| 摘要 |
Centrifugal weight members are accommodated within a housing arranged concentrically with a driven rotary member and rotatable in unison therewith, and engage a driving rotary member through double eccentric cam means. The centrifugal weight members define a radially inner chamber in cooperation with the driven rotary member, and radially outer chambers in cooperation with the housing, and are formed with passages communicating the above chambers with each other.
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