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. 13, 2005
Filed:
Mar. 04, 2003
Masanori Ito, Yamagata, JP;
Kunio Mitobe, Yamagata, JP;
Osamu Takahashi, Yamagata, JP;
Pioneer Corporation, Tokyo, JP;
Tohoku Pioneer Corporation, Yamagata, JP;
Abstract
A speaker apparatus includes an elliptical-shaped or a round-edged rectangular-shaped vibration plate; an edge damper portion disposed on an outer peripheral edge portion of the vibration plate; a recessed portion formed between said vibration plate and said edge damper portion, having a caliber of a shape corresponding to the shape of said vibration plate; and an air core voice coil fitted into an interior of said recessed portion. The speaker apparatus further includes a frame for mounting said edge damper portion to support said vibration plate, having a stepped portion and a vertical wall portion; and an edge damper frame arranged on an outer periphery of said edge damper portion, having a support portion placed on the stepped portion and a rising portion being in contact with the vertical wall portion.