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:
Jan. 12, 2021
Filed:
Sep. 21, 2017
Mayht Holding B.v., Nieuw-Vennep, NL;
Mattias Jeffrey Scheek, Delft, NL;
Timothy Ruben Scheek, Delft, NL;
Mayht Holding B.V., Nieuw-Vennep, NL;
Abstract
Loudspeaker unit with a membrane () and a plurality of drive units () driving the membrane (). Each of the plurality of drive units () has n voice coils () and at least n+1 magnets (), n being an integer larger than or equal to 1. The magnets () have an axial magnetization and are stacked in axial direction with similar pole parts of adjacent ones of the at least n+1 magnets facing each other. The at least n+1 magnets () are separated in the stack over a magnet separation distance (d), the magnet separation distance (d) being substantially equal to a width (w) in the stack direction of the at least n voice coils ().