Electric lamp and discharge devices – With temperature modifier – Double wall – jacket or casing for envelope
Patent
1988-09-30
1990-07-17
DeMeo, Palmer C.
Electric lamp and discharge devices
With temperature modifier
Double wall, jacket or casing for envelope
313579, H01J 6134
Patent
active
049423304
ABSTRACT:
A double-enveloped lamp assembly includes a light-source capsule subject to burst on rare occasions, a light-transmissive shield substantially surrounding the light-source capsule for absorbing and dissipating a portion of the energy when the light-source capsule bursts, a mesh of substantially nonconducting fiber for reinforcing the shield, and a light-transmissive outer envelope. The mesh is fabricated of ceramic fibers having sufficient strength to reinforce the shield. Since the fibers are nonconducting, sodium migration is minimized. The ceramic fiber mesh is particularly useful for high wattage lamps where thick-walled outer envelopes are not practical.
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Johnson Roger A.
Karlotski Robert J.
Sentementes Thomas J.
DeMeo Palmer C.
GTE Products Corporation
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