Patent · US Active

Electromagnetic actuator for a speaker or a sound transducer with a high-strength metal connection between the voice coil and the magnet system

US11678123B2 · kind B2 · utility

0Cited by

3References

25Claims

0Family size

Assignee

Sound Solutions International Co., Ltd. · CN

Inventors

Gustav Otto · Wien, AT
Markus Trampert · Wien, AT
Stefan Gebhardt · Weidenberg, DE
Andreas Hintennach · Tamm, DE
Manuel Mefleh · Wien, AT
Ernst Tomas · Strasshof an der Nordbahn, AT

Key dates

Filing date	May 19, 2021
Grant date	Jun 13, 2023
Priority date	—
Expiry date	May 19, 2041

Classification

Technology area (CPC H)Electricity
CPC primaryH04R9/066
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

An electrodynamic actuator for a speaker or an electrodynamic acoustic transducer in general is disclosed, which comprises at least one voice coil, a magnet system and an arm arrangement of a plurality of arms connecting the at least one voice coil and the magnet system or at least a movable part thereof so that a relative movement between these parts is allowed. The arms are made of metal with a fatigue strength of at least 370 N/mm2 or an ultimate tensile strength of at least 1100 N/mm2.

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