Accession Number : ADD016349

Title :   Transducers and Methods for Making Same.

Descriptive Note : Patent, Filed 9 Jun 93, patented 28 Jun 94,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Kahn, Manfred ; Kim, Chulho

Report Date : 28 Jun 1994

Pagination or Media Count : 10

Abstract : Elongated electrically nonconducting transducer preforms are made from a stiff resin. The preforms have grooves in their upper and lower surfaces. Transducer elements may be formed from stacked preforms whereby grooves in their upper and lower surfaces form compartments between adjoining stacked preforms. PZT rods are disposed in the grooves disposed on the upper surface of each stacked preform, and a soft resin surrounds the rods and fills the compartment. The method for making the transducer assembly includes the steps of loading by gravity the rods into the upper grooves of the preforms; stacking the loaded preforms so that upper grooves in the lower preform communicate with lower grooves in the upper preform, thus forming cavities; flowing a soft resin around the rods; and curing the soft resin.

Descriptors :   *PLASTICS, *PIEZOELECTRIC TRANSDUCERS, *PATENTS, ASSEMBLY, CAVITIES, CURING, SURFACES, TRANSDUCERS, HYDROSTATIC PRESSURE, SOUND PRESSURE

Subject Categories : Electrical and Electronic Equipment
      Plastics

Distribution Statement : APPROVED FOR PUBLIC RELEASE