Communications – electrical: acoustic wave systems and devices – Signal transducers – Underwater type
Patent
1978-07-14
1979-09-18
Tudor, Harold J.
Communications, electrical: acoustic wave systems and devices
Signal transducers
Underwater type
367180, 367155, H04B 1300
Patent
active
041684826
ABSTRACT:
A single acoustic filter plate-lens unit for providing directional, frequy independent beam-forming. The unit comprises a liquid container having a curved and radially tapered stainless steel plate on one side and thin metallic shell on the other. An acoustically slow liquid fills the space between the plates. The unit can be used in conjunction with a retina transducer system for conversion of acoustic signals into electrical signals and vice versa.
REFERENCES:
patent: 2300251 (1942-10-01), Flint
patent: 3928839 (1975-12-01), Warner et al.
Lall Prithvi C.
McGill Arthur A.
Sciascia Richard S.
The United States of America as represented by the Secretary of
Tudor Harold J.
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