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:
Sep. 07, 1999
Filed:
Oct. 30, 1996
Daniel P Anagnos, Grandview, NY (US);
Sony Corporation, Tokyo, JP;
Sony Electronics, Inc., Park Ridge, NJ (US);
Abstract
A loudspeaker enclosure having a constrained layer damping system for minimizing the propagation of vibrations and controlling the resonant modes of the enclosure. The enclosure has a front baffle board on which a plurality of transducers are mounted, and a plurality of other walls mounted to the baffle board to form a cabinet structure. The front baffle board comprises an interior substrate, an exterior substrate, and a constrained layer damping material sandwiched between and bonded to the two substrates. The constrained layer damping material comprises an energy absorbing thermoplastic alloy having a very high material loss factor. The other walls of the enclosure also comprise an interior substrate and an exterior substrate with a constrained layer damping material sandwiched therebetween. An extensional damping material may also be bonded to an interior surface of the interior substrates to further control vibrations in the enclosure.