| 摘要 |
PROBLEM TO BE SOLVED: To reduce elasticity of a coil roller in the coil radial direction. SOLUTION: In the coil roller 3 which rolls, while making a curve in the center axis thereof, in the condition that a cylindrical outer peripheral surface 1 and a cylindrical inner peripheral surface 2 are brought in pressure-contact with each other, a plurality of cylindrical coil springs 5 and 6 are combined with each other to be used as one multi-threaded coil roller 3. COPYRIGHT: (C)2004,JPO
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