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. 16, 1999
Filed:
Apr. 15, 1997
William Neal House, Bloomington, IN (US);
Harman International Industries, Incorporated, Northridge, CA (US);
Abstract
A loudspeaker comprises a diaphragm having an outer perimeter, a voice coil, a frame for supporting the diaphragm, and a motor stator providing a magnetic field in which the voice coil is supported. Current through the voice coil reciprocates the voice coil and the diaphragm coupled thereto. Ribs extend outwardly at the perimeter of the diaphragm to mount the voice coil to the perimeter of the diaphragm. The motor stator includes at least one inner flux return providing slots through which the ribs extend between the perimeter of the diaphragm and the voice coil. Alternatively, a loudspeaker comprises a diaphragm having an outer perimeter and a central axis defining between them a relatively inner region of the diaphragm extending outwardly from the axis and a relatively outer region of the diaphragm extending inwardly from the perimeter, a voice coil, a frame for supporting the diaphragm, and a motor stator providing a magnetic field in which the voice coil is supported. Current through the voice coil reciprocates the voice coil and the diaphragm coupled thereto. Ribs extend outwardly from the inner region and inwardly from the outer region to support the voice coil between the inner and outer regions. The motor stator includes at least one inner and/or outer flux return providing slots through which the ribs extend.