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US 5,347,584 AGranted
Hearing aid
AssigneeRion Co., Ltd.
InventorYoshiyuki Narisawa
Life of this patent
Estimating the term…
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.
Claims8
A hearing aid, comprising:
- a case for inserting into an ear hole;
- a panel portion attached to said case for closing an opening thereof;
- a taking-out knob to be turned to project from said panel portion to an outside position for serving as a knob means when a wearer takes out said case from said ear hole;
- a battery holder holding a battery and supported by said panel portion to be able to turn within a battery accommodation window provided with said panel portion;
- a cam means turning together with said taking-out knob and turning said battery holder from a first turning position to a second turning position when said taking-out knob is turned to the position where said taking-out knob projects to said outside position;
- and
- a battery connecting means electrically connected to electrodes of said battery when said battery holder is at the first turning position and disconnected from said electrodes when said battery holder is at the second turning position.
4 more elements
A hearing aid comprising:
- a case for inserting into an ear hole;
- a panel portion attached to said case for closing an opening thereof;
- a taking-out knob to be turned to project from said panel portion to an outside position for serving as a knob means when a wearer takes out said case from said ear hole;
- a battery holder holding a battery and supported by said panel portion to be able to turn within a battery accommodation window provided within said panel portion;
- a cam means turning together with said taking-out knob and turning said battery holder from a first turning position to a second turning position when said taking-out knob is turned to project to said outside position;
- a battery connecting means electrically connected to the electrodes of said battery when said battery holder is at the first turning position and disconnected from said electrodes when said battery holder is at the second turning position;
- a howling prevention fixture accommodated on said case at an extreme end of said case confronting the external auditory meatus of a wearer to allow a connecting portion projectingly formed at the extreme end of said case to pass therethrough;
- and
- a fixing chip for internally securing said howling prevention fixture to said case by being slidably engaged with the extreme end of said connection portion.
6 more elements
Dependencies are inferred from the claim text.