Solder glass and electrical device employing same
AssigneeOsram Sylvania Inc.
InventorsRichard C. Marlor, Paul W. Salvi
Life of this patent
Estimating the term…
Abstract
A solder glass which has, by weight: about 60 to 67% Sb2O3; about 27 to 32% B2O3; and from greater than 0 to 10% ZnO. The glass has a softening point between 388 and 466° C., depending on the ZnO content. The glass can be employed as a molten seal in electrical devices such as tungsten halogen or metal halide lamps.
Claims4
A seal for electrical devices which comprise a body of substantially fused silica and at least one electrically conductive member sealed therein, said member comprising a proximal portion projecting within said body, an intermediate thin foil portion hermetically sealed within said body, and a distal portion projecting outside said body, and a capillary passage surrounding said distal portion and extending to said intermediate portion, said capillary passage being filled with a solder glass comprising, by weight:
- about 60 to 67% Sb2O3;
- about 27 to 32% B2O3;
- and from greater than 0 to 10% ZnO.
A solder glass comprising, by weight:
- about 60 to 67% Sb2O3;
- about 27 to 32% B2O3;
- and from greater than 0 to 10% ZnO.
Dependencies are inferred from the claim text.