Ring-shell projector

Details Ring-shell projector Ring-shell projector

1989-01-10

1989-08-15

Kyle, Deborah L.

Communications, electrical: acoustic wave systems and devices

Signal transducers

Underwater type

367174, 367167, 310337, 29594, H04R 1700

Patent

active

048582069

ABSTRACT:
A ring-shell projector capable of simple disassembly and reassembly. The underwater transducer has a driving ring and a pair of flexible diaphragms on either side of the ring with their rims attached to the ring. The ring is formed of an array of electrostrictive elements and spacer elements, each spacer element having a pair of radial, outward extensions. A pair of coupling rings are provided each adapted to be positioned between the rim of one flexible diaphragm and a corresponding array of spacer element extensions to provide sealing engagement between the flexible diaphragms and the driving ring. Besides simplifying the repair of a projector, the improved design is more versatile, allowing a single driving ring to be used with different sets of shells, having different resonance frequencies and/or bandwidths. Moreover, an expensive step in the construction of a ring-shell projector is obviated, namely, the bolt holes in the metal staves and the subsequent custom matching of the shell holes.

REFERENCES:
patent: 3845333 (1974-10-01), Holloway
patent: 3992693 (1976-11-01), Martin et al.
patent: 4435794 (1984-03-01), Marshall, Jr. et al.

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