Flashlight with focusing beam assembly

Details Flashlight with focusing beam assembly Flashlight with focusing beam assembly

1988-04-14

1989-04-11

Ostrager, Allen M.

Illumination

Self powered lamp

With movable focusing element

362205, F21L 700

Patent

active

048211567

ABSTRACT:
A flashlight includes a focusing beam assembly which is diposed between an elongate casing holding the batteries and a lens cowl enclosing an open end of the casing. The focusing beam assembly includes a parabolic reflector slidably mounted within a base. A spring urges the reflector forward relative to the base so that a light bulb mounted in the base is normally at a first position relative to the reflector. By tightening the lens cowl on the casing, the reflector can be compressed against the spring relative to the base so that the position of the light bulb relative to the reflector is changed. In this way, the beam width emanating from the flashlight can be adjusted.

REFERENCES:
patent: 4398238 (1983-08-01), Nelson
patent: 4429351 (1984-01-01), Petzl et al.

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