William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
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| Number | Title | Issue Date |
| 8180091 | Headphone A headphone that is especially useful to test the efficacy of an earplug installed in an ear canal, by using the headphone to produce sound and by sensing sound pressure at the ear drum despite the presence of the earplug. Applicant uses the speaker (42) in t... | 05/15/2012 |
| 8180092 | Converter system for an active noise compensation apparatus There is provided a transducer system for an active noise compensation apparatus, which has a first end at the ear side and an electroacoustic transducer. The electroacoustic transducer has a diaphragm system and a magnet system, wherein the central region of the di... | 05/15/2012 |
| 8150090 | Headphone and ear pad The present invention provides a headphone with a more comfortable and stable feeling to the user when being worn by the user. The headphone includes a headphone section that has a sound-sending section of a speaker unit arranged at the front surface side thereof, a... | 04/03/2012 |
| 8107663 | Headset A headset has a hollow housing having a front wall with at least one sound hole formed thereon, and a rear wall facing the front wall having a plurality of air holes formed thereon. A loudspeaker unit is disposed in the housing and adjacent to the sound hole. An adj... | 01/31/2012 |
| 8098872 | Headphone In a headphone having a headband and two speaker units respectively pivotally mounted on the two distal ends of the headband, each speaker unit includes a speaker eccentrically positioned therein, an ear cushion covered on the front side of the speaker and having an... | 01/17/2012 |
| 8041067 | Earphone structure with a composite sound field An earphone structure including one or more composite chambers is described. Each of the composite chambers includes sub-speakers. The sounds generated by these sub-speakers are uniformly distributed in the composite chamber and a composite sound field is generated ... | 10/18/2011 |
| 8000490 | Earphone structure with a composite sound field An earphone structure including one or more composite chambers is described. Each of the composite chambers includes sub-speakers. The sounds generated by these sub-speakers are uniformly distributed in the composite chamber and a composite sound field is generated ... | 08/16/2011 |
| 7983438 | Headphone device A headphone unit including a back housing provided at the rear of a driver unit and a baffle portion provided at the front thereof. In the headphone apparatus, the baffle portion, which is formed to surround a space except a front opening portion of a driver unit, a... | 07/19/2011 |
| 7978870 | Attachment apparatus A headset apparatus having a headwear member (9) e.g. an ear shell, possessing a surface formation to which a separate attachment device (1) is reciprocally shaped to attach by a push-fit (e.g. by sliding, slotting or clipping) into engagement with the... | 07/12/2011 |
| 7970159 | Headphoning A noise reducing headset has one or more of the following features: (a) pair of earcups each seated in a yoke assembly mechanically coupled by a headband enclosing a flat spring formed with a slot that runs the length of the spring accommodating electrical wires ele... | 06/28/2011 |
| 7869615 | Sound-box type earphone housing, headset with sound-box type earphone housings A sound box type earphone housing for use in a headset is disclosed to include a body shell having a coupling flange, a springy earphone clamp fastened to the inside of the body shell and having a front clamping hole for securing an earplug type earphone, and an ann... | 01/11/2011 |
| 7817814 | Multiple channel earphone The present invention relates to a multiple channel earphone of small volume. In the earphone structure, a chamber tube with an adjusting hole or a set of adjusting holes is provided. The sound pressure of the chamber tube is naturally released without affected the ... | 10/19/2010 |
| 7519196 | Headset A headset with a headband is equipped with at least one cup in which a male or female plug is arranged. The cup is intended for the mounting of a speaker or a speaker with microphone arm, said speaker or speaker with microphone arm being also provided with a male or... | 04/14/2009 |
| 7436973 | Structure for earphones with multiple sound tracks A structure for earphones with multiple sound tracks, includes an earphone casing, at least one first speaker, a second speaker and an adjusting member. The earphone casing has a plurality of outer-sound holes on the outside portion thereof. The speakers are dispose... | 10/14/2008 |
| 7426282 | Head set speaker and stereo playing device A head set speaker and stereo radio playing device exhibits improved harmonics and acoustic fidelity. A resilient and flexible headpiece is sized to fit behind the head of the user. Right and left device enclosures are carried by the ends of the headpiece, and are a... | 09/16/2008 |
| 7418103 | System and method for controlling states of a device A system and method for automatically changing a state of a device coupled to a headphone device is provided. The system comprises a means for detecting if at least one earpiece of the headphone device is activated or deactivated. Based on an activation state or a c... | 08/26/2008 |
| 7391878 | Earphone device having composite functions An earphone device having composite functions at least has an earphone shell body, a loudspeaker, and an adjustment component. Several outer sound holes are disposed on the outer side of the earphone shell body. The loudspeaker is fixed in the earphone shell body. T... | 06/24/2008 |
| 7388960 | Multimedia speaker headphone A multimedia speaker headphone has a headband, two ear-covers and a control and transmission device. The ear-covers are mounted pivotally on the headband and each ear-cover has an earphone speaker and an audio speaker. The control and transmission device has a contr... | 06/17/2008 |
| 7372974 | Headphone with cord winder devices The present invention provides a headphone with cord winder devices that are capable of winding up a bridging cord between one (left) headphone assembly and the other (right) headphone assembly. The headphone comprises one (left) headphone assembly accommodating, in... | 05/13/2008 |
| 7362876 | Interference-free transmitting receiving earset A interference-free transmitting receiving earset includes a housing houses a speaker, a grille covering the speaker and having a front center tube, and two microphones mounted in the center tube of the grille in reversed directions to pick up sound waves from the u... | 04/22/2008 |
| 7356155 | Device and method for assisting vocalists in hearing their vocal sounds The present invention, in one embodiment, includes a reverb device and method for assisting vocalists in hearing their vocal sounds. The reverb device includes a vocal sound receiver, a sound director coupled to the vocal sound receiver and an ear sound deliverer co... | 04/08/2008 |
| 7340071 | Headphones with a multichannel guiding mechanism Headphones with a multichannel guiding mechanism having different channel speakers positioned within each of earphones and separate sound-guiding chambers for receiving the different channel speakers. In taking the acoustics into account, the separate sound chambers... | 03/04/2008 |
| 7317809 | Arrangement in acoustic headsets The disclosure relates to an arrangement in hearing protection, in the form of an acoustic headset, comprising a first auditory cup (10), a second auditory cup (11) and a stirrup or headband (12) interconnecting the auditory cups (10, 11)... | 01/08/2008 |
| 7317802 | Active-noise-reduction headsets with front-cavity venting Active-noise-reduction (ANR) headsets protect the hearing of their users from loud persistent noises, such as airplane engines and construction equipment. These headsets generally include ear speakers and special circuitry to cancel or suppress certain types of loud... | 01/08/2008 |
| 7305098 | Hearing device A hearing device has an electrical/acoustical output converter that communicates with ambient air through a membrane. The membrane separates two spaces. Each space communicates with ambient air through a passage that substantially blocks acoustical signals in the ra... | 12/04/2007 |
| 7296222 | Method and system for preparing and displaying page structures for web sites In order to browse a web site by using a browser program running on a computer, a web browser obtains, from a server holding information concerning web sites, the page structure and the attributes for the web pages at the site, and displays them in correlation with ... | 11/13/2007 |
| 7292704 | Noise attenuating headset Systems and techniques are disclosed for a headset that may be used in an audio system used in a magnetic field. In one aspect, the system includes an inner set portion adapted to fit into an ear canal. A pneumatic port is disposed in the hole to couple audible soun... | 11/06/2007 |
| 7289633 | System and method for integral transference of acoustical events A sound system for capturing and reproducing sounds produced by a plurality of sound sources. The system comprises a device for receiving sounds produced by the plurality of sound sources and converting the separately received sounds to a plurality of separate audio... | 10/30/2007 |
| 7289641 | Multiple channel earphone A multiple channel earphone is provided with an external tube disposed on the earphone main body. The earphone includes a case, a case extension unit, and a cover. A main sound field is formed in an interior chamber enclosed by the case, the case extension unit and ... | 10/30/2007 |
| 7286860 | Systems and methods for a comfortable wireless communication device An improved wireless communication device, method, and system, that is easy to operate for people of all ages, particularly for senior citizens, that is compact, ergonomic, and comfortable, but which also provides simplicity of operation for those users who do not r... | 10/23/2007 |
| 7280666 | Moveable device component with acoustic porting An acoustic porting arrangement is provided that uses sound pressure signal ports (202, 112) to enhance speaker (406) and microphone cartridge (402) performance when mounting the speaker (406) on a moveable component, such as a flip part ... | 10/09/2007 |
| 7254423 | Latching mechanism and method of operation thereof The invention concerns a latching mechanism (105) for assembly of a housing (110) of an electronic device (100). The latching mechanism includes a latch element (120) and a receiving element (131) contained within the housing. The ... | 08/07/2007 |
| 7251335 | Self contained MP3 player and earphones A headset containing 2 earphones is described. The headset includes an anti-noise circuit, a radio system circuit, and a sound collection circuit for providing an anti-noise capability. One of the earphones defines a cavity having an external input terminal therein.... | 07/31/2007 |
| 7245735 | Earmuff structure for headset or ear protector An earmuff structure for headset or ear protector includes two earmuff shells and two integrally injection molded speaker mounting plates that are screwed to an inner side of the earmuff shells and each has a central hole for receiving a speaker therein. The speaker... | 07/17/2007 |
| 7245736 | Headphone device A headphone device includes an earpad worn outside of the ear on the head of a user and a housing provided with a speaker unit as well as a fitting portion on which the earpad is fit. The earpad includes a cushion and a facing that covers the cushion. The earpad can... | 07/17/2007 |
| 7221769 | Hearing aid adapted for discrete operation The present invention relates to a hearing aid, which allows a hearing aid user to discretely operate his/her hearing aid by applying a force to a portion of the ear carrying the hearing aid. A number of different functions of the hearing aid, such as turning a batt... | 05/22/2007 |
| 7215782 | Apparatus and method for producing virtual acoustic sound In one embodiment, a sound image is generated by applying first and second copies of a first input audio signal to first and second audio channels, respectively, to generate first and second output audio signals for the sound image. Each output audio signal is gener... | 05/08/2007 |
| 7184565 | Headphone In order to provide headphones with a cord-winding mechanism capable of favorably retracting and winding a cord, a cord-winding mechanism is incorporated in either or both of the casings of housings 1L and 1R constituting headphones; and a lock is released by joinin... | 02/27/2007 |
| 7172052 | Headphone A headphone has a headband and two earpieces each connected to the headband so as to be pivotable about at least two pivot axes. The two pivot axes intersect one another at a point of intersection that is positioned on or near a central axis of the earpiece, respect... | 02/06/2007 |
| 7162051 | Headphone The invention relates to headphones. Such headphones always comprise at least one, preferably two, earpieces which are each equipped with a reproduction transducer. Furthermore, appropriate earpieces also comprise an ear cushion, which either encloses the user's ear... | 01/09/2007 |