Communications – electrical: acoustic wave systems and devices – Signal transducers – Underwater type
Patent
1992-01-17
1993-04-06
Steinberger, Brian S.
Communications, electrical: acoustic wave systems and devices
Signal transducers
Underwater type
367171, 367910, 181142, 116142FP, H04R 1500
Patent
active
052009327
ABSTRACT:
A signalling device with a long audible range is described, which is intended for underwater communication between divers. The device consists of a compact and lightweight horn and a rubber bulb. The horn, which works independently from a diver's supply of breathing air, is filled with water and operated by manually squeezing the rubber bulb.
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