| 摘要 |
An actuator ( 100 ) for actuating an onboard device ( 200 ) on a sailboat ( 300 ), comprises: a piston ( 2 ) slidably mounted within a cylinder ( 1 ) and movable between a first operating position, in which the piston is at a first end portion ( 3 a) of the cylinder ( 1 ), and a second operating position, in which the piston is at a second end portion ( 3 b) of the cylinder ( 1 ); hydraulic means ( 101, 15 ) for supplying a pressurised working fluid at the first end portion ( 3 a) of the cylinder ( 1 ), this fluid being adapted to cause the piston ( 2 ) to move from the first operating position to the second operating position; pneumatic means for supplying ( 102, 11 ) a pressurised gas at the second end portion ( 3 b) of the cylinder, this gas being adapted to cause the piston ( 2 ) to move from the second operating position to the first operating position.
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