METHOD OF MANUFACTURING MINIATURE INCANDESCENT LAMPS

METHOD OF MANUFACTURING MINIATURE INCANDESCENT LAMPS

In the manufacture of a single ended subminiature incandescent lamp, a helically coiled wire filament is bent into a hairpin shape and is mounted on a temporary support while the mandrel on which the wire has been coiled is still within the filament. The filament is then inserted into acid in order...

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Hauptverfasser: KOPELMAN, BERNARD
Format: Patent
Sprache:eng
Schlagworte:
BASIC ELECTRIC ELEMENTS
ELECTRIC INCANDESCENT LAMPS
ELECTRICITY
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BERNARD
description In the manufacture of a single ended subminiature incandescent lamp, a helically coiled wire filament is bent into a hairpin shape and is mounted on a temporary support while the mandrel on which the wire has been coiled is still within the filament. The filament is then inserted into acid in order to dissolve the mandrel at the apex portion of the filament. The filament is then sealed within a glass envelope.
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subjects BASIC ELECTRIC ELEMENTS
ELECTRIC INCANDESCENT LAMPS
ELECTRICITY
title METHOD OF MANUFACTURING MINIATURE INCANDESCENT LAMPS
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