Communications – electrical: acoustic wave systems and devices – Signal transducers – Underwater type
Patent
1988-10-11
1989-09-19
Steinberger, Brian S.
Communications, electrical: acoustic wave systems and devices
Signal transducers
Underwater type
367175, H04R 1300
Patent
active
048687995
ABSTRACT:
A deep-water low-frequency transducer employs a collapsible air chamber to equalize the internal transducer air pressure with the external hydrostatic pressure at the submerged operating depth. A capsule containing a highly pressurized gas is mounted inside the collapsible air chamber and an automatic valve mechanism releases the gas to inflate the collapsed air chamber at a predetermined depth, beyond which any further reduction in the air volume would impair the operation of the transducer. With the collapsed air chamber restored to its original full volume, the transducer will operate satisfactorily at increased water depths.
REFERENCES:
patent: 3501741 (1970-03-01), Wallen et al.
patent: 3803544 (1974-04-01), Wallen et al.
patent: 4763307 (1988-08-01), Massa
Kurlat Gitta M.
Massa Donald P.
Massa Frank
Steinberger Brian S.
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