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. 07, 2017
Filed:
Oct. 10, 2013
Eberspaecher Exhaust Technology Gmbh & Co. KG, Neunkirchen, DE;
Georg Wirth, Kirchheim unter Teck, DE;
EBERSPAECHER EXHAUST TECHNOLOGY GMBH & CO. KG, Neunkirchen, DE;
Abstract
The present invention relates to a loudspeaker (″) with a loudspeaker housing ('), a basket () held in the loudspeaker housing (′) and bearing a permanent magnet (), a coil () arranged in a constant magnetic field generated by the permanent magnet () and connected with a diaphragm (), and at least one heat pipe () with a heating zone (Z) and cooling zone (Z), wherein the heating zone (Z) is arranged on the permanent magnet (), and the cooling zone (Z) on the loudspeaker housing (′). The present invention further relates to the use of such a loudspeaker for actively extinguishing or influencing sound waves, and a noise control system () for exhaust systems of a vehicle powered by an internal combustion engine with such a loudspeaker (″).