Patent ID: 8061756

Claim:
An electrically operated seat slide apparatus comprising: a lower rail having a generally U-shape cross-section and fixed to a floor of a vehicle body; an upper rail having a generally reversed U-shape cross-section and slidably disposed to the lower rail, a seat being connected to the upper rail; a screw shaft disposed inside the upper rail and extending in a direction of length of the upper rail; a nut threadedly connected to the screw shaft and connected to the lower rail; a motor disposed to a side of the upper rail; a gear box located around an axis of the screw shaft and fixed to the upper rail to transmit a rotation of the motor to the screw shaft; and first and second plates disposed inside and connected to the upper rail to be perpendicular to an axis of the screw shaft, the first and second plates being respectively located at positions between which the nut intervenes in an axial direction of the screw shaft to set a moving range of the nut; and first and second stoppers respectively disposed outside the first and second plates in the axial direction of the screw shaft and located opposite to each other in the axial direction of the screw shaft.