Curved tube type ultra high pressure mercury arc discharge lamp

Details Curved tube type ultra high pressure mercury arc discharge lamp Curved tube type ultra high pressure mercury arc discharge lamp

1981-09-29

1984-11-13

Demeo, Palmer

Electric lamp and discharge devices

With gas or vapor

Envelope with particular structure

313639, 313165, H01J 6130, H01J 6120

Patent

active

044828420

ABSTRACT:
In a curved tube type ultra high pressure mercury discharge lamp device of the type comprising an arcuate glass tube, a quantity of mercury contained in both ends of the glass tube and electrodes projecting into the glass tube beyond surfaces of the mercury for creating electric discharge between the electrodes, throttles are formed on an inner surface of the glass tube near the electrodes. The throttles have diameters smaller than an inner diameter of the glass tube and the mercury is contained in spaces between the throttles and the both ends of the glass tube.

REFERENCES:
patent: 760789 (1904-05-01), Hewitt
patent: 965900 (1910-08-01), Hewitt
patent: 2190657 (1940-02-01), Germer
patent: 2467687 (1949-04-01), Noel
patent: 3878419 (1975-04-01), Lafiandra

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