| 摘要 |
A device for retracting a separable component of an object on separation of the object from a launcher, the device comprising a housing attached to the launcher, a power spring in the housing for the component on separation of the object from the launcher, a shaft connected to one end of the power spring for winding the power spring during loading of the object on the launcher, a lock for automatically fixing the power spring in a predetermined wound position, an annular flange structure connected to the shaft for automatically preventing over winding of the power spring, and a cam device responsive to separation of the object from the launcher for releasing the lock.
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