Antenna erector for a towed buoyant cable

Details Antenna erector for a towed buoyant cable Antenna erector for a towed buoyant cable

1992-07-24

1993-12-21

Hajec, Donald

Communications: radio wave antennas

Antennas

Buried underground or submerged under water

343709, 343881, H01Q 134, H01Q 104

Patent

active

052724867

ABSTRACT:
An apparatus is provided for erecting and stowing a communications antenna rom an underwater buoyant cable. In its stowed position, the antenna is approximately parallel to the cable. In its erected position, the antenna is approximately perpendicular to the cable. A hinge, spring biased to maintain the antenna in its stowed position, is connected to the cable and to one end of the antenna. A shape memory alloy actuator is connected to the cable and the antenna. The actuator overcomes the spring bias of the hinge to raise the antenna to its erected position when energy of activation is supplied thereto. Further, the actuator allows the spring bias of the hinge to return the antenna to its stowed position when the energy of activation is removed therefrom.

REFERENCES:
patent: 3587103 (1971-06-01), Lawrie
patent: 4101897 (1978-07-01), Morrison
patent: 4254419 (1981-03-01), Noddin
patent: 5195796 (1993-03-01), Wampler, II

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