Earphone

Details Earphone Earphone

2008-05-11

2011-11-15

Potter, Roy (Department: 2822)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Mounting or support feature of housed loudspeaker

C455S351000

Reexamination Certificate

active

08059854

ABSTRACT:
An earphone includes a housing, a reel mechanism, a speaker, and a transmission wire. The reel mechanism is pivotally disposed in the housing and has an accommodating space defined therein for accommodating the speaker. The transmission wire is wound on the reel mechanism. When the transmission wire is pulled or released and thereby drives the reel mechanism to rotate, the speaker rotates coaxially together with the reel mechanism.

REFERENCES:
patent: 3798389 (1974-03-01), Tokizaki
patent: 5339461 (1994-08-01), Luplow
patent: 5832098 (1998-11-01), Chen
patent: 6434249 (2002-08-01), Wei
patent: 6480611 (2002-11-01), Hashimoto et al.

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