Accession Number : ADD000028

Title :   High-Power Underwater Electroacoustic Transducer for the Infrasonic and Low Audio-Frequency Range.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Kieser,Robert J ; Bass,John R ; Donovan,John E

Report Date : 18 Sep 1973

Pagination or Media Count : 9

Abstract : This invention is directed to underwater transducers. The transducer includes in combination a magnet mass and a moving coil. A movable piston having the moving coil/coil form secured thereto is secured in position by compliant material and is provided with a piston centering pin coaxial with the magnet which keeps the moving coil centered in the magnetic gap throughout the entire length of the piston displacement. Suitable stops are provided to limit the travel of the piston. The piston is surrounded with a suitable oil or other such fluid which transmits motion to or for the surrounding water.

Descriptors :   *Electroacoustic transducers, *Patents, Underwater equipment, Extremely low frequency, High power

Subject Categories : Electrical and Electronic Equipment
      Acoustic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE