Patent ID: 8191276

Claim:
A golf ball liner comprising: a fixing member having a predetermined shape to house a golf ball; fixing pads disposed at both ends of the fixing member to hold the golf ball not to move; a rotating member having a diameter smaller than that of the fixing member, both ends of the rotating member inserted between the fixing member and the fixing pads, the rotating member rotatably supported by the respective ends of the fixing member; at least one pen disposed at an inner side of the rotating member to contact the golf ball for drawing a line on a surface of the golf ball along a circumference of the golf ball when the rotating member rotates around the golf ball; and an elastic member disposed between the pen and the rotating member to presses the pen toward the golf ball positioned in the golf ball liner, wherein the elastic member is compressed when the golf ball is positioned in the golf ball liner, and a degree of the compression of the elastic member varies according to a shape of a surface of the golf ball to makes the pen continuously contact the surface of the golf ball.