Patent ID: 8413918

Claim:
A paper shredder overload buffering device comprising a motor and a drive cutter shaft driven by the motor, wherein a drive cutter gear, a buffering disc coaxial with and capable of rotating with the drive cutter gear, and a buffering gear which movably surrounding the outer portion of the buffering disc are mounted on the drive cutter shaft; the buffering disc comprises a cylindrical portion, and at least a shifting block is extended from an outer circumferential surface of the cylindrical portion; a receiving hole is defined at the center of the buffering gear by a circumferential inner wall of the buffering gear; a number of recesses are extended diametrically outwardly from the circumferential inner wall; and the number of the recesses is the same as the shifting blocks; the cylindrical portion is movably inserted into the circumferential inner wall, while the shifting blocks are placed into respective recesses; and a circumferential gap is defined between each shifting block and a corresponding recess along circumferential direction.