Receptacles – Envelope for electric lamp or similar device – Tv tube
Patent
1976-12-13
1978-02-28
Marcus, Stephen
Receptacles
Envelope for electric lamp or similar device
Tv tube
313317, H01J 520
Patent
active
040761436
ABSTRACT:
An improved rectangular shaped pressed glass sealed beam lamp unit is provided which includes a molded projection disposed at a particular location on the lens and reflector members to provide more reliable hermetic sealing when joined together at their peripheries. Specifically, the molded projections are provided on the back sealing surfaces of each rim region to reduce unwanted deformation which otherwise occurs when these members are initially formed by pressing the glass in molds. Said molded projections disappear for the most part during the aforesaid heat sealing assembly although the glass material remains in the rim region after joinder.
REFERENCES:
patent: 2148314 (1939-02-01), Wright
patent: 2761990 (1956-09-01), Amdursky et al.
patent: 2764810 (1956-10-01), Gardiner
patent: 2969162 (1961-01-01), Stutske
patent: 3071280 (1963-01-01), Mayhew et al.
patent: 3285457 (1966-11-01), Peterson
Jenne, Jr. Frank
Tarnay Denes
General Electric Company
Kempton Lawrence R.
Marcus Stephen
McDevitt John F.
Neuhauser Frank L.
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