Accession Number : ADD001578

Title :   Pressure Release Hemispherical Piezoelectric Type Transducer.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Henriquez,Theodore A ; Tims,Allan C

Report Date : 24 Jun 1975

Pagination or Media Count : 4

Abstract : The patent describes a transducer including a hemispherical piezoelectric element backed by a mass of material and enclosed by a rubber boot. Oneway pressure valves are included in the structure to permit passage of oil into and from the area between the piezoelectric element and the mass to the area between the piezoelectric element and the rubber boot in order to maintain substantially constant pressure within the piezoelectric element.

Descriptors :   *Piezoelectric transducers, *Patents, High pressure, Relief valves, Pressure, Control, Intake valves, Hydrostatic pressure, Hemispheres, Extremely low frequency, Audio frequency

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE