Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1993-10-21
1995-10-17
Lesmes, George F.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
428285, 428299, 428298, 428903, 428902, 428286, 428288, 428296, 4283105, 4283111, 4283115, 4283142, 4283179, B32B 700, B32B 522, D03D 900
Patent
active
054589584
ABSTRACT:
A speaker cone comprising a sheet (A) comprised of acrylic synthetic fibers, or a laminate of a sheet (A) and a sheet (B) comprised of the other fibers, in the shape of a cone, wherein the sheet (A) being comprised of acrylic synthetic fibers having a large number of long and narrow voids extending internally along the longitudinal direction, the voids have a nonspecific lateral cross-sectional shapes, the majority of the fibers present at the surface of the sheet (A) is divided into fine fibers, a large amount of undivided acrylic synthetic fibers are present in the inside of the sheet (A), and these fibers are made integral through mutual entanglement, and at least one of the surfaces of the cone shaped article has fused portions of the fibers.
REFERENCES:
Arakawa, Diaphragm for Speaker, Patent Abstracts of Japan, Abstract vol. 007045, Feb. 23, 1983.
Kanzaki et al., Acrylic Nonwoven Fabric and Production Thereof, Patent Abstracts of Japan, Abstract vol. 014485, Oct. 23, 1990.
Kawada et al., Diaphragm for Speaker, Patent Abstracts of Japan, Abstract vol. 010275, Sep. 18, 1986.
Inoue, Laminated Material for Vibrating Parts and Vibrating Parts of Speaker, Patent Abstracts of Japan, Abstract vol. 015199, May 22, 1991 Feb. 2, 1994 European Search Report for EP 93 30 8391 and Annex thereto.
Kanamori Naoki
Kanzaki Hidetoshi
Saiga Noboru
Asahi Kasei Kogyo Kabushiki Kaisha
Lesmes George F.
Shelborne Kathryen E.
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