| 摘要 |
<p>A hose coupling member comprises a housing with a through opening and with grooves oriented obliquely along the inner surface of the housing, a piston arranged in the housing to seal said through opening, a shaft attached to the piston, and an actuator arranged inside housing. Upon relative rotation between housing and the actuator shaft will run in grooves and establish a linear relative movement between the housing and the piston, said actuator being arranged and shaped so that it acts directly upon the shaft. Rolls are preferably mounted on the shaft.</p> |
