Accession Number : ADD003173

Title :   Electroacoustical Transducer.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Cook,Rufus L ; Elkins,James H

Report Date : 25 Nov 1975

Pagination or Media Count : 9

Abstract : The patent describes a reversible electroacoustical transducer, having a circular configuration generated about a longitudinal axis, incorporating a backing plate disposed normal to said longitudinal axis. A first plastic washer is disposed around said longitudinal axis and spatially disposed from said backing plate. A trio of piezoelectric ceramic energy converter rings, having similar outside diameters and different inside diameters, is spatially disposed around and along said longitudinal axis. Another plastic washer is disposed around said longitudinal axis and spatially disposed from said trio of piezoelectric ceramic energy converter rings. And, with the exception of the aforesaid backing plate, all of the aforesaid elements are encapsulated and potted in a polyurethane material, the latter of which is bonded to said backing plate.

Descriptors :   *Electroacoustic transducers, *Patents, Broadband, Encapsulation, Polyurethane resins, Rings, Piezoelectric transducers, Ceramic materials, Sonar transducers

Subject Categories : Electrical and Electronic Equipment
      Acoustic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE