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Class Information
Number: 381/423
Name: Electrical audio signal processing systems and devices > Electro-acoustic audio transducer > Electromagnetic (e.g., dyynamic) > Specified diaphragm shape or structure
Description: Subject matter including a flexible membrane with a particular geometrical contour or made of a specified material.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7418109 |
Diaphragm structure of light sound converter |
Aug. 26, 2008 |
| 7416047 |
Diaphragm for a loudspeaker with a moving coil |
Aug. 26, 2008 |
| 7391879 |
Loudspeaker |
Jun. 24, 2008 |
| 7388964 |
Loudspeaker, and module and electronic apparatus using the loudspeaker |
Jun. 17, 2008 |
| 7386145 |
Loudspeaker system, method and apparatus of manufacturing the same |
Jun. 10, 2008 |
| 7360499 |
Helmholtz resonator type marine signal |
Apr. 22, 2008 |
| 7319766 |
In-wall loudspeaker |
Jan. 15, 2008 |
| 7319772 |
Speaker device for improving mid/high-range frequencies |
Jan. 15, 2008 |
| 7315628 |
Diaphragm for loud speaker and loud speaker employing it |
Jan. 1, 2008 |
| 7306073 |
Electroacoustic transducer comprising a membrane with a middle area comprising stiffening grooves |
Dec. 11, 2007 |
| 7301213 |
Acoustic sensor |
Nov. 27, 2007 |
| 7274798 |
Speaker device |
Sep. 25, 2007 |
| 7246425 |
Method of manufacturing a speaker |
Jul. 24, 2007 |
| 7245729 |
Loudspeaker |
Jul. 17, 2007 |
| 7236602 |
Device for actuating a membrane and a vehicle comprising a device for actuating a membrane |
Jun. 26, 2007 |
| 7236608 |
Conductors for electro-dynamic loudspeakers |
Jun. 26, 2007 |
| 7233681 |
Electromagnetic transducer with eccentrically mounted voice coil former |
Jun. 19, 2007 |
| 7218744 |
Piezo-electric speaker |
May. 15, 2007 |
| 7212648 |
Loudspeaker system in which a diaphragm panel is driven by an electromechanical acoustic converter |
May. 1, 2007 |
| 7190804 |
Speaker apparatus |
Mar. 13, 2007 |
| 7174990 |
Tangential stress reduction system in a loudspeaker suspension |
Feb. 13, 2007 |
| 7177440 |
Electromagnetic transducer with asymmetric diaphragm |
Feb. 13, 2007 |
| 7155021 |
Loudspeaker having an acoustic panel and an electrical driver |
Dec. 26, 2006 |
| 7146021 |
Whizzer cone for loudspeaker for producing uniform frequency response |
Dec. 5, 2006 |
| 7136501 |
Acoustically enhanced electro-dynamic loudspeakers |
Nov. 14, 2006 |
| 7120263 |
Bending wave acoustic radiator |
Oct. 10, 2006 |
| 7103195 |
Speaker unit |
Sep. 5, 2006 |
| 7099488 |
Planar speaker wiring layout |
Aug. 29, 2006 |
| 7099489 |
Twin magnetic loop multifunctional vibrator-speaker transducer |
Aug. 29, 2006 |
| 7095869 |
Loudspeaker coil suspension system |
Aug. 22, 2006 |
| 7092544 |
Diaphragm for electroacoustic transducer and method of making the same |
Aug. 15, 2006 |
| 7079661 |
Speaker for super-high frequency range reproduction |
Jul. 18, 2006 |
| 7072485 |
Method for manufacturing diaphragm for loudspeaker, diaphragm for loudspeaker made thereby, and loudspeaker using the same |
Jul. 4, 2006 |
| 7062051 |
Acoustic device |
Jun. 13, 2006 |
| 7050600 |
Speaker system, mobile terminal device, and electronic device |
May. 23, 2006 |
| 7045768 |
Displacement/quantity of light converter |
May. 16, 2006 |
| 7043045 |
Speaker |
May. 9, 2006 |
| 7043046 |
Method for manufacturing an electroacoustical transducer comprising a membrane configuration |
May. 9, 2006 |
| 7031488 |
Super tweeter |
Apr. 18, 2006 |
| 7031487 |
Tabbed speaker frame with oversized diaphragm |
Apr. 18, 2006 |
| 7027609 |
Diaphragm for speakers |
Apr. 11, 2006 |
| 7020302 |
Speaker, speaker module, and electronic equipment using the speaker module |
Mar. 28, 2006 |
| 7010143 |
Rectangular panel-form loudspeaker and its radiating panel |
Mar. 7, 2006 |
| 6995659 |
Sound generating transducer |
Feb. 7, 2006 |
| 6996246 |
Speaker apparatus |
Feb. 7, 2006 |
| 6993146 |
Speaker having spacer ring inside frame |
Jan. 31, 2006 |
| 6973194 |
Speaker |
Dec. 6, 2005 |
| 6968071 |
Speaker having magnetic member installed on diaphragm |
Nov. 22, 2005 |
| 6956957 |
Loudspeakers |
Oct. 18, 2005 |
| 6929091 |
Planar diaphragm loudspeaker and related methods |
Aug. 16, 2005 |
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