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:
Aug. 24, 1976
Filed:
Feb. 12, 1975
Applicant:
Inventors:
Masahiko Tamura, Tokorozawa, JA;
Kiyonori Iwama, Tokorozawa, JA;
Toshikazu Yoshimi, Tokorozawa, JA;
Takashi Oyaba, Tokorozawa, JA;
Assignee:
Pioneer Electronic Corporation, Tokyo, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
310-82 ; 310-85 ; 310-94 ; 310-95 ; 310-96 ; 1791 / ;
Abstract
An electro-acoustic transducer with a piezoelectric diaphragm which is backed with a plurality of different resilient members for imparting a suitable resiliency and/or tension to said diaphragm to highly improve its acoustic characteristics with a simple construction.