| 摘要 |
PURPOSE: A ratchet handle is provided to enable a user to easily lock and loosen bolts and nuts when a handle is rotated in the direction of the arrow. CONSTITUTION: The ratchet handle is rotated counterclockwise in locking to increase the size thereof and fit in the size of the bolt, and then is rotated clockwise to be locked. The ratchet handle is turned in the opposite direction to be unlocked. The ratchet handle performs ratchet function for bolts and nuts having different dimensions. |
