Parabolic reflector including filament locating means

Details Parabolic reflector including filament locating means Parabolic reflector including filament locating means

1976-12-10

1978-11-14

Nelson, Peter A.

Illumination

Light modifier

Reflector

362233, 362306, 362324, 362365, F21V 700

Patent

active

041258908

ABSTRACT:
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: 2026919 (1936-01-01), Stright
patent: 2121310 (1938-06-01), Watts
patent: 3553705 (1971-01-01), Ondrejka
patent: 3621232 (1971-11-01), Hough
patent: 3824013 (1974-07-01), Kidd
patent: 3827782 (1974-08-01), Boudouris et al.

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