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. 29, 2002
Filed:
Sep. 25, 1995
Guy D. Billoud, Apex, NC (US);
Lord Corporation, Cary, NC (US);
Abstract
An active noise control system ( ) which generates via an electronic controller ( ) a canceling signal(s) which are responsive to a signal from an error sensor(s) ( ) to drive a speaker ( ) or array of speakers. Each speaker ( ) is contained within an enclosure ( ) and is inversely and rigidly mounted therein. The enclosure ( ) attaches to the trim panels ( ) attached to the closed structure ( ) and the canceling sound wave form is directed primarily toward the interior surface ( ) of the trim ( ). Preferably, the speaker(s) ( ) are flexibly suspended with mounts ( ) to the trim ( ). The enclosure ( ) preferably includes planar wave guide means such as escapeways ( ) for initially directing the canceling sound wave form (anti-noise) in a plane substantially parallel to the surface of the trim ( ).