Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Plural or compound reproducers
Reexamination Certificate
2000-06-07
2004-05-04
Kuntz, Curtis (Department: 2643)
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Plural or compound reproducers
C181S130000
Reexamination Certificate
active
06731772
ABSTRACT:
TECHNICAL FIELD
The present invention relates, in general, to a cushion cover for earphones of various portable small-sized recorders, radios, etc. designed to allow such earphones to better fit more comfortably in the ear without pain.
BACKGROUND ART
When earphones are inserted in the ear, generally the circumference of the insertion portion of the earphones contacts the concha of the ear for holding the earphone in the ear. Long-time use of earphones sometimes has caused problems of pain or discomfort due to continuous added pressure and friction of the insertion portion with the ear. Also, the earphone may fail to block external noise due to a poor fit. Further, repetitive long-time uses of earphones have caused diseases including skin disease, tympanitis, etc., and have led to hearing defects. There have been other disadvantages arising from long-time wearing of earphones.
In order to relieve the above-mentioned pain the circumference of the insertion portion of earphones has been covered with a cushion cover made of foam sponge or rubber material. However, such conventional covers have been inferior due to inherent characteristics and deformation of the materials from which the covers have been made.
DISCLOSURE OF INVENTION
It is therefore an object of the present invention to resolve problems of conventional cushion covers of earphones by providing a ring-shaped cover that surrounds the circumference of the insertion portion of an earphone, is made of a soft resin and is provided with air chambers to double the cushion effect of the cover.
REFERENCES:
patent: 3030458 (1962-04-01), Gongoll
patent: 4133984 (1979-01-01), Akiyama
patent: 4403120 (1983-09-01), Yoshimi
patent: 4443668 (1984-04-01), Warren
patent: 4668842 (1987-05-01), Yokoyama et al.
patent: 4965838 (1990-10-01), Kamon et al.
patent: 5048092 (1991-09-01), Yamagishi et al.
patent: 5654530 (1997-08-01), Sauer et al.
Ensey Brian
Renner , Otto, Boisselle & Sklar, LLP
Splendor Co., Ltd.
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