Buoys – rafts – and aquatic devices – Buoy – Marker buoy
Patent
1988-02-29
1989-05-30
Basinger, Sherman D.
Buoys, rafts, and aquatic devices
Buoy
Marker buoy
441 13, 441 18, B63B 2210
Patent
active
048346853
ABSTRACT:
An improved buoyant pyrotechnic marine marker of the type comprising a water impermeable jacket enclosing a pyrotechnic candle, an ignition device for the candle consisting of a water actuable battery, a candle igniting squib electrically acutated by the battery and circuitry extending between the battery and the squib. The jacket has a gas emission hole for escape of the combustion gases produced by the candle when ignited. The improvement is characterized by a reversible arming mechanism comprising an open ended casing having walls, within which casing is seated a piston with walls slidably cooperating with those of the casing, for axial movement of the piston with respect to the casing. The casing and piston form a chamber adjacent the pyrotechnic candle within which the battery is seated. Guides are provided on confronting overlapping portions of the walls of the casing and piston to permit the piston to slide between an unarmed position and an armed position. An aperture is located in the walls so that it is closed when the piston is in unarmed position and open when the piston is in armed position. The marker is provided with a switch for the circuitry. The switch is mechanically associated with the piston and the casing so that when the piston is in unarmed position the switch is in position keeping the circuitry open and when the piston is moved to armed position, the switch automatically closes the circuitry. The marker according to the present invention provides easier arming and improved safety over conventional markers of this type. It also provides the ability to dearm the marker, if necessary, and to repeat the arming procedure indefinitely as required.
REFERENCES:
patent: 2791785 (1957-05-01), Metts
patent: 3035285 (1962-05-01), Squires
patent: 3329981 (1967-07-01), Orsino
patent: 3581352 (1971-06-01), Lavin
patent: 3914813 (1975-10-01), Berchielli et al.
patent: 4126907 (1978-11-01), Fish
patent: 4464129 (1984-08-01), Vancheri et al.
Avila Stephen P.
Basinger Sherman D.
Her Majesty the Queen in right of Canada as represented by the
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