Accession Number : ADD003185
Title : Transducer.
Descriptive Note : Patent,
Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C
Personal Author(s) : Cook,Rufus L ; Warner,Henry L
Report Date : 17 Feb 1976
Pagination or Media Count : 8
Abstract : The patent describes an electroacoustical transducer incorporating a metallic housing having an aperture located in the wall thereof. A plurality of shutters are rotatably mounted on said housing for effectively and timely opening and closing predetermined portions of said aperture. A plastic support member is disposed within said housing, and a slot is located therein in alignment with said aperture. A wooden frame is disposed in said slot in such manner as to effect a semiresilient lining therefor, and an electroacoustical energy converter element is disposed within said frame lining. A shutter actuator, either programmed or manually operated, is connected to said plurality of shutters for respectively moving them in such manner as to effect predetermined openings and closings of the aforesaid aperture.
Descriptors : *Electroacoustic transducers, *Patents, Underwater equipment, Sonar transducers, Multiple operation, Tuning devices, Piezoelectric materials
Subject Categories : Electrical and Electronic Equipment
Acoustic Detection and Detectors
Distribution Statement : APPROVED FOR PUBLIC RELEASE