Patent attributes
A dual-driving one-way rotational device includes: a body part; a clutch bearing part configured to guide the rotation of the body part in one direction; a knob part configured to be rotated in one direction in the state of being connected to an object to be rotated or to prevent the body part from being rotated together when the object to be rotated and the clutch bearing part are rotated in the same direction; a manual rotation lever installed on the body part; and a power transmission shaft coupled to the knob part, and configured to transfer the power of a power source. The knob part includes a rotation portion and a head portion. A spiral is formed on the inner circumferences of the rotation portion and the head portion. The power transmission shaft has the outer circumference on which a spiral is formed.
