| 摘要 |
A rotary fluid pressure actuator includes a housing having an inner actuator chamber with a cylindrical side wall extending between a pair of en d walls. An integral vane rotor assembly, including a shaft and end discs, is positioned in the chamber and is rotationally reciprocated in response to th e direction of flow of fluid to and from chamber segments of the housing. A fixed dam is secured between flanges in an elongated opening along the cylindrical side wall of the housing, the dam extending radially into the chamber from t he opening to abut against the shaft between the end discs. The dam acts as a stop to limit the reciprocal motion of the vane and shaft in each direction</SDOA B>
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