Device for transmitting acoustic waves through a liquid medium

Details Device for transmitting acoustic waves through a liquid medium Device for transmitting acoustic waves through a liquid medium

1977-03-22

1979-02-13

Tudor, Harold J.

Communications: electrical

Selective

Pulse responsive actuation

181120, H04B 1300

Patent

active

041398351

ABSTRACT:
A device for transmitting acoustic waves through a liquid medium in which it is submerged comprising two movable assemblies including respectively members provided with first contact walls and delimiting with a sealing membrane a water tight enclosure, and members provided with second contact walls which are the armatures of an electro-magnet, the respective members being so arranged that when the first contact walls are in contact, the second contact walls are spaced apart and conversely, pressure actuated means for moving the first contact walls apart from each other and releasable locking means including an energizing coil for maintaining the armatures of the electro-magnet in spaced apart relationship.

REFERENCES:
patent: 3564492 (1971-02-01), Magneville et al.
patent: 3610366 (1971-10-01), Goldberg
patent: 3613824 (1971-10-01), Loper
patent: 3792425 (1974-02-01), Magneville
patent: 3833087 (1974-09-01), Cholet

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