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Class Information
Number: 181/153
Name: Acoustics > Diaphragm and enclosure > Rounded enclosure (e.g., curved, etc.)
Description: Subject matter wherein the means to enclose the diaphragm has at least one surface that is circular or curved.










Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8627919 Speaker and portable information terminal Jan. 14, 2014
8477967 Acoustic reflector and energy storage for media assemblies Jul. 2, 2013
8422713 Spherically housed loudspeaker system Apr. 16, 2013
8259980 Pivotal speaker tweeter Sep. 4, 2012
8240426 Three dimensional acoustic passive radiating Aug. 14, 2012
8144900 Speaker system Mar. 27, 2012
8098852 Acoustic reflector and energy storage for media assemblies Jan. 17, 2012
8094860 Portable sound box assembly Jan. 10, 2012
8068618 Spherical loudspeaker for omnipresent sound reproduction Nov. 29, 2011
7997381 Speaker assembly Aug. 16, 2011
7970149 Audio speaker with partially spherical speaker housing and escutcheon Jun. 28, 2011
7878296 Speaker embodying a stereo sound Feb. 1, 2011
7806227 High-performance full-range speaker assembly Oct. 5, 2010
7766122 Acoustic energy projection system Aug. 3, 2010
7743878 Folded horn enclosure with unitary pathway Jun. 29, 2010
7654362 Speaker and method of outputting acoustic sound Feb. 2, 2010
7621369 Acoustic energy projection system Nov. 24, 2009
7610991 Speaker and method of outputting acoustic sound Nov. 3, 2009
7604091 Asymmetric and continuously curved speaker driver enclosure to optimize audio fidelity Oct. 20, 2009
7575095 Speaker Aug. 18, 2009
7441630 Multi-driver speaker system Oct. 28, 2008
7416048 Portable terminal apparatus Aug. 26, 2008
7325649 Loudspeaker with progressively damped acoustical chamber Feb. 5, 2008
7178628 Speaker assembly Feb. 20, 2007
7167415 Transducers for focusing sonic energy in transmitting and receiving device Jan. 23, 2007
7088838 Speakerphone accessory assembly Aug. 8, 2006
7051835 Bass-reflex loudspeaker system and method of manufacturing the same May. 30, 2006
7006648 Speaker cabinet with increased air circulation efficiency Feb. 28, 2006
6973994 Apparatus for increasing the quality of sound from an acoustic source Dec. 13, 2005
6891957 Versatile speaker base May. 10, 2005
6859543 Speaker system and method for making the same Feb. 22, 2005
6837333 Loudspeaker system with forced air circulation and control circuit therefor Jan. 4, 2005
6782113 Sound device mounting assembly Aug. 24, 2004
6766027 Elliptical flushmount speaker Jul. 20, 2004
6719091 Coaxial speaker system Apr. 13, 2004
6705426 Acoustic diffuser and method of production Mar. 16, 2004
6707922 Deformable loudspeaker Mar. 16, 2004
6691832 Speaker Feb. 17, 2004
6675930 Speaker holder Jan. 13, 2004
6636610 Loudspeaker systems Oct. 21, 2003
6628792 Back to back mounted compound woofer with compression/bandpass loading Sep. 30, 2003
6628797 Loudspeaker-and-pre-stressed cabinet Sep. 30, 2003
6598700 Compression molded cellulose (CMC) loudspeaker cabinets and method for making same Jul. 29, 2003
6580801 Loudspeaker apparatus Jun. 17, 2003
6568502 Sounder, speaker and sound head using the sounder May. 27, 2003
6520280 System and method for workspace sound regulation Feb. 18, 2003
6513624 Loudspeaker enclosure Feb. 4, 2003
6484843 Speaker apparatus equipped with means for producing complicated waveform of low frequency with higher improved fidelity Nov. 26, 2002
6431308 High fidelity small omnidirectional loudspeaker Aug. 13, 2002
6411721 Audio speaker with harmonic enclosure Jun. 25, 2002

1 2 3 4










 
 
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