Diaphragm for loudspeakers

Details Diaphragm for loudspeakers Diaphragm for loudspeakers

1982-12-22

1984-09-11

Lilling, Herbert J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524401, 524434, 524497, 524579, 524584, C08K 310, C08K 322, C08L 2312

Patent

active

044710844

ABSTRACT:
A diaphragm for a loudspeaker is described, which essentially consists of a polyolefin resin such as propylene homopolymer or copolymer with an ethylenically unsaturated copolymerizable monomer or a 4-methylheptene-1 resin and short fibers of potassium titanate. The titanate fibers have an average fiber length of 10 to 30 microns and an average diameter of 0.1 to 0.5 micron.

REFERENCES:
patent: 3895157 (1975-07-01), Brixner et al.
patent: 4111866 (1978-09-01), Torikai et al.
patent: 4190746 (1980-02-01), Harwood et al.
Derwent Abstract 28113 A/15 (3-1978) J53023871 Nippon Asbestos.
Derwent Abstract 49204 E/24 (5-1982) J57074342 Bridgestone.
Derwent Abstract 43134 A/24 (5-1978) J53050249 Hitachi.
Derwent Abstract 13490 C/08 (1-1980) J55003240 Toa Tokushu.
Derwent Abstract 49992 B/27 (5-1979) J54066119 Matsushita.
Derwent Abstract 85894 D/47 (10-81) J56127643 Showa.
Derwent Abstract 34064 B/18 (3-1979) J54037719 Mitsubishi.
Derwent Abstract 03149 K/02 (11-1982) J57192441 Otsuka.

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