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. 15, 2023
Filed:
Jan. 05, 2022
Sound Solutions International Co., Ltd., Beijing, CN;
Franz Heidinger, Unterwaltersdorf, AT;
Manuel Mefleh, Vienna, AT;
Gustav Otto, Vienna, AT;
Friedrich Reining, Vienna, AT;
Michael Schoffmann, Baden, AT;
Sound Solutions International Co., Ltd., Beijing, CN;
Abstract
An electrodynamic actuator () is disclosed, which is designed to be connected to a plate like structure () and which comprises a coil arrangement () with at least one voice coil (), a magnet system () with a movable magnetic circuit part () and a static magnetic circuit part (F) and a spring arrangement () coupling the static magnetic circuit part (F) to the movable magnetic circuit part () and allowing a relative movement between the same. Both the spring arrangement () and the magnet system () provide a total restoring force (F) directed towards an idle position (P) of the movable magnetic circuit part (). A part of a total restoring force gradient (ΔF/Δz) caused by the magnet system () is at least 10% of the total restoring force gradient (ΔF/Δz) in said idle position (P) of the movable magnetic circuit part (). In addition, an output device () with the electromagnetic actuator () mounted to a plate like structure () is disclosed.