| 摘要 |
616403 The present disclosure relates to a device to assist the opening of a covering element pivotably mounted relative to an edge of a frame. According to the disclosure, the assistance cylinder (6) includes a hollow shaft (7), a guide pin (10) inserted in the hollow shaft (7) and comprising at the end thereof opposite the end wall (8) of the hollow shaft (7) a yoke, a spring (13) inserted in the hollow shaft (7) surrounding the guide pin (10) and mounted pre-stressed when unloaded between the end wall of the hollow shaft (7) and the yoke (11) of the guide pin (10), and a means secured to the end of the guide pin (10) and engaging with the end wall (8) of the hollow shaft (7) for keeping the spring (13) retained in the released state thereof. The disclosure is stated to be useful in the field of road systems. |
