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Class Information
Number:
381/185
Name:
Electrical audio signal processing systems and devices
>
Electro-acoustic audio transducer
>
Plural or compound reproducers
> Having common voice coil
Description:
Subject matter where two or more flexible membranes are driven by a common helix of conductive material carrying an electrical information signal.
Patents under this class:
Patent Number
Title Of Patent
Date Issued
6095278
Base for holding the tweeter of a speaker
Aug. 1, 2000
5471437
Electrodynamic acoustic transducer
Nov. 28, 1995
4914750
Sound transducer
Apr. 3, 1990
4903308
Audio transducer with controlled flexibility diaphragm
Feb. 20, 1990
4567327
Flat-diaphragm transducer and method of manufacturing such a transducer
Jan. 28, 1986
4477699
Mechanical two-way loudspeaker
Oct. 16, 1984
4147899
Broadband electromagnetic sound source with differently tuned diaphragms
Apr. 3, 1979
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