Patent ID: 8403423

Claim:
A method of limiting a load applied on a seat belt in an emergency, comprising: obtaining information comprising collision-predicting information and collision severity information based on an emergency situation; as soon as the information is received, initially judging if the emergency situation is in a first situation wherein a predetermined condition for controlling one seat belt load limiting mechanism is not satisfied based on the information, or in a second situation wherein the predetermined condition for controlling the one seat belt load limiting mechanism is satisfied based on the information; in the first situation, actuating a driving member not to operate the one seat belt load limiting mechanism; winding the seat belt to remove a slack of the seat belt with actuating the driving member; and operating another seat belt load limiting mechanism to prevent withdrawing the seat belt; or in the second situation, winding the seat belt to remove the slack of the seat belt without actuating the driving member; and operating the one and another seat belt load limiting mechanisms to prevent withdrawing the seat belt.