Flashbulb with a heat shield

Details Flashbulb with a heat shield Flashbulb with a heat shield

1988-02-03

1990-01-23

Wieder, Kenneth

Electric lamp and discharge devices

With gas or vapor

Having baffle, partition, or constricting means affecting...

313634, 313636, H01J 6130, H01J 6180, H01J 6190

Patent

active

048960721

ABSTRACT:
A flashbulb wherein short radii curvatures are allowed for a curved plasma channel without overloading the walls, so that a high luminance is obtained. The discharge space (9) between two electrodes (4, 5) is annularly formed. The outside wall (1) forms a closed hollow cylinder of glass. The outside wall (1) forms a closed hollow cylinder of glass. The inside walls (7, 8) are composed of white ceramic material which is hermetically fused to the glass.

REFERENCES:
patent: 2254431 (1941-09-01), Marden et al.
patent: 2465123 (1949-03-01), Ruff et al.
patent: 3651366 (1972-03-01), Giannini
patent: 3671796 (1972-06-01), Passamante

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