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1. (WO2001003470) EARPHONE WITHOUT IMPULSE NOISE AND SURROUNDINGS BLOCKADE

Pub. No.:    WO/2001/003470    International Application No.:    PCT/US2000/018397
Publication Date: Fri Jan 12 00:59:59 CET 2001 International Filing Date: Tue Jul 04 01:59:59 CEST 2000
IPC: H04R 1/10
Applicants: LIN, Chung-Yu
ELLIOTT, Clyde, Bruce
Inventors: LIN, Chung-Yu
Title: EARPHONE WITHOUT IMPULSE NOISE AND SURROUNDINGS BLOCKADE
Abstract:
The present invention is to provide an earphone without impulse noise and surroundings blockade consists of an earphone housing having a sound chamber (41) inside thereof and a loudspeaker (50) mounted therein, wherein a plurality of sound outlet meshes (42) is mounted in the front end of the earphone housing, and a proper distance is given between the front end of the earphone housing and the loudspeaker mounted therein, wherein a plurality of sound inlet meshes (43) is mounted on and encircling the earphone housing within the proper distance; and the lower impulse noise output end according to two output ends of the loudspeaker is faced to the sound outlet meshes; via the design. The present invention can prevent not only the impulse noise direclty impact to the middle ear but also the damage of the middle ear and the cause of conductive hearing loss.