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:
Mar. 19, 2002
Filed:
Apr. 17, 1997
Applicant:
Inventors:
Stefan Geisenberger, Straubing, DE;
Gerhard Krump, Schwarzach, DE;
Assignee:
Harman Audio Electronic Systems GmbH, Straubing, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04R 1/102 ; H04R 9/06 ;
U.S. Cl.
CPC ...
H04R 1/102 ; H04R 9/06 ;
Abstract
A loudspeaker ( ) according to the invention is presented, which contains at least one radially magnetized permanent magnet ( ), and whose receiving part is made of a paramagnetic or diamagnetic material. Such loudspeakers ( ) can be constructed in a very simple and compact manner. With the further development of loudspeakers ( ) able to utilize the stray flux from radially magnetized permanent magnets ( ), it is possible to produce derivations with two diaphragms ( ′) with identical reproduction frequencies, without great cost.