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Underwater Sound Generator.
DEPARTMENT OF THE NAVY WASHINGTON DC
Pagination or Media Count:
This patent discloses an underwater sound generator comprising dual opposed pistons in a housing. Dynamic seal assemblies of flexible waterproof material are compressed against the peripheries of the pistons and the housing and form a watertight seal that allows axial motion. Controllers regulate the delivery of pressurized hydraulic fluid to hydraulic actuators which drive the axial motion of the pistons according to a predetermined variation.
APPROVED FOR PUBLIC RELEASE