Accession Number:

ADD012193

Title:

Underwater Sound Generator.

Descriptive Note:

Patent,

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s):

• Hugus,George D.
• Young,A. M.

Report Date:

1985-12-03

Pagination or Media Count:

8.0

Abstract:

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.

Descriptors:

• *PATENTS
• *UNDERWATER SOUND GENERATORS
• *HYDRAULIC ACTUATORS
• PISTONS
• ACOUSTIC EMISSIONS
• HYDRAULIC FLUIDS
• UNDERWATER SOUND
• CONTROL SYSTEMS
• HIGH RATE
• LOW FREQUENCY
• FLEXIBLE MATERIALS
• HOUSINGS
• PRESSURIZATION
• FLEXIBLE MATERIALS
• SEALS(STOPPERS)
• MOTION
• SERVOMECHANISMS
• WATERTIGHTNESS
• AXES

Subject Categories:

• Hydraulic and Pneumatic Equipment
• Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE