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:
Nov. 05, 1985
Filed:
Jan. 17, 1984
Applicant:
Inventors:
Kiyoaki Suzuki, Zama, JP;
Hidetsugu Suzuki, Sagamihara, JP;
Katsuhiro Onuki, Tokyo, JP;
Isami Nomoto, Yokohama, JP;
Yoshiaki Fukuda, Yokoze, JP;
Takeshi Sato, Yokoze, JP;
Assignees:
Victor Company of Japan, Yokohama, JP;
Mitsubishi Mining & Cement Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G10K / ; H04R / ;
U.S. Cl.
CPC ...
181167 ; 1791 / ; 501119 ;
Abstract
A loudspeaker diaphragm comprising a molded, sintered ceramic body is described. The body is made of ceramic crystalline particles whose maximum size is below 1/5 time a thickness of the body which is in the form of a dome or cone. The dome- or cone-shaped diaphragm may have a flange along an opening side thereof in order to prevent deformation as may occur during firing.