Research/Patents/US 5438553
US 5438553Tier 1 — UAP Program Assignee

TRANSDUCER

Assignee

Raytheon

Filed as: RAYTHEON COMPANY, A DE CORP.

Filed

Aug 22, 1983

Granted

Aug 1, 1995

Location

BILLERICA MA US

Abstract

A transducer having an energy conversion medium for converting changes in applied mechanical energy into corresponding changes in thermal energy and a pyroelectric material in thermal energy transfer relationship with the energy conversion medium for producing an electrical output substantially in response to the converted thermal energy. Such transducer is particularly useful as a hydrophone in detecting low frequency sound waves emitted by, or reflected from, underwater objects.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Nov 22, 1983

Rescinded

Feb 1, 1995

Duration

11 years, 2 months

Inventor

  • 1DAVID T. WILSON

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