Sequentially actuated flashing light apparatus

Details Sequentially actuated flashing light apparatus Sequentially actuated flashing light apparatus

1978-02-22

1980-05-13

Caldwell, Sr., John W.

Communications: electrical

Systems

Periodic or flashing

340 28, 340114B, G03B 538, H05B 3909

Patent

active

042030919

ABSTRACT:
The present invention relates to a flashing light apparatus comprising a plurality of flashing light units, connected in series, wherein each unit is arranged to produce a short flash in a predetermined time slot. The time slots allotted to a plurality of these units are so choosen that the first unit is first activated, and after a predetermined time, or immediately thereafter, the second unit is then activated, etc. This arrangement gives the impression of a "travelling flash". Each flashing light unit has its own oscillator, to control the time delay between adjacent time slots, a control circuit, to activate a switching device, and a monostable multivibrator, adapted to produce output pulses of a definite duration. The units may be connected in series, parallel or branched and the first unit serves as a "master unit" while the other units act as "slave units". When a the connecting link between two slave units is broken, one of the slave units automatically becomes a master unit.

REFERENCES:
patent: 2797367 (1957-06-01), Scott et al.
patent: 3488558 (1970-01-01), Grafton
patent: 3488558 (1970-01-01), Grafton
patent: 3519984 (1970-07-01), Zychal
patent: 3781853 (1973-12-01), Jacobs
patent: 3787867 (1974-01-01), Dodge et al.
patent: 3846672 (1974-11-01), Doughty
patent: 3938080 (1976-02-01), Hulme
patent: 4024491 (1977-05-01), Pellerin et al.

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