Patent ID: 7945299

Claim:
A spring employed in a semi-automatic sliding device for a sliding-type portable communication terminal, comprising opposite ends and at least two coil spring sections located between the opposite ends, the spring being formed in a zigzag shape, wherein the at least two coil spring sections comprises a first coil spring section, a central coil spring section connected to the first coil section and wound spirally at least two times, and a second coil spring section connected to the central coil spring section and positioned in symmetry to the first coil spring section about the central coil spring section, and wherein each of the first and second coil spring sections is wound once, and the central coil spring section is wound at least two times, the central coil spring being formed in such a manner that the diameters of the turns thereof are reduced when approaching the center of the central coil spring, thereby being formed in a slim shape.