Patent · US Expired

Electro-acoustic transducer arranged within the handset of a telephone instrument

US4845760A · kind A · utility

18Cited by

5References

2Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Erwin Awakowicz · Munich, DE
Kurt Schiller · Mering, DE

Key dates

Filing date	Oct 14, 1986
Grant date	Jul 4, 1989
Priority date	—
Expiry date	Oct 14, 2006

Classification

Technology area (CPC H)Electricity
CPC primaryH04R17/00
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

An electro-acoustic transducer is arranged within the handset of a telephone instrument. The transducer is elastically seated and is seated at a distance from the walls of the handset so that noises caused by the handset are not transmitted onto the transducer.

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