Radio transmitter and receiver device having a headset with speaker and microphone
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 31, 1987
Grant Date -
N/A
app pub date -
Nov 29, 1983
filing date -
Oct 18, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A radio transmitter and receiver device in which a head band has a transmitting microphone at one end and a receiving speaker at the other end. This microphone comprises a bone transmission type microphone for detecting aural oscillation of an external auditory canal transmitted through a bone tissue of a head portion from a mouth, said microphone being brought into contact with a side head portion at the rear of an ear. Thus, one ear is blocked by the speaker but the other ear is open, and therefore, a user can catch noises thereabout. A transmitting and receiving antenna has matching means and is mounted on the side of the speaker.
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Family
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