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Class Information
Number: 340/388.1
Name: Communications: electrical > Audible indication > Diaphragm (e.g., horn or buzzer)
Description: Subject matter wherein the audible sounds are produced by the vibration of an actuated flexible membrane.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7609148 |
Actuator, touch panel display device, electronic apparatus |
Oct. 27, 2009 |
| 7547140 |
Electronic thermometer |
Jun. 16, 2009 |
| 7528702 |
Damage-resistant vibrator assemblies and wireless communications devices incorporating same |
May. 5, 2009 |
| 7408444 |
Sound-reproducing transducer |
Aug. 5, 2008 |
| 7387079 |
Automatic horn shutter |
Jun. 17, 2008 |
| 7385483 |
Termite acoustic detection |
Jun. 10, 2008 |
| 7271706 |
Termite acoustic detection |
Sep. 18, 2007 |
| 7201996 |
Sound generator for a portable device |
Apr. 10, 2007 |
| 7110564 |
Multi-function actuator |
Sep. 19, 2006 |
| 7088223 |
Sound generator for a parking assistance system |
Aug. 8, 2006 |
| 7038576 |
Electropneumatic horn |
May. 2, 2006 |
| 6995659 |
Sound generating transducer |
Feb. 7, 2006 |
| 6982630 |
Vibrating pedestrian push button station |
Jan. 3, 2006 |
| 6972697 |
Controller for automatically manipulating a horn signal for navigational purposes |
Dec. 6, 2005 |
| 6873234 |
Electromagnetic actuator mounting structure |
Mar. 29, 2005 |
| 6867690 |
Active magnetostrictive sensor for automotive horn or occupant weight sensor |
Mar. 15, 2005 |
| 6850138 |
Vibration actuator having an elastic member between a suspension plate and a magnetic circuit device |
Feb. 1, 2005 |
| 6819227 |
Acoustic signal generator, and method for generating an acoustic signal |
Nov. 16, 2004 |
| 6816065 |
Electromechanical horn warning system |
Nov. 9, 2004 |
| 6810128 |
Electromagnetic induction actuator and portable telecommunications equipment |
Oct. 26, 2004 |
| 6809635 |
Mobile terminal using a vibration motor as a loudspeaker and method of use thereof |
Oct. 26, 2004 |
| 6809634 |
Buzzer-driving apparatus |
Oct. 26, 2004 |
| 6795563 |
Speaker for an electronic instrument |
Sep. 21, 2004 |
| 6792126 |
Information processing device and speaker unit applicable thereto |
Sep. 14, 2004 |
| 6777895 |
Vibrating linear actuator |
Aug. 17, 2004 |
| 6724908 |
Method for producing electric-mechanical acoustic converter |
Apr. 20, 2004 |
| 6658133 |
Electromagnetic transducer and portable communicating device |
Dec. 2, 2003 |
| 6653934 |
Electro-magnetic audio transducer for surface-mounted devices |
Nov. 25, 2003 |
| 6600938 |
Vibration actuator and mobile communication terminal |
Jul. 29, 2003 |
| 6593847 |
Planar acoustic converting apparatus |
Jul. 15, 2003 |
| 6570993 |
Electric-mechanical-acoustic converter and method for producing the same |
May. 27, 2003 |
| 6539097 |
Multi-functional vibration actuator |
Mar. 25, 2003 |
| 6492899 |
Electromagnetic converter having superior anti-shock property |
Dec. 10, 2002 |
| 6476710 |
Electromagnetic sound generator |
Nov. 5, 2002 |
| 6433674 |
Electromagnetic sound generator |
Aug. 13, 2002 |
| 6380847 |
Control circuit for a vibrating membrane |
Apr. 30, 2002 |
| 6373958 |
Electrical/mechanical/sound converter and apparatus of electrical/mechanical/sound conversion |
Apr. 16, 2002 |
| 6317033 |
Vehicle horn |
Nov. 13, 2001 |
| 6265965 |
Communication buzzer |
Jul. 24, 2001 |
| 6259797 |
Metal base design for a speaker |
Jul. 10, 2001 |
| 6215391 |
Variable frequency buzzer assembly |
Apr. 10, 2001 |
| 6208237 |
Electro-mechanical and acoustic transducer for portable terminal unit |
Mar. 27, 2001 |
| 6188313 |
Device for generating sound |
Feb. 13, 2001 |
| 6175297 |
Method and circuit for emulating a trumpet contact breaker |
Jan. 16, 2001 |
| 6166624 |
Piezoelectric horn, particularly for vehicles |
Dec. 26, 2000 |
| 6166623 |
Modular alarm assembly |
Dec. 26, 2000 |
| 6147595 |
Structure of buzzer |
Nov. 14, 2000 |
| 6127918 |
Buzzer with a sound film and equalizing or whirlpool sound mechanism |
Oct. 3, 2000 |
| 6081184 |
Self-protected, low emission electronic device for driving a warning horn |
Jun. 27, 2000 |
| 6023518 |
Electromagnetic sound generator |
Feb. 8, 2000 |
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