| 摘要 |
A plunger member slidably retained along an axial line in a central bore of a hub member by guiding surfaces for controlling the flow of an operational fluid. In response to an operator supplied input, the plunger member moves on the guiding surfaces in the central bore. An annular stop on the plunger member limits the movement of the plunger member in one direction by engaging a portion of the housing of the hub member. A resilient member positively retained in the plunger member adjacent the annular stop provides a cushioning surface in which noise between the plunger member and the hub member is absorbed.
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