Safety marker for divers

Details Safety marker for divers Safety marker for divers

1981-12-01

1984-08-07

Barefoot, Galen L.

Buoys, rafts, and aquatic devices

Buoy

Marker buoy

441 13, 340984, 116107, 116 26, B63B 4500

Patent

active

044641290

ABSTRACT:
A safety marker for divers comprising detection means (5) designed to emit electrical signals upon the appearance of an element dangerous to the divers within a specific zone around said marker, means (8) for shaping these signals to control signalling means (6, 7) arranged on one hand at the surface to signal the presence of divers and on the other hand below surface to signal the presence of a danger to the divers.

REFERENCES:
patent: 1158967 (1915-11-01), Bellingham
patent: 1181791 (1916-05-01), Nord
patent: 1374943 (1921-04-01), Melvin
patent: 1669055 (1928-05-01), Hogg
patent: 2397844 (1946-04-01), Dewhurst
patent: 2448787 (1948-09-01), Ferrel
patent: 3588803 (1971-06-01), Fleming, Jr. et al.
patent: 3833955 (1974-09-01), Hulbert, Jr.
patent: 4099168 (1978-07-01), Kedjierski et al.

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