Electromagnetic marker float release

Details Electromagnetic marker float release Electromagnetic marker float release

1990-10-15

1992-03-31

Swinehart, Ed

Buoys, rafts, and aquatic devices

Buoy

Marker buoy

441 2, 441 23, B63B 2216

Patent

active

051003538

ABSTRACT:
The present invention provides a marker float release that includes a houg; an electromagnet mounted to the housing having an electromagnetic core; and a buoyant element having a permanent magnet. The buoyant element is positioned against the housing so that the permanent magnet is magnetically attracted to the electromagnetic core with sufficient force to hold the buoyant element adjacent to the housing when the housing and the buoyant element are submerged in water by inducing a magnetic field in the electromagnetic core. A flexible line having one end attached to the buoyant element and another end attached to the housing links the buoyant element to the housing. Magnetic field reversing means is operably coupled to the electromagnet for selectively reversing the magnetic field of the electromagnetic core, thereby permitting the buoyant element to be released from the housing.

REFERENCES:
patent: 4262379 (1981-04-01), Jankiewicz
patent: 4664559 (1987-05-01), Berrang
patent: 4731036 (1988-03-01), Ulf

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