Incandescent light with parallel grooves encompassing a bulbous

Details Incandescent light with parallel grooves encompassing a bulbous Incandescent light with parallel grooves encompassing a bulbous

1992-08-10

1994-11-08

Yusko, Donald J.

Electric lamp and discharge devices

With optical device or special ray transmissive envelope

313116, 362317, 362340, H01K 132

Patent

active

053630092

ABSTRACT:
An incandescent light has an evacuated envelope with a bulbous portion and a neck portion. The bulbous portion has a multiplicity of parallel grooves circling the bulbous portion longitudinally. The light also has an electrical filament centrally located in the bulbous portion of the envelope.

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