer gas filled glass envelope, and a thermal switching means is located within the outer envelope. The thermal switching means has a bimetal strip and a spring-like member each affixed to at least one of the electrical conductors, and upon application of heat the bimetal strip and spring-like member are flexed to short-circuit the electrical conductors and remove any DC potential between the main electrode and the starting electrode minimizing electrolysis.

REFERENCES:
patent: 2235360 (1941-03-01), Davis
patent: 3307069 (1967-02-01), Fraser et al.
patent: 3382403 (1968-05-01), Lloyd
patent: 3858086 (1974-12-01), Anderson et al.
patent: 3965387 (1976-06-01), Stuart et al.
patent: 4170744 (1979-10-01), Hansler

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