Lamps for high powers

Details Lamps for high powers Lamps for high powers

1976-11-26

1978-05-30

McCarthy, Helen M.

Receptacles

Envelope for electric lamp or similar device

Tv tube

65 30E, 106 52, 106 53, 313221, 313317, 428218, 428410, H01J 6130

Patent

active

040919510

ABSTRACT:
A lamp, particularly for high powers, whose envelope consists of lime glass and in which in a 30.mu. thick surface layer Na.sup.+ - and/or Li.sup.+ ions are replaced by larger ions. This results in a compressive stress in the layer which is at least 7 kg/mm.sup.2. The envelope is as strong and resistant to temperature changes as hard glass.

REFERENCES:
patent: 3498773 (1970-03-01), Grubb et al.
patent: 3723790 (1973-03-01), Dumbaugh et al.
patent: 3730871 (1973-05-01), Boffe
patent: 3764840 (1973-10-01), Shiraishi
patent: 3844754 (1974-10-01), Grubb et al.
patent: 3875763 (1975-04-01), Snyder et al.
patent: 3930820 (1976-01-01), Cooke et al.

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