| 摘要 |
A piercing apparatus for piercing a small compressed gas bottle to quickly inflate an expandable sack ( 1 ) comprises a small gas bottle ( 6 ), a housing ( 20 ) carrying in an inner chamber ( 21 ) thereof a piercing element ( 7 ) having a bit ( 72 ) provided with an axial passageway ( 73 ) communicating with the sack ( 1 ), and a release mechanism ( 8 ), being charged by a counteracting spring ( 89 ) to push the piercing element ( 7 ) against the small bottle ( 6 ). The release mechanism comprises a release element, being connected to a flexible transmission ( 30 ) of control means ( 3 ), as a protuberance ( 87 ), and the piercing element ( 7 ) is fixed on a front end of a collet chock ( 70 ), which is provided with fingers ( 88 ) to grip the protuberance ( 87 ). The collet chock ( 70 ) is slidable between a gripping condition and a releasing condition of the protuberance ( 87 ) upon the operation of control means.
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