Wireless earplug with improved sensitivity and form factor
First Claim
Patent Images
1. A wireless communications earplug for use with a magnetic field transmitter, comprising:
- a) a receiver comprising a coil of wire wound upon a bobbin of magnetic material; and
b) a speaker having a case, an acoustic output, and an electrical input, the case being at least partially made of magnetic material, the electrical input being coupled to the wire of the receiver,wherein the bobbin of the receiver is mounted in sufficiently close proximity to the case of the speaker and oriented such that flux lines passing through the speaker also pass through the coil of the receiver.
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Abstract
An improved wireless communications earplug for use with a magnetic field transmitter. The wireless earplug has a receiver made of a coil of wire on a magnetic bobbin, mounted in close proximity or in contact with a magnetic case of a speaker. The magnetic case of the speaker serves to increase the magnetic flux through the receiver and improves the efficiency of the earplug. The speaker is acoustically coupled to an eartip, and the earplug may be molded into a custom earplug body.
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Citations
22 Claims
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1. A wireless communications earplug for use with a magnetic field transmitter, comprising:
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a) a receiver comprising a coil of wire wound upon a bobbin of magnetic material; and b) a speaker having a case, an acoustic output, and an electrical input, the case being at least partially made of magnetic material, the electrical input being coupled to the wire of the receiver, wherein the bobbin of the receiver is mounted in sufficiently close proximity to the case of the speaker and oriented such that flux lines passing through the speaker also pass through the coil of the receiver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A wireless communications earplug, comprising:
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a) a receiver comprising a coil of wire wound upon a bobbin having an axis; b) a speaker having an acoustic output and an electrical input connected to the coil of wire of the receiver; and c) an eartip for insertion into an ear canal of a human ear, the eartip being acoustically coupled to the acoustic output of the speaker, wherein the receiver is configured to be located at least partially in a concha of the human ear, and wherein the axis of the bobbin is oriented parallel to an axis of a portion of the ear canal. - View Dependent Claims (11, 12, 13, 14)
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15. A communications system comprising:
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a) a magnetic field transmitter for transmitting in the audio frequency spectrum; b) a receiver comprising a coil of wire wound upon a bobbin; c) a speaker having a case, an acoustic output and an electrical input coupled to the wire of the receiver; and d) an eartip for insertion into an ear canal of a human ear, the eartip being acoustically coupled to the acoustic output of the speaker, wherein the receiver is located at least partially in a concha of the human ear, and the speaker is connected to the receiver through passive electrical components. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
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Specification