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:
May. 13, 2003
Filed:
Apr. 17, 2000
Applicant:
Inventors:
Charles B. Swope, Coral Springs, FL (US);
Bruce W. Staple, Plantation, FL (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
H04R 1/00 ; C22C 4/300 ;
U.S. Cl.
CPC ...
H04R 1/00 ; C22C 4/300 ;
Abstract
A diaphragm includes a vibratory membrane and at least one nickel titanium memory metal member having a shape that can be mechanically adjusted with a heating signal. The mechanical adjustment of the at least one nickel titanium memory metal member tunes the frequency response of the vibratory membrane in the diaphragm. The at least one nickel titanium memory metal member can be a sheet providing a vibratory membrane, or sheet sections or wire made of nickel titanium memory metal bonded to a vibratory membrane.