| 摘要 |
The device has stabilizer wings (7a-7c) connected to a shaft (15b) extending radially with respect to a longitudinal axis (5a). The shaft traverses an outer movable shell (11) to be rotatably mounted, with the shell and along the axis, around an inner portion (9) of the body (5). The shaft around the portion cooperates with an eccentric that drives each wing in rotation around their corresponding transversal axes (13a-13c). |
