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:
Oct. 04, 1994
Filed:
Feb. 22, 1993
Applicant:
Inventor:
Nobuhiro Sowa, Kawachinagano, JP;
Assignee:
Sumitomo Rubber Industries, Ltd., Kobe, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ; D03D / ; G10K / ; H04R / ;
U.S. Cl.
CPC ...
428225 ; 428227 ; 428245 ; 428250 ; 428263 ; 428265 ; 428258 ; 428 64 ; 181166 ; 181167 ; 181170 ;
Abstract
The invention is intended to improve the durability and durability of a diaphragm of centrally convex form. A diaphragm comprises a substantially circular woven base fabric (1) formed of warp yarns (1a and 1a') radially extending in centrally convex form from the central region and weft yarns (1b) helically interwoven with the warp yarns (1a), and a rubber member (2) of centrally convex membrane form molded integrally with the base fabric (1).