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.:

US 7454031 B1

PDF
Full Text
Expired
Date of Patent:
Nov. 18, 2008

Filed:

Mar. 15, 2005
Applicants:

Hiroo Kajiwara, Yamanashi-ken, JP;

Kazumi Miyamoto, Yamanashi-ken, JP;

Inventors:

Hiroo Kajiwara, Yamanashi-ken, JP;

Kazumi Miyamoto, Yamanashi-ken, JP;

Assignee:

Citizen Electronics Co., Ltd., Fujiyoshida-shi, Yamanashi-ken, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04R 25/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A multifunction speaker has a frame made of an insulation material and having a cylindrical portion, a pair of supporting springs secured to the frame and to a magnetic circuit for supporting the magnetic circuit. The magnetic circuit comprises a pole piece having a center pole and a flange on which an annular magnet is mounted. The flange of the pole piece has a pair of positioning projections projected from a periphery of the flange for positioning the magnet.


Find Patent Forward Citations

Kajiwara, Hiroo. (2008). Multifunction speaker (U.S. Patent No. 7454031). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7454031

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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