Last-flash indicator switch in photoflash array

Details Last-flash indicator switch in photoflash array Last-flash indicator switch in photoflash array

1976-09-08

1977-09-13

Hix, L. T.

Buckles, buttons, clasps, etc.

354128, 354132, 431 95A, G03B 1502

Patent

active

040484874

ABSTRACT:
A multiple lamp photoflash array of the FlipFlash type having flash-sequencing circuitry for causing the lamps to flash one at a time in response to firing pulses applied to the array. All lamp circuits except for the last-to-flash lamp provide an open circuit after lamp flashing, and the last-to-flash lamp provides a short circuit or low impedance after flashing to function as a last-flash indicator switch.

REFERENCES:
patent: 3380357 (1968-04-01), Harvey
patent: 3532931 (1970-10-01), Cote et al.
patent: 3583841 (1971-06-01), Harvey
patent: 3668421 (1972-06-01), Bowers
patent: 3692995 (1972-09-01), Wagner
patent: 3707903 (1973-01-01), Weber
patent: 3714407 (1973-01-01), Bowers
patent: 3918884 (1975-11-01), Bok et al.
patent: 3935442 (1976-01-01), Hanson

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