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Class Information
Number: 181/152
Name: Acoustics > Diaphragm and enclosure > With horn
Description: Subject matter including a tube of varying sectional area associated with the diaphragm for intensifying the sound waves produced therefrom.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7392880 |
Dual range horn with acoustic crossover |
Jul. 1, 2008 |
| 7319772 |
Speaker device for improving mid/high-range frequencies |
Jan. 15, 2008 |
| 7297238 |
Ultrasonic energy system and method including a ceramic horn |
Nov. 20, 2007 |
| 7278513 |
Internal lens system for loudspeaker waveguides |
Oct. 9, 2007 |
| 7275621 |
Skew horn for a loudspeaker |
Oct. 2, 2007 |
| 7268467 |
Acoustic transducer |
Sep. 11, 2007 |
| 7252176 |
Reflex-ported folded horn enclosure |
Aug. 7, 2007 |
| 7252175 |
Speaker apparatus and manufacturing method of speaker apparatus |
Aug. 7, 2007 |
| 7134523 |
System for integrating mid-range and high-frequency acoustic sources in multi-way loudspeakers |
Nov. 14, 2006 |
| 7027605 |
Mid-range loudspeaker |
Apr. 11, 2006 |
| 6981570 |
Loudspeaker system with common low and high frequency horn mounting |
Jan. 3, 2006 |
| 6952874 |
Two-stage phasing plug system in a compression driver |
Oct. 11, 2005 |
| 6771787 |
Waveguide electroacoustical transducing |
Aug. 3, 2004 |
| 6750758 |
Remotely controlled beeper and method |
Jun. 15, 2004 |
| 6712177 |
Cross-fired multiple horn loudspeaker system |
Mar. 30, 2004 |
| 6650760 |
Loudspeaker |
Nov. 18, 2003 |
| 6647122 |
Loudspeaker drive unit |
Nov. 11, 2003 |
| 6628796 |
Axially propagating mid and high frequency loudspeaker systems |
Sep. 30, 2003 |
| 6621909 |
Horn loudspeaker and loudspeaker systems |
Sep. 16, 2003 |
| 6581719 |
Wave shaping sound chamber |
Jun. 24, 2003 |
| 6574344 |
Directional horn speaker system |
Jun. 3, 2003 |
| 6557664 |
Loudspeaker |
May. 6, 2003 |
| 6519348 |
Speaker apparatus and television set |
Feb. 11, 2003 |
| 6513622 |
Full-range loudspeaker system for cinema screen |
Feb. 4, 2003 |
| 6502662 |
Speaker having a hemispherical vibrator |
Jan. 7, 2003 |
| 6466680 |
High-frequency loudspeaker module for cinema screen |
Oct. 15, 2002 |
| 6411718 |
Sound reproduction employing unity summation aperture loudspeakers |
Jun. 25, 2002 |
| 6394223 |
Loudspeaker with differential energy distribution in vertical and horizontal planes |
May. 28, 2002 |
| 6349792 |
Sound enhancing speaking cabinet for a removable speaker assembly |
Feb. 26, 2002 |
| 6343133 |
Axially propagating mid and high frequency loudspeaker systems |
Jan. 29, 2002 |
| 6334505 |
Optimum edges for speakers and musical instruments |
Jan. 1, 2002 |
| 6125964 |
Electric horn structure with the trumpet body and the resonator in one piece |
Oct. 3, 2000 |
| 6118883 |
System for controlling low frequency acoustical directivity patterns and minimizing directivity discontinuities during frequency transitions |
Sep. 12, 2000 |
| 6116373 |
Acoustic horns for loudspeakers |
Sep. 12, 2000 |
| 6112847 |
Loudspeaker with differentiated energy distribution in vertical and horizontal planes |
Sep. 5, 2000 |
| 6095279 |
Loudspeaker system |
Aug. 1, 2000 |
| 6094495 |
Horn-type loudspeaker system |
Jul. 25, 2000 |
| 6079514 |
Acoustic horn transducer with a conic type diffuser having and exponential profile in wood |
Jun. 27, 2000 |
| 6069844 |
Acoustic annunciator for audio tracking collars |
May. 30, 2000 |
| 6062338 |
Loud speaker enclosure |
May. 16, 2000 |
| 6064745 |
Compression driver phase plug |
May. 16, 2000 |
| 6059069 |
Loudspeaker waveguide design |
May. 9, 2000 |
| 6055320 |
Directional horn speaker system |
Apr. 25, 2000 |
| 6038326 |
Loudspeaker and horn with an additional transducer |
Mar. 14, 2000 |
| 6035051 |
Sound apparatus |
Mar. 7, 2000 |
| 6026928 |
Apparatus and method for reduced distortion loudspeakers |
Feb. 22, 2000 |
| 6028947 |
Lightweight molded waveguide device with support infrastructure |
Feb. 22, 2000 |
| 6016353 |
Large scale sound reproduction system having cross-cabinet horizontal array of horn elements |
Jan. 18, 2000 |
| 6012542 |
Bass amplifying system for radios |
Jan. 11, 2000 |
| 5975236 |
Speaker assembly |
Nov. 2, 1999 |
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