| 摘要 |
To ensure adequate exercise of the seal of the intermediate piston means of a dual chamber hydraulic slave cylinder, the piston means is constructed as two separate piston members, axially movable relative to each other and normally urged apart by spring means, which may, e.g. be a belleville type or a coil compression spring. Interengaging spigot and socket means on the piston members may be provided to guide the two members and stabilize them against tipping movement.
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