Resources Contact Us Home
Browse by Category: Main > Communications
Class Information
Number: 181/195
Name: Acoustics > Sound-modifying means > Intensifying horn > Particular shape of the horn > Wide angle annular outlet
Description: Subject matter wherein the horn has a mouth from which sound emanates and has at least a quarter circle silhouette when viewed from one of its sides.

Patents under this class:

Patent Number Title Of Patent Date Issued
7610991 Speaker and method of outputting acoustic sound Nov. 3, 2009
7275621 Skew horn for a loudspeaker Oct. 2, 2007
6712177 Cross-fired multiple horn loudspeaker system Mar. 30, 2004
6059069 Loudspeaker waveguide design May. 9, 2000
5020630 Loudspeaker and horn therefor Jun. 4, 1991
5004067 Cinema sound system for unperforated screens Apr. 2, 1991
4982436 Dual horn folded soundpath loudspeaker Jan. 1, 1991
4580655 Defined coverage loudspeaker horn Apr. 8, 1986
4496021 360 Degree radial reflex orthospectral horn for high-frequency loudspeakers Jan. 29, 1985
4348549 Loudspeaker system Sep. 7, 1982
4348750 Energy control device Sep. 7, 1982
4310065 Radial horn Jan. 12, 1982
4171734 Exponential horn speaker Oct. 23, 1979
4134471 Narrow angle cylindrical wave full range loudspeaker system Jan. 16, 1979
4104610 Ultrasonic wave horn Aug. 1, 1978
3972385 Horn speaker Aug. 3, 1976
3935925 Horn unit for a speaker Feb. 3, 1976
3930561 Low distortion pyramidal dispersion speaker Jan. 6, 1976

  Recently Added Patents
Information processing apparatus, information processing method, and program
Manufacturing method power semiconductor device
Simulating non power of two texture behavior
Reflective mask blank and method of manufacturing a reflective mask
Method and system of extending battery life of a wireless microphone unit
Telephone relaying apparatus, telephone relaying method, and program
Wristband with detachable labels
  Randomly Featured Patents
Apparatus for recording plural holographic images into a holographic recording material by temporal interleaving
Substituted piperidines
Electrostatic bonding of optical fibers to substrates
Karaoke apparatus detecting register of live vocal to tune harmony vocal
Allyl ester oligomer composition and organic glass for optical material comprising same
Method for manufacturing a semiconductor device
Photometer tube for microscopes
Method of manufacturing coil assembly of stator of electric rotating machine
Display screen with video search graphical interface
Asymmetrical sleeve for fiber optical collimators and method therefor