Patent · US Expired

Electronic acoustic signal emitter

US4841493A · kind A · utility

2Cited by

7References

9Claims

0Family size

Assignee

Diehl GmbH & Co. · DE

Inventors

Alfred Meisner · Nuremberg, DE
Erwin Potthof · Westerburg, DE
Henry Fluhrer · Bretten, DE

Key dates

Filing date	Apr 20, 1988
Grant date	Jun 20, 1989
Priority date	—
Expiry date	Apr 20, 2008

Classification

Technology area (CPC G)Physics
CPC primaryG10K9/122
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

An electronic acoustic signal emitter which includes a piezo-ceramic plate on a metal membrane, and with a circuit board which supports the electronic components. A ring-shaped conductive path with a diameter which is generally as equally large as the metal membrane is arranged on the circuit board in addition to the conductive paths for the components and is electrically connected therewith, which serves as a conductive path and carrier for the metal membrane.

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