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. 26, 1985
Filed:
Jun. 20, 1983
Peter Fatovic, Ottawa, CA;
Northern Telecom Limited, Montreal, CA;
Abstract
The invention provides an enclosure arrangement or a loudspeaker adapted to be mounted in a voice communication terminal. The invention provides primary and secondary enclosures for the loudspeaker. The primary enclosure comprises a piece of resilient open cell foam material having one face provided with a concavity suitable for receiving the spider and the voice coil structure of the loudspeaker. The peripheral edge of the one face of the foam material is secured to the peripheral edge of the spider and the outer surface of the foam material has a flexible layer of substantially air-impermeable material, whereby the loudspeaker is provided with an attached flexible enclosure. The secondary enclosure comprises the housing in which the loudspeaker is mounted. The flexibility of the primary enclosure allows energy to be coupled between itself and the secondary enclosure.