Electric lamp and discharge devices – With gas or vapor – Incandescent filament lamp
Patent
1992-11-03
1995-01-17
O'Shea, Sandra L.
Electric lamp and discharge devices
With gas or vapor
Incandescent filament lamp
313580, H01K 142
Patent
active
053828747
ABSTRACT:
A surface mountable miniature incandescent lamp assembly has an elongated substantially cylindrical glass envelope wherein a filament is contained in contact with metal members having glass-to-metal seals with the glass envelope. A substantial portion of the outer surface of the glass envelope is coated with a light reflective metal coating, with a non-coated elongated window transparent to light being left on the surface. The metal members extend axially to the outside from the envelope and, when mounted to a circuit board provide electric contact for the lamp. At least one of the end members includes a unique surface feature, such as a flat portion of an otherwise cylindrical surface, which is directionally coupled relative to the window of the glass envelope and which acts as a key or indexing surface for mounting the lamp assembly to the receiving surface (circuit board) with the window disposed in the desired direction.
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Illumination Technology, Inc.
O'Shea Sandra L.
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