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:
Feb. 27, 2007
Filed:
Feb. 24, 2003
Hiroshi Sugata, Tokyo, JP;
Hirohumi Onohara, Tokyo, JP;
Hiroshi Sugata, Tokyo, JP;
Hirohumi Onohara, Tokyo, JP;
Foster Electric Co., Ltd., Tokyo, JP;
Abstract
A thin speaker having a magnetic circuit () disposed at the front of a cone-like diaphragm, wherein an internal magnetic type magnetic circuit () and a vibration system are supported by a sufficiently strong frame formed of two pieces having an outline of generally disk-shape and partly overlapped concentrically with each other, the acoustic characteristics are prevented from being deteriorated by preventing support bodies (A) for the magnetic circuit () from covering the forward of the sound emitting face of the cone-like diaphragm (), and speaker component parts are formed so as to be assembled by stacking on one jig () from one direction with a specified procedure, whereby an assemblability can be improved.