Communications – electrical: acoustic wave systems and devices – Signal transducers – Underwater type
Patent
1991-10-07
1992-06-30
Eldred, J. W.
Communications, electrical: acoustic wave systems and devices
Signal transducers
Underwater type
367185, 181110, H04R 900
Patent
active
051269791
ABSTRACT:
An underwater acoustic projector including a Class IV flextension shell, preferably in the form of an ellipsoid, is connected to and driven by two substantially identical electromagnets having mutually opposing pole faces and having a common spatially uniform air gap which is centered between the pole faces. The coils of the two electromagnets are connected in series and when excited by a controlled current, generate a mutually attractive variable reluctance force which causes the pole faces to be attracted toward one another. The shell secured to the electromagnets elastically flexes along one of two mutually perpendicular axes resulting in a volumetric displacement of the outer surface of the shell.
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Kupiszewski Thomas
Marschik David
Montgomery Thomas C.
Rowe, Jr. Linwood M.
Eldred J. W.
Schron D.
Westinghouse Electric Corp.
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