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:
Jul. 14, 2026
Filed:
Jan. 10, 2023
Centre National DE LA Recherche Scientifique, Paris, FR;
Universite Du Mans, Le Mans, FR;
Lionel Camberlein, Le Mans, FR;
Antonin Novak, Le Mans, FR;
Pierrick Lotton, Pruillé le Chétif, FR;
Frédéric Polet, Le Mans, FR;
Etienne Gaviot, Le Mans, FR;
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris, FR;
UNIVERSITE DU MANS, Le Mans, FR;
Abstract
A magnet assembly for an electrodynamic loudspeaker driver, comprising a first outer pair of axially magnetized, permanent ring magnets, having a first thickness and a second inner pair of axially magnetized, permanent ring magnets, having a second thickness less than the first thickness, the face of the first inner magnet facing the second inner magnet being offset by a predefined offset distance (Δy) relative to the face of the first outer magnet facing the second outer magnet, and the face of the second inner magnet facing the first inner magnet being offset by the predefined offset distance (Δy) relative to the face of the second outer magnet facing the first outer magnet.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile