Communications: electrical – Digital comparator systems
Patent
1983-02-14
1984-12-18
Crosland, Donnie L.
Communications: electrical
Digital comparator systems
340 77, 340 81R, 340 82, 340 84, 340 87, 340 90, 340105, 340114B, 116 63P, 40610, 40612, 40571, B60Q 100
Patent
active
044893060
ABSTRACT:
A self-contained emergency signal has a base unit which contains a battery and an optional radio transmitter and a plurality of telescoping box-like stages which nest into the base member to convert it into a small container for storage and transport. Each of the boxes and the light mounting panels are cut in a special way to permit nesting of the boxes within the base container. When deployed for use the unit is extended into a vertical (or horizontal) array of sequentially illuminated letters which spell out the word "HELP" or a similar word or different color panels, there being a control to sequentially flash strobe lights positioned behind each letter.
REFERENCES:
patent: 2717336 (1955-09-01), Craddock
patent: 2800601 (1957-07-01), Martin et al.
patent: 2905863 (1959-09-01), Martin et al.
patent: 3233352 (1966-02-01), Projector et al.
patent: 3496904 (1970-02-01), Rimkus
patent: 3738309 (1973-06-01), Nicholl
patent: 4006702 (1977-02-01), St. Cyr
patent: 4081788 (1978-03-01), Gaspar
Crosland Donnie L.
Life Light Systems
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