Electric incandescent lamp with cylindrical filament

Details Electric incandescent lamp with cylindrical filament Electric incandescent lamp with cylindrical filament

1977-05-23

1979-03-13

Smith, Alfred E.

Electric lamp and discharge devices

Incandescent lamps

313217, 313343, 313349, 313356, H01K 114

Patent

active

041444736

ABSTRACT:
An incandescent lamp has a hollow cylindrical filament which is constructed from transversal strips each traversing at least for the greater part the circumference of the cylinder at a distance from each other with longitudinal strips connecting the transversal strips together. The strips constitute electrically parallel current paths.
Such filaments have improved resistance to deformation a low sensitivity for evolving hot spots, a low weight and compactness.

REFERENCES:
patent: 3788721 (1974-01-01), Vause

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