| 摘要 |
PURPOSE: A spiral coil type weight with a core swivel part is provided to prevent the generation of additional environmental pollution due to harmful materials from the weight. CONSTITUTION: A spiral coil type weight with a core swivel part includes a copper wire-based coil part(20), and a core swivel part(10). The copper wire-based coil part is in a shape of a hollow cylinder by winding a copper wire. Hollow swivel bodies with ring parts are arranged at both end parts of the copper wire-based coil part. The ring parts are exposed through both end parts of the copper wire-based coil part. A small through hole is formed at the upper part of the copper wire-based coil part. The copper wire-based coil part is wound around the core swivel part. |
