Marine signal device

Buoys – rafts – and aquatic devices – Buoy – Marker buoy

Patent

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Details

B63C 920

Patent

active

052958825

ABSTRACT:
A battery powered signaling device for the rescue of overboard swimmers is arranged in an elongated container in which reciprocal sliding batteries are used as ballast for the erection of the signaling elements above the water line; and further, upon deployed erection gravity supplemented by minor force of a conducting compressible spring that is always in contact with the uppermost positive battery terminal automatically forces the batteries downward to close an electric circuit by making contact between the negative casing of the bottommost battery and conductors leading to activate the signaling subsystem which is a lighting source in a preferred embodiment. When aboard ship, stowage of the signaling device in an inverted orientation permits gravity forces to slide the batteries downward to compress the conducting spring and open the electrical circuit by breaking contact between the battery negative case and the return conductors thereby automatically extinguishing the signal in a wide range of roll and pitch motions of the ship. An end cap, sealed against entry of water, is removable to allow withdrawal of the battery magazine for servicing as required.

REFERENCES:
patent: 2346695 (1944-04-01), Miller
patent: 2355013 (1944-08-01), Rochestie
patent: 2366929 (1945-01-01), Pfeil
patent: 3292039 (1966-12-01), Horino
patent: 3329981 (1967-07-01), Orsino
patent: 3559224 (1971-02-01), Shimizu
patent: 3605149 (1971-09-01), Keats
patent: 4669990 (1987-06-01), McDermott

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