Patent · US Active

Loudspeaker

US9191734B2 · kind B2 · utility

2Cited by

3References

25Claims

0Family size

Assignee

Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

Thomas Sporer · Ergolding, DE
Daniel Beer · Martinroda, DE
Stephan Mauer · Ilmenau, DE

Key dates

Filing date	Aug 16, 2011
Grant date	Nov 17, 2015
Priority date	—
Expiry date	Oct 11, 2033

Classification

Technology area (CPC H)Electricity
CPC primaryH04R2205/022
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A loudspeaker includes a two-dimensional array of non-housed individual speakers having flat shapes. The non-housed individual speakers are accommodated within a flat housing, the depth of the housing being smaller than 5 cm, for example. Non-housed individual speakers used are advantageously headphone capsules and/or miniature loudspeakers having diaphragm diameters of less than 5 cm.

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