Filament support for tubular lamps
阅读：31发布：2021-06-26
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5. IN AN ELECTRIC INCANDESCENT LAMP COMPRISING A TUBULAR ENVELOPE CONTAINING AN AXIALLY EXTENDING HELICALLY COILED COIL FILAMENT, SAID FILAMENT BEING INTERRUPTED AT A POINT INTERMEDIATE ITS ENDS THEREBY DEFINING SEPARATE FILAMENT SEGMENTS, AND A SUPPORT MEMBER JOINING THE INTERRUPTED ADJACENT ENDS OF SAID FILAMENT SEGMENTS AND SUPPORTING THEM FROM THE ENVELOPE WALL, SAID SUPPORT MEMBER COMPRISING A PAIR OF WIRE SPUDS HAVING OVERLAPPING LEG PORTIONS EXTENDING SUBSTANTIALLY AXIALLY OF SAID ENVELOPE AND TERMINATING AT OPPOSITE FREE ENDS IN HELICALLY COILED WIRE PORTIONS OF A COIL DIAMETER AND PITCH CORRESPONDING SUBSTANTIALLY TO THE DIAMETER AND PITCH OF THE SECONDARY COILING OF SAID COILED COIL FILAMENT, SAID HELI-
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