High-pressure electric discharge lamp with electrode support

Details High-pressure electric discharge lamp with electrode support High-pressure electric discharge lamp with electrode support

1981-07-30

1984-07-31

Demeo, Palmer C.

Electric lamp and discharge devices

With gas or vapor

Having electrode lead-in or electrode support sealed to...

313335, 445 26, 445 29, H01J 61073, H01J 6130, H01J 6136, H01J 918

Patent

active

044632819

ABSTRACT:
A high-pressure electric discharge lamp comprises a support part surround each electrode rod, each electrode rod having a spring wound therearound and pressing the respective support part toward an electrode mounted at the end of the respective electrode rods. This arrangement comprises a part of an assembly which is then mounted into envelope necks which extend from respective opposite ends of a quartz glass envelope which defines the discharge space of the lamp. A narrowing area is defined at the transition of the envelope necks to the envelope, the supporting parts each having a rounded end resting against a respective inclined surface defined by the narrowings at the transitions between the envelope necks and the envelope. The springs resiliently bias the supporting parts against the inclined inner surfaces of the narrowings. Also disclosed is a method of manufacture of the above described high-pressure electric discharge lamp.

REFERENCES:
patent: 1820392 (1931-08-01), Hotchner
patent: 3140417 (1964-07-01), Tietze
patent: 4038578 (1977-07-01), Mathijssen

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