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:
Jan. 27, 1976
Filed:
Feb. 21, 1975
Applicant:
Inventor:
Sigeyuki Koga, Hachioji, JA;
Assignee:
Trio Kabushiki Kaisha, Tokyo, JA;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04R / ; H04R / ;
U.S. Cl.
CPC ...
1791 / ; 1791 / ; 179180 ; 181173 ;
Abstract
A speaker assembly comprising a dome shaped diaphragm, the cross section along the plane containing the base of the diaphragm having an oval contour; a voice coil connected to the diaphragm; magnetic means operatively associated with the voice coil; and support means for supporting the diaphragm, voice coil and magnetic means.