Communications – electrical: acoustic wave systems and devices – Signal transducers – Underwater type
Patent
1989-04-28
1996-05-07
Eldred, J. Woodrow
Communications, electrical: acoustic wave systems and devices
Signal transducers
Underwater type
367163, 367174, 310337, H04R 1700
Patent
active
055153437
ABSTRACT:
The invention relates to electro-acoustic transducers comprising a flexible nd sealed transmitting shell referred to as flextensional transducers. A transducer according to the invention comprises one or more electro-acoustic drivers, e.g., a stack of piezoelectric plates 1a, 1b . . . 1n, located inside a flexible and sealed shell. Each piezo-electric driver comprises, at both its ends, a counter-mass coupled mechanically and acoustically with the stack and the ends of the shell by means of an axial threaded rod and two nuts screwed on the ends of the rod. The mass of the two counter-masses and the dimensions of the stack are determined so that the fundamental frequency of the axial oscillations of this mechanical assembly will be close to the natural frequency of the bending oscillations of the shell. An application of the invention is the construction of sonar transmitters.
REFERENCES:
patent: 3274537 (1966-09-01), Toulis
patent: 3974474 (1976-08-01), Izzo
patent: 4072871 (1978-02-01), Wilson
patent: 4845688 (1989-07-01), Butler
Boucher Didier
Pohlenz Charles
Eldred J. Woodrow
Etat Francais as represented by the Delegue General pour l'Armem
LandOfFree
Electro-acoustic transducers comprising a flexible and sealed tr does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electro-acoustic transducers comprising a flexible and sealed tr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electro-acoustic transducers comprising a flexible and sealed tr will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1232805