Miniature lamp and method

Abstract

A miniature lamp having a vitreous envelope with a generally tubular shaped bulb section and a press seal section with flattened parallel side portions. The bulb section encloses an elongated incandescent filament coil having a predetermined barrel length and a predetermined barrel radius. The filament coil has mounting leg members projecting from each end thereof and from opposite sides thereof. The lamp is so designed that the axis of the filament coil lies in a reference plane passing parallel to and intermediate the parallel planes defined by the flattened parallel side portions of the press seal section. Each of the mounting leg members proximate the top portion of the press seal section is offset a predetermined amount from the reference plane in a direction toward the side of the filament coil from which it projects with the angle which each mounting leg member is offset being such that the sine of the offset angle times the predetermined length of the projecting portion of the mounting leg member within the bulb section is approximately equal to the predetermined barrel radius of the filament coil. A method of making the miniature lamp is also disclosed.