The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 14, 2001
Filed:
Dec. 18, 1998
Wolfgang Bachmann, Grevenbroich, DE;
Gerhard Krump, Schwarzach, DE;
Hans-Jürgen Regl, Düsseldorf, DE;
Harman Electronic Systems GmbH, Straubing, DE;
Abstract
The invention presents a sound reproduction device which operates in accordance with the flexural wave principle. Such devices have in common that a panel,is provided in which flexural waves are produced by a drive arrangement,. The drive arrangements,in the state of the art are connected to one of the surfaces of the panel,and are held by a support structure which functions as a countersupport. Such support structures either hinder the propagation of the flexural waves along the surface of the panel,and/or lead to an increase in the constructed depth of such a sound reproduction device. To avoid these disadvantages of the state of the art, the drive system,is located in a cutout,of the panel,. This not only has the additional advantage that the appearance of both surfaces of the panel,can be standardized, but also that by weakening the panel,in the area of cutout,, the output for the production of flexural waves is reduced, or that the same output can be used to produce the oscillations required for bass sound reproduction.