| 摘要 |
PURPOSE: A cylindrical safety knife is provided to clearly cut a cut surface and to safely use the knife because a blade does not contact to a body directly. CONSTITUTION: A cylindrical safety knife comprises a body(1) and a blade(2). The body is made of a strong, tough, and flexible material. The blade is formed in the inner side of the body. The blade is made of a strong and bent material. The safety knife safely and clearly cuts a cylinder having thin thickness. The blade is firmly attached to the body to prevent the separation of the blade from the body. |
