Multiple pinch incandescent lamp

Details Multiple pinch incandescent lamp Multiple pinch incandescent lamp

1975-07-03

1976-09-28

Rolinec, R. V.

Electric lamp and discharge devices

With support and/or spacing structure for electrode and/or...

For plural electrodes of discharge device

313220, 313279, 313273, H01K 128, H01K 302

Patent

active

039834417

ABSTRACT:
An incandescent lamp such as a tungsten filament lamp in which the filament is a series of alternate active coil sections and inactive straight sections. The surrounding glass envelope is correspondingly drawn down around the straight sections to reduce the volume of the envelope and to provide mechanical support for the filament.

REFERENCES:
patent: 2042963 (1936-06-01), Rentschler et al.
patent: 2064354 (1936-12-01), Prouty
patent: 3039015 (1962-06-01), Jolly
patent: 3140417 (1964-06-01), Tietze

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