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:
Jan. 17, 1989
Filed:
Nov. 25, 1987
Yoshio Sakamoto, Hachiohji, JP;
Kaoru Yamazaki, Akikawa, JP;
Kabushiki Kaisha Kenwood, Tokyo, JP;
Abstract
An electroacoustic converter comprising a magnetic circuit including a center pole, a magnet and a top plate with an upper side surface of the center pole being space from an adjacent side of the top plate. The top plate includes an incision on a horizontal rear surface thereof and a horizontal part adjacent to the incision. A diaphragm system is provided over the top of the center pole and includes a dome-like diaphragm, a cylinderical bobbin on which a voice coil is wound, and a brim-like suspension which extends outwardly from the bobbin. A guide ring is bridged between a ledge on a vertical surface of the center pole and the incision of the top plate. The periphery of the suspension of the diaphragm system is fixedly sandwiched between the horizontal part of the guide ring and the horizontal surface of the top plate.