ClassID:

231983

H04R7/20 - page 2 - CPC Classification

Classification description:

Diaphragms for electromechanical transducers ; Cones; Mounting or tensioning of diaphragms or cones at the periphery Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands

Recent Application in this class:
#301
20060096803
2006-05-11

Loudspeaker having an outer edge

#302
20060088182
2006-04-27

Speaker apparatus

#303
20060072248
2006-04-06

Electro-dynamic exciter

#304
20060062419
2006-03-23

Audio speaker

#305
20050226456
2005-10-13

Loudspeaker edge

#306
20050194203
2005-09-08

Planar speaker edge

#307
20050185817
2005-08-25

Tangential stress reduction system in a loudspeaker suspension

#308
20050180588
2005-08-18

Transducer with deformable corner

#309
20050157905
2005-07-21

Loudspeaker

#310
20050157900
2005-07-21

Acoustic passive radiator rocking mode reducing

#311
20050147274
2005-07-07

Acoustic device

#312
20050147273
2005-07-07

Acoustic device

#313
20050123154
2005-06-09

Speaker gasket and its manufacturing method, and speaker device

#314
20050111689
2005-05-26

Loudspeaker with assembly and performance improvements

#315
20050025331
2005-02-03

Loudspeaker coil suspension system

#316
20050013461
2005-01-20

Loudspeaker

#317
20050013452
2005-01-20

Loudspeaker based on the " center of percussion" or the " sweet spot" point, with gas filled hollow oscillating member and fluid flooded voice coil

#318
20050002542
2005-01-06

Apparatus and method for creating acoustic energy in a receiver assembly with improved diaphragms-linkage arrangement

#319
18330146
2024-04-23

Techniques for loudspeaker constrained acoustic modulator (CAM)

#320
17566001
2023-06-06

Acoustic receivers with multiple diaphragms

#321
17563029
2023-04-25

Speaker

#322
16507354
2020-06-09

Coil spring suspension system for loudspeaker

#323
14974499
2016-12-06

Acoustic sensing apparatus and method of manufacturing the same