Patent · US Expired

Loudspeaker housing forming a closed, damped system, particularly for automotive installation

US4161995A · kind A · utility

31Cited by

7References

19Claims

0Family size

Assignee

Blaupunkt-Werke GmbH · DE

Inventors

Gottfried Pohlmann
Egon Schneider · Neutraubling, DE

Key dates

Filing date	Aug 8, 1977
Grant date	Jul 24, 1979
Priority date	—
Expiry date	Aug 8, 1997

Classification

Technology area (CPC H)Electricity
CPC primaryH04R2499/13
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

The loudspeaker is mounted within a hollow, essentially tubular body so that the loudspeaker structure extends into the tubular body. The tubular body is at least in part insertable into an opening of a vehicle panel, such as a dashboard, rear window shelf, or the like. The rear of the panel is closed off by a housing body, shaped to leave a space or chamber behind the tubular body; preferably, the housing body is made of a foam material, or includes, at the inside, a foam rubber material which may be of open pore structure at least in the region facing the tubular body.

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