Research/Patents/US 5243567
US 5243567Tier 1 — UAP Program Assignee

SONAR BEAM SHAPING WITH AN ACOUSTIC BAFFLE

Assignee

Northrop

Filed as: NORTHROP GRUMMAN CORPORATION

Filed

Mar 15, 1977

Granted

Sep 7, 1993

Location

MD US

Abstract

A side-looking sonar transducer which has sound absorbing material extending forwardly of the active surface of the transducer elements to diminish the acoustic response over a predetermined zone for reducing the effect of erroneous reflection signals. The surface of the sound absorbing material has a series of sharp peaks and valleys.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Aug 25, 1982

Rescinded

Mar 31, 1993

Duration

10 years, 7 months

Inventor

  • 1LARRY T. GINGERICH

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Back to patent indexSource: USPTO 35 USC §181 secrecy order records