Patent · US Active

Hearing apparatus with a special charging circuit

US8098862B2 · kind B2 · utility

6Cited by

1References

10Claims

0Family size

Assignee

Siemens Audiologische Technik GmbH · DE

Inventors

Frank Koch · Osterode, DE
Thomas Lotter · Koblenzer Straße, DE
Uwe Rass · Nuremberg, DE

Key dates

Filing date	Mar 20, 2008
Grant date	Jan 17, 2012
Priority date	—
Expiry date	Nov 17, 2030

Classification

Technology area (CPC H)Electricity
CPC primaryH04R2225/61
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

Provisions to charge the battery of a hearing apparatus without having to remove the battery from the housing are provided. A hearing apparatus separates charging contacts, which are disposed on the surface of the housing and serve to charge the battery, from the battery and to connect the battery to an amplifier circuit, when the battery is not being charged. Otherwise, when the battery is being charged, the hearing apparatus connects the charging contacts to the battery and separates the battery from the amplifier circuit. This double switching function means that the amplifier circuit is protected from charging power surges and also in the normal operating state of the hearing apparatus electrochemical reactions at the charging contacts are avoided.

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