EARPHONE Russian patent published in 2005 - IPC

Abstract RU 2252495 C2

FIELD: earphones.

SUBSTANCE: proposed earphone has case accommodating sound box with loudspeaker installed inside the latter and provided with plurality of sound exit cells on front end of earphone case. Plurality of sound exit cells are disposed on earphone case over its perimeter within adequate distance.

EFFECT: eliminated pulse noise impact onto middle ear causing injury to the latter and conductive hearing loss.

1 cl, 6 dwg

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RU 2 252 495 C2

Authors

Lin Chang-Ju

Dates

2005-05-20Published

2000-07-03Filed