BEAD FOR SOFT POLYVINYL CHLORIDE TUBE TO SOLVE UNSTABILITY AT LOADING PART OF RING

摘要

PURPOSE: To manufacture a bead which fixes a ring on a finger by generating a small piece by cutting a soft polyvinyl chloride tube to solve unstability for the rotation of the ring at a loading part. ;CONSTITUTION: The bead can be manufactured by cutting an achromatic transparent tube of major diameter 5mm and minor diameter 3mm in a trapezoid of upper bottom around 12mm and lower bottom around 15mm, cutting both terminals of a lower bottom in U-shape, and dividing by cutting an upper bottom in a major axial direction.;COPYRIGHT: (C)1995,JPO