Diaphragm for loudspeaker

Details Diaphragm for loudspeaker Diaphragm for loudspeaker

1982-09-30

1984-12-11

Lesmes, George F.

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...

524449, 524451, 524456, 524604, 524605, C08G 5104

Patent

active

044878770

ABSTRACT:
A speaker diaphragm comprises a composite film prepared by combining a reinforcing material such as a mica, a needle or fiber filler, or talc, with a polybisphenol phthalate resin consisting of an aromatic dicarboxylic acid and a dihydric phenol.

REFERENCES:
patent: 3026222 (1962-03-01), Rogers, Jr. et al.
patent: 3089787 (1963-05-01), Sattler et al.
patent: 3764576 (1973-10-01), Russo
patent: 3859246 (1975-01-01), Jackson, Jr. et al.
patent: 4011193 (1977-03-01), Wambach
patent: 4124561 (1978-11-01), Phipps, Jr. et al.
patent: 4237176 (1980-12-01), Brueggemann et al.

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