Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Electromagnetic
Reexamination Certificate
2011-01-04
2011-01-04
Kuntz, Curtis (Department: 2614)
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Electromagnetic
C381S396000, C381S400000, C381S401000, C381S423000, C381S431000
Reexamination Certificate
active
07864977
ABSTRACT:
According to the invention, a whole-surface driven, flat thin loudspeaker that brings about smooth frequency characteristics with split vibration hardly caused is realized, and a voice coil assembly that has high reproduction efficiency and fewer operation failures, and brings about favorable work efficiency in manufacturing and further reduced manufacturing cost, and a loudspeaker using the same are manufactured. The voice coil assembly includes a rectangular voice coil including a rectangular bobbin formed with a rectangular cross section and a rectangular coil bonded to the rectangular bobbin, and a rectangular reinforcing member coupling the plurality of rectangular voice coils to one another in a grid pattern, wherein a portion of inner wall surfaces of the rectangular reinforcing member is bonded to any of outer wall surfaces of the rectangular bobbins of the plurality of rectangular voice coils, and the outer wall surfaces of the rectangular bobbins, to which the inner wall surfaces of the rectangular reinforcing member are not bonded, and portions of the inner wall surfaces of the rectangular reinforcing member, which are not bonded to the outer wall surfaces of the rectangular bobbins define a rectangular space between a pair of the adjacent rectangular voice coils.
REFERENCES:
patent: 5664024 (1997-09-01), Furuta et al.
patent: 55-88590 (1980-06-01), None
patent: 57-099898 (1982-06-01), None
patent: 63-299500 (1988-12-01), None
patent: 07-131890 (1995-05-01), None
Kumo Hiroyasu
Sadaie Koichi
Toyoshima Yoshihide
Eason Matthew
Kuntz Curtis
Onkyo Corporation
Renner , Otto, Boisselle & Sklar, LLP
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