Hearing aid
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 13, 1994
Grant Date -
N/A
app pub date -
Mar 6, 1992
filing date -
May 31, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A hearing aid is used to be inserted into and removed from an ear hole. A cam attached to a taking-out knob pushes up a battery holder by lifting up the taking-out knob when the hearing aid is taken out from an ear hole, whereby the electrode of the battery in the battery holder is left from the battery connecting tongues attached to a panel portion to thereby turn OFF a power supply. A howling prevention fixture is fixed to a hearing aid case at the head portion thereof to prevent howling.
First Claim
Family
International Classification(s)
Cited Art Landscape
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