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Class Information
Number: 181/128
Name: Acoustics > Anatomic or prosthetic relation > Ear and mouth
Description: Subject matter having an earpiece and mouthpiece operatively connected together.

Sub-classes under this class:

Class Number Class Name Patents
181/130 Auditory canal insert 247
181/136 Deflector type 29
181/129 Ear 263
181/137 Receiver 81

Patents under this class:

Patent Number Title Of Patent Date Issued
8616213 Earplug insertion device Dec. 31, 2013
8538059 Ear speaker device Sep. 17, 2013
8230965 Hearing assistance device Jul. 31, 2012
8201561 Ear tip Jun. 19, 2012
8177705 Methods and apparatus for transmitting vibrations May. 15, 2012
7864972 Customized in-ear interface for acoustic equipment and method Jan. 4, 2011
7854698 Methods and apparatus for transmitting vibrations Dec. 21, 2010
7740104 Multiple resonator attenuating earplug Jun. 22, 2010
7681577 Ear tip Mar. 23, 2010
7682303 Methods and apparatus for transmitting vibrations Mar. 23, 2010
7401679 Adaptor for mounting a sound tube in an earpiece Jul. 22, 2008
6820717 Pressure regulating earplug Nov. 23, 2004
6817440 Multi-channel headphones Nov. 16, 2004
6775390 Headset with movable earphones Aug. 10, 2004
6769508 Underwater audio system Aug. 3, 2004
6721433 Acoustic apparatus wearable on the head Apr. 13, 2004
6707924 Holder for portable electronic equipment Mar. 16, 2004
6684976 Headset ear seal Feb. 3, 2004
6622816 Personal protective devices having an energy activated material Sep. 23, 2003
6434251 Headset with adjustable earhook Aug. 13, 2002
6408981 Extruded monolithic foam earplug Jun. 25, 2002
6252970 Headphone Jun. 26, 2001
6229901 Auditory feedback device May. 8, 2001
6138790 Band earplug adapted to prevent soiling Oct. 31, 2000
6105714 Hearing protection device Aug. 22, 2000
6035961 Earphone with a soft, compressible housing and adjustable earpiece loop Mar. 14, 2000
5185807 Headset with multi-position stirrup assemblies Feb. 9, 1993
5142587 Intra-concha type electroacoustic transducer for use with audio devices etc. Aug. 25, 1992
5105904 Cerumen trap for hearing aids Apr. 21, 1992
4473130 Crash helmet with communication system Sep. 25, 1984

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