Patent · US Expired

Cardan suspension for microphones for sound ranging in water

US4674075A · kind A · utility

0Cited by

8References

4Claims

0Family size

Assignee

Dornier GmbH · DE

Inventors

Albert J. Dietrich · Irwin, US
Peter Katz · Nashville, US
Josef Vincken · Weitersburg, DE

Key dates

Filing date	Sep 22, 1981
Grant date	Jun 16, 1987
Priority date	—
Expiry date	Sep 22, 2001

Classification

Technology area (CPC G)Physics
CPC primaryG01S7/521
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A hydrophone comprises a microphone pivotally mounted on each end of a gimballed tube. A coiled cable connects each microphone with a housing for a receiver. A tube having an external diameter equal to the inside diameter of the cable coil is inserted partially into the coil. The end of the cable is threaded through a lateral hole in the tube and through the interior of the tube into engagement with the microphone or the housing, as the case may be.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.