| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a novel and useful piercing tool for hollow vessel easy to operate with excellent safety with extremely simple structure. <P>SOLUTION: This piercing tool for hollow vessel 1 comprises a piercing shaft 5 having a piercing needle 3 at the tip, a can holder 7 axially slidably provided at the tip part of the piercing shaft 5, and a hammer handle 9 axially slidably provided at the base end part of the piercing shaft 5. An engagement groove 27 to be engaged with a guide pin 13 provided on the piercing shaft 5 is formed in the can holder 7. This tool further comprises a compression spring 29 for energizing the piercing needle 3 to be regularly stored in a slidable cylindrical part 23 and protruded from the slidable cylindrical part 23 only in piercing operation. <P>COPYRIGHT: (C)2003,JPO |
