| 摘要 |
This invention relates to a fluid operated clutch or brake of a type in which an inflatable annular tube element of elastomeric material actuates or moves a plurality of circumferentially aligned friction shoes radially outwardly or inwardly to effect torque-sustaining clutching or braking engagement. More particularly, the invention relates to clutches and brakes of the above type in which the circumferentially aligned shoes generate heat when in clutching or braking engagement and means to provide a thermal barrier to retard the transfer of heat from the friction shoes to the tube element.
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