Life buoy with a radar responder

Details Life buoy with a radar responder Life buoy with a radar responder

1986-06-23

1987-05-26

Blix, Trygve M.

Buoys, rafts, and aquatic devices

Buoy

Marker buoy

441 6, 441 10, 441 11, 248146, 248318, 206305, B63B 2208

Patent

active

046682007

ABSTRACT:
A life buoy equipped with a radar responder adapted to transmit waves in response to radar waves from a searcher, the life buoy comprising a hull member of a rigid plastic hollow construction, the hull member water-tightly accommodating a receiving antenna, a receiver, a transmitting antenna, a transmitter and a battery in a vertical manner such that the center of gravity is located at a distance from and below the center of buoyancy, and the hull member having a downwardly converging shape from under the level of water at least up to the center of buoyancy.

REFERENCES:
patent: 351208 (1886-10-01), Searles
patent: 1530804 (1925-03-01), Anundi
patent: 1655548 (1928-01-01), Honegger et al.
patent: 2189587 (1940-02-01), Lallement
patent: 3081466 (1963-03-01), Bailey
patent: 3207317 (1965-09-01), Moore et al.
patent: 3451079 (1969-06-01), Hagan
patent: 3506841 (1970-04-01), Majkrzak
patent: 4194246 (1980-03-01), Crist
patent: 4195380 (1980-04-01), Higgs
patent: 4431038 (1984-02-01), Rome
patent: 4489116 (1984-12-01), Flood
Weinstein, "How FM was used to find Submarines" FM and Television, May 1946, pp. 22, 23, 24, 48 & 57.

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