Earphone

Details Earphone Earphone

1991-09-06

1993-06-22

Ng, Jin F.

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Plural or compound reproducers

381183, 381 686, H04R 2500

Patent

active

052221512

ABSTRACT:
An earphone has a case housing an electroacoustic transducer, the case being adapted to be put in the concha of the auricle of an ear. The case is of an elliptical shape so that it can snugly fit in the concha without under pressure imposed on the ear.

REFERENCES:
patent: 4403120 (1983-09-01), Yoshimi
patent: 4736435 (1988-04-01), Yokoyama et al.
patent: 4965838 (1990-10-01), Kamon et al.
patent: 4972492 (1990-11-01), Tanaka et al.

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