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. 14, 1997
Filed:
Aug. 15, 1995
Applicant:
Inventors:
Yoshio Sakamoto, Hachioji, JP;
Shiro Iwakura, Hamura, JP;
Akio Tanase, Hachioji, JP;
Kaoru Yamazaki, Akigawa, JP;
Assignee:
Kabushiki Kaisha Kenwood, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H04R / ;
U.S. Cl.
CPC ...
381199 ; 381194 ; 381204 ;
Abstract
A loudspeaker capable of improving the efficiency, providing a high performance, and reducing its weight. In a general loudspeaker or a loudspeaker having a repulsion magnetic field type magnetic circuit, the whole or part of the voice coil 1 uses a composite wire A formed by a conductive wire made of conductive material C and a magnetic material F provided at least partially on the surface of the conductive wire, or a composite wire A formed by a magnetic wire made of magnetic material F and a conductive material C provided at least partially on the surface of the magnetic wire.