Filament structure and method of making such structure

Details Filament structure and method of making such structure Filament structure and method of making such structure

1989-07-24

1990-11-27

Wieder, Kenneth

Electric lamp and discharge devices

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

For filament

313344, 445 32, H01K 118

Patent

active

049738780

ABSTRACT:
A method of making an axial filament structure for a lamp in which the filament is concentric with the axis of the envelope, wherein a hook-like shape (131) is formed in a support member (117) which stretches the filament to its final turns-per-inch ratio.

REFERENCES:
patent: 2696849 (1954-12-01), Flaws, Jr. et al.
patent: 3271093 (1966-09-01), Meier
patent: 3466489 (1969-09-01), Audesse et al.
patent: 3497753 (1970-02-01), Huston, Jr.
patent: 3850489 (1974-11-01), Jarc et al.
patent: 4440646 (1983-08-01), Lohrey
patent: 4556822 (1985-12-01), Lohrey et al.

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