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:
Apr. 06, 1999
Filed:
May. 28, 1997
Applicant:
Inventors:
Osamu Takahashi, Yamagata-ken, JP;
Hideyuki Murakami, Yamagata-ken, JP;
Kunio Mitobe, Yamagata-ken, JP;
Assignees:
Pioneer Electronic Corporation, Tokyo, JP;
Tohoku Pioneer Electronic Corporation, Yamagata-ken, JP;
Primary Examiner:
Int. Cl.
CPC ...
G10K / ;
U.S. Cl.
CPC ...
181171 ; 181172 ;
Abstract
A speaker unit has a cylindrical yoke, an annular frame secured to the yoke, and a diaphragm having a central spherical vibrating portion and an annular support portion formed around the vibrating portion and mounted on the annular frame. An annular vertical holding wall is formed on the annular frame, and an annular vertical abutment portion is formed on the annular support portion and abutted against the annular vertical holding wall.