QUARTZ-TO-METAL SEAL MANUFACTURE

An assembly is formed of an outer tubular silica member having therein an inner tubular silica member which has an open end fused to the inner wall of the outer member and a closed end in the form of a reentrant dimple having a thinned-out annular area of weakness in its sidewalls, a thin-walled mol...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	GENE I. THOMASSON, EDWARD V. PARILLO
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY ELECTRIC INCANDESCENT LAMPS ELECTRICITY GLASS JOINING GLASS TO GLASS OR OTHER MATERIALS METALLURGY MINERAL OR SLAG WOOL SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS
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Beschreibung
Zusammenfassung:	An assembly is formed of an outer tubular silica member having therein an inner tubular silica member which has an open end fused to the inner wall of the outer member and a closed end in the form of a reentrant dimple having a thinned-out annular area of weakness in its sidewalls, a thin-walled molybdenum cup is inserted over the inner member into the annular space between said outer and inner members, the walls of said outer and inner members are fused to embed and hermetically seal the walls of the cup therebetween, and the closed end of the dimple is tapped with a small rod inserted through a hole in the closed end of the cup to break out the end of the dimple at its thin sidewalls.