Lamp with two internal capsules

Details Lamp with two internal capsules Lamp with two internal capsules

1988-08-25

1990-03-27

O'Shea, Sandra

Electric lamp and discharge devices

Plural unit

313 25, 313324, 362224, H01J 6134, F21S 300

Patent

active

049123602

ABSTRACT:
A double filamented lamp with one filament being a back up for the other filament may be formed with two internal capsules enclosed in a single exterior sheath. Each filament is securely positioned away from, and protected from the activity of the other filament. By securely coupling one capsule to the sheath, and the second capsule to the lamp base, both capsules are accurately positioned, and do not vibrate in the exterior sheath.

REFERENCES:
patent: 1696663 (1928-12-01), Becker
patent: 4285032 (1981-08-01), Honda et al.
patent: 4647809 (1987-03-01), Blaisdell et al.

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