Earphone

Details Earphone Earphone

2005-03-21

2009-06-23

Kuntz, Curtis (Department: 2614)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Plural or compound reproducers

C381S328000, C439S459000, C439S456000

Reexamination Certificate

active

07551748

ABSTRACT:
The receiver unit includes a receiver body, a housing containing this receiver body, a cord connected to the receiver body, and a cord protector for protecting the cord. The cord protector is a plate-like member having a substantially rectangular shape, and includes an engaging portion and a semicircular portion. The cord protector is formed of soft material such as urethane rubber having Shore hardness of about A90, and its wall thickness is set to be 0.3 to 0.6 mm (0.5 mm, for example).

REFERENCES:
patent: 2545731 (1951-03-01), French
patent: 4443668 (1984-04-01), Warren
patent: 5145402 (1992-09-01), Plyler et al.
patent: 5949896 (1999-09-01), Nageno et al.
patent: RE38351 (2003-12-01), Iseberg et al.
patent: 2006/0140434 (2006-06-01), Yang
patent: 61-48661 (1986-04-01), None
patent: 2003-143681 (2003-05-01), None
patent: 2003-143682 (2003-05-01), None

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