| 摘要 |
<p>The method involves storing energy provided by an energy collector (18) in an energy storage (19), where the energy collector and the energy storage are provided in an energy delivery device. The energy storage provides the stored energy to an actuator (5). The actuator is periodically loaded with the energy stored in the energy storage for performing gradual movement in a direction. A locking mechanism (8) is provided for the actuator, such that movement is prevented in another direction opposite to the former direction.</p> |
