Flextensional transducer

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 4384351
SERIAL NO

05968158

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A magnetic drive is provided for a flextensional transducer in order to adapt the flextensional transducer for operation at increased ocean depths without the necessity of liquid filling and complex decoupling devices. In one embodiment an electro-magnetic actuator is positioned between the walls of the flextensional shell and is driven electrically so as to deflect the shell walls outwardly. The magnetic actuator in one embodiment includes a permanent magnet and pole pieces supported on one of the interior walls of the shell, with a moving coil positioned between the pole pieces and supported on a diametrically opposite wall of the shell. In an alternative embodiment, the magnetic actuation may be in the form of a rod of magnetostrictive material between opposing interior walls of the shell, which is actuated by an overwound electrical coil, with the shell being of magnetic material such as magnetic iron.

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Patent Owner(s)

  • SANDERS ASSOCIATES, INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Pagliarini, Jr John A Nashua, NH 3 44
White, Ronald P Amherst, NH 5 107

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