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| Number | Title | Issue Date |
| 4238647 | Telephone handset having shoulder rest and adjustable earpiece A telephone handset is provided which renders possible holding of the handset without hands during conversation and supported on the left or right shoulder of the telephone user. Depending upon whether the handset is supported on the left or right shoulde... | 12/09/1980 |
| 4229829 | Apparatus for wireless transmission of a teaching program in a classroom Apparatus for wireless transmission of a teaching program in a classroom comprises a transmitting unit comprising a casing which houses one or more tape recorders with operating elements, a microphone and a plurality of infrared transmitters. A removable ... | 10/21/1980 |
| 4206409 | Motor vehicle communication apparatus A motor vehicle communication apparatus utilizes a housing having a pair of removeable helmets disposed therein, each carrying a microphone and receiver combination coupled to a receptacle disposed on the outside surfaces thereof. The housing is provided ... | 06/03/1980 |
| 4179590 | Apparatus for controlling related equipment and for enabling hand free usage An apparatus for use with or integrally formed of a telephone instrument, where the telephone instrument is thus functional to enable concurrent use and non-use of related equipment. The apparatus has a faceset means formed of a transmitter-receiver unit ... | 12/18/1979 |
| 4175217 | Telephone headset A telephone headset including a dialing mechanism for allowing a user to place and receive calls, without being disturbed by loud noises nearby, when the headset is connected to a telephone line. The headset also includes a signaling device for alerting t... | 11/20/1979 |
| 4152553 | Protective helmet with voice communication system An improved protective helmet of the type including a two-way voice controlled communication system having electronic transmitting and receiving circuitry. When incoming signals are received by the voice communication system, a transducer vibrates a rigid... | 05/01/1979 |
| 4139743 | Headset A headset having an ear cup with a beveled spherical socket hole which rotatably supports and seats a spherical boom support swivel. The swivel consists of two half ball elements held in registration on an asymmetrical boom through gripping action of an a... | 02/13/1979 |
| 4138598 | Headset construction The headset comprises a head-encircling band which has a rectangular cross-section, and it includes one or two earpieces which have housings with rectangular slots engaged over and slidable on each band end. In addition, a microphone arm having a micropho... | 02/06/1979 |
| 4132861 | Headset having double-coil earphone A headset for use in a voice communication system which provides a common audio signal, such as a radio receiver signal, to a plurality of such headsets. The headset includes an earphone having a double voice coil and an ambient sound microphone arranged ... | 01/02/1979 |
| 4121061 | Telephone holder A telephone holder which comprises a cradle enclosing a telephone hand set and an arcuate, head-engaging plastic or metal band connected to the cradle by a universal joint.... | 10/17/1978 |
| 4118606 | Acoustical voice transmitting headset A detachable, voice transmit-only headset is all-acoustic and comprises means for mounting the headset on the head of the user and a flexible transmitter tube supported by the mounting means. One end of the tube is adapted for adjustably positioning near ... | 10/03/1978 |
| 4090042 | Acoustical communications headset The detachable communications headset described herein is all acoustic, comprising support means for a transmitter tube and a receiver tube and for supporting the headset on the user's head. The transmitter and receiver tubes are detachably coupled to com... | 05/16/1978 |
| 4088849 | Headphone unit incorporating microphones for binaural recording A headphone having a pair of microphone-loudspeaker units interconnected by a clamping strap for holding the units against the ears of a wearer. The loudspeaker and a microphone of each unit are isolated acoustically from each other by an enclosure. The e... | 05/09/1978 |
| 4087653 | Sound attenuating earcup assembly provided with receivers and contact microphone A head gear assembly including first and second sound attenuating earcups and means for supporting the earcups over the ears of a wearer and in which each of said earcups has an earphone therein, one of said earcups has a contact microphone therein and sw... | 05/02/1978 |
| 4048453 | Telephone handset support device The telephone handset supporting assembly employs a standard telephone headband which goes over the user's head in a fashion as to be secure, yet comfortable. The headband can be molded as a one piece plastic element. On one side of the headband is a simp... | 09/13/1977 |
| 4039765 | Headset with adjustable microphone support A communications headset in which a unidirectional microphone at the end of a support boom is adjustably secured in a position selected by the wearer. The support boom is clamped under adjustable compression in a ball-and-socket arrangement which, at redu... | 08/02/1977 |
| 4020297 | Adjustable headset A light weight operator's headset includes a generally cylindrical housing in which is disposed a receiver transducer, and an arm pivotally joined to one end of the housing. Secured to the arm is a microphone transducer, from which a sound conductive tube... | 04/26/1977 |
| 3993879 | Acoustical communications headset The detachable communications headset described herein is all acoustic, comprising support means for coupling a mouthpiece tube to a transmitter tube and a receiver tube to an ear tube and for supporting the headset on the user's head. All electronic comp... | 11/23/1976 |
| 3984645 | Lightweight headset and retractable cord spool A lightweight headset for communication systems having a cord spool with a retraction mechanism for storing a cord which is electrically connected at one end of the headset and at the other end to a plug. The cord spool, wearable on the person of a user, ... | 10/05/1976 |
| 3971901 | Communications headset with reversible mounting means This headset includes an earphone and/or a microphone. The headset is mounted on a yoke adapted to fit over a wearer's head with pad means at each end of the yoke for engaging the sides of the wearer's head at areas spaced above the ear. One of the pad me... | 07/27/1976 |
| 3971900 | Communications headset with rotatable and tiltable electrical connector This headset includes a single earphone and a boom mounted microphone. The headset is mounted on a yoke adapted to fit over a wearer's head with the transducers on either side of the wearer's head. The earphone transducer is in a housing spaced from the w... | 07/27/1976 |
| 3968435 | Communication system An electronic short range communication system which allows communication between two or more parties who are fairly close to each other and which allows communication between parties having the communication equipment without interfering with those who d... | 07/06/1976 |
