Electric lamp with stress relieving means

Details Electric lamp with stress relieving means Electric lamp with stress relieving means

1985-01-09

1986-11-11

Chatmon, Saxfield

Electric lamp and discharge devices

With support and/or spacing structure for electrode and/or...

For filament

313272, 313251, 313285, H01J 188, H01J 1942, H01K 118

Patent

active

046224874

ABSTRACT:
An electric lamp (e.g., tungsten-halogen) wherein a glass bridge (31) is used and has the support wires (23) of the lamp's filament structure (13) passing therethrough. The support wires are indented (e.g., with V-shaped notches) on opposing sides thereof just below the bridge to permit movement of the portions of the support wires between the bridge and press-sealed end (17) of the lamp's envelope (11) during press-sealing, thereby substantially relieving stresses on the bridge (31) and possible breakage thereof as may occur if such wires were retained in a fixed, non-movable arrangement.

REFERENCES:
patent: 2916650 (1959-12-01), Honing et al.
patent: 3466489 (1969-09-01), Audesse et al.
patent: 3543962 (1970-12-01), Peterson
patent: 3569988 (1971-03-01), Randmer
patent: 3870920 (1975-03-01), De Fraeye et al.
patent: 4023060 (1977-05-01), Pike et al.

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