Glass manufacturing – Processes – Fusion bonding of glass to a formed part
Patent
1986-08-25
1987-06-30
Kellogg, Arthur
Glass manufacturing
Processes
Fusion bonding of glass to a formed part
65 5921, 65 5922, 65 5924, 65 5928, 65 594, 65 595, 65140, 65154, C03C 2702
Patent
active
046768173
ABSTRACT:
A rugged scintillation detector uses a hermetically sealed window assembly welded or otherwise bonded to the detector housing. A method and apparatus useful in forming a reproducible hermetic seal between the glass and an annular metal retaining ring is described. The glass and ring are chosen so that the ring diameter is slightly larger than that of the glass at room temperature. A thin layer of frit at the interface ensures a very tight mechanical seal, and a surface layer of chromium oxide on the ring ensures a secure chemical bond. The assembly device uses pressure and counterpressure to uniformly and reproducibly assemble the glass window into the retainer ring at elevated temperatures.
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patent: 3410674 (1968-11-01), Martin
patent: 3464805 (1969-09-01), Landron, Jr.
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patent: 3672858 (1972-06-01), Berg
patent: 4162826 (1979-07-01), Van Der Beck et al.
patent: 4617044 (1986-10-01), Kramer et al.
Tailor Ramesh C.
Utts Bradley K.
Harshaw/Filtrol Partnership
Kellogg Arthur
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