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:
Apr. 08, 1986
Filed:
Sep. 04, 1979
Applicant:
Inventor:
Louis P Sweany, Carmel, IN (US);
Assignee:
Emhart Industries, Inc., Indianapolis, IN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R / ;
U.S. Cl.
CPC ...
1791 / ; 181166 ;
Abstract
A circular diaphragm typically edge mounted to the housing of an electroacoustic transducer includes a plurality of inwardly curved slots isolated by a circular ridge formed in the diaphragm to thereby increase the compliance of the diaphragm at the center of the circular ridge. Portions of the slots are overlapped to maintain a substantially rectangular section of the diaphragm between the slots. The slotting and rectangular sections of the diaphragm allow the center of the circular ridge to flex in a piston-like manner whereby higher frequency flexural modes of the diaphragm are either reduced or completely eliminated.