| 摘要 |
A braking device for a fluid power actuator, which braking device automatically brakes the movement of a piston rod in response to a failure in the supply of pressurized fluid to the fluid power actuator. Ball elements are urged radially inwardly between a pair of converging surfaces to cause a drive ring member having a ramp surface thereon to move into engagement with a brake ring to effect a contracting thereof into engagement with the piston rod. |
