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:
Mar. 04, 1980
Filed:
Nov. 27, 1978
Applicant:
Inventors:
Atsushi Matsuda, Tokyo, JP;
Jun Kishigami, Urawa, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H04R / ;
U.S. Cl.
CPC ...
1791 / ;
Abstract
A dynamic loudspeaker of the plane vibrating-plate, multi-point drive type has a support structure in the rear of the plane plate or diaphragm supporting the forward ends of a plurality of magnetic drivers to a frame. Connecting arms and diagonal connecting arms in the support structure stiffen the support structure to reduce vibration-induced flexure. The rear most ends of the magnetic drivers are also braced together and a transverse brace is connected between the structures at the forward and rear ends of the magnetic drivers.