| 摘要 |
PROBLEM TO BE SOLVED: To prevent an outer peripheral surface of a wheel of a caster from being marred and prevent floor made of wood from being marred without damaging fine appearance of the caster. SOLUTION: A wheel 30 of the caster is equipped with a wheel body 60 and a heat shrinkable tube 70. The wheel body 60 is made of a brass material, and the outer peripheral surface 60d, the both side surface 60a and the flange part 60b are finished so as to obtain fine appearance. The heat shrinkable tube 70 is made of polyolefin resin and has a tube shape. The heat shrinkable tube 70 coats the outer peripheral surface 60d of the wheel body 60. Since the heat shrinkable tube 70 coating the outer peripheral surface 60d of the wheel body 60 of the caster 1 is directly contacted to the floor 5 when a piano body moves on the floor 5, the outer peripheral surface 60d of the wheel body 60 made of brass is prevented from flawing and the floor 5 is also prevented from flawing. COPYRIGHT: (C)2008,JPO&INPIT
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