Photoflash unit having reflector with openings surrounded by tra

Details Photoflash unit having reflector with openings surrounded by tra Photoflash unit having reflector with openings surrounded by tra

1980-01-24

1981-12-22

Scott, Samuel

Combustion

Illuminating flash device, e.g., photographic bulb, etc.

Fuel charge within sealed transparent casing, e.g., bulb

362350, 362 15, F21K 502, F21V 700

Patent

active

043068553

ABSTRACT:
An improved photoflash unit comprising a circuit board with lamp-firing circuitry thereon, a plurality (e.g., ten) of electrically activated photoflash lamps, and a reflector located between the lamps and circuitry. The lamp-firing circuitry includes at least one switch which is activated by radiant energy emitted from an adjacent photoflash lamp. The improvement comprises providing at least one longitudinal opening (slot) within a cavity portion of the reflector between the activating lamp and switch, and surrounding the opening with a transparent, non-conductive region to thereby assure consistent switch activation by substantially eliminating arcing between the reflector and circuitry.

REFERENCES:
patent: 3738791 (1973-06-01), Cressman
patent: 4036578 (1977-07-01), Herman
patent: 4155110 (1979-05-01), Armstrong et al.

Affiliated with

Also associated with

Rating

Photoflash unit having reflector with openings surrounded by tra does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Photoflash unit having reflector with openings surrounded by tra, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photoflash unit having reflector with openings surrounded by tra will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2365938