1978-08-31
1980-11-11
Phillips, Charles E.
Undertaking
G11B 318
Patent
active
042328691
ABSTRACT:
A pickup cartridge for phonographic records, in which the damper material supporting an end portion of a cantilever is made of an elastomer comprising a blend polymer of a silicone rubber polymer and polyisobutylene. This damper material is advantageous for its high dampability and small temperature dependence of the dampability.
REFERENCES:
patent: 3881073 (1975-04-01), Grado
Morimoto Kazuhisa
Wakabayashi Takashi
Matsushita Electric - Industrial Co., Ltd.
Phillips Charles E.
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