Sealed beam lamp including filament locating means

Details Sealed beam lamp including filament locating means Sealed beam lamp including filament locating means

1978-09-15

1979-12-25

Demeo, Palmer C.

Electric lamp and discharge devices

With optical device or special ray transmissive envelope

Reflector

H01K 118, H01K 132

Patent

active

041807553

ABSTRACT:
In a sealed beam incandescent lamp a generally concave reflector member is provided with three or more bosses having flat outer surfaces. The surfaces define a plane perpendicular to the axis of the parabola so that specific points within the parabola can be located with great precision. By using the bosses as reference points, lamp filaments can be accurately placed within the lamp structure, regardless of variations in the reflector member which occur during the manufacturing process.

REFERENCES:
patent: 2880347 (1959-03-01), Flaws, Jr. et al.
patent: 3153168 (1964-10-01), Saranga

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