发明名称 Device for punching holes in a bicycle rim
摘要 A device for punching holes in a bicycle rim includes a flange extending radially from a base, the flange having a plurality of rails disposed thereon each for a puncher slidably disposed thereon. Each of the punchers has a first block and a second block respectively extending upwardly from two ends thereof and a cylinder disposed longitudinally to each of the first blocks having a shaft retractably extending therefrom which extends through the first block and has a pin member disposed on a free end thereof. Each of the second blocks has a longitudinal hole defined therethrough so that when a bicycle rim is disposed between the first blocks and the second blocks each of the pin members punches a hole through the rim.
申请公布号 US5896796(A) 申请公布日期 1999.04.27
申请号 US19970869520 申请日期 1997.06.06
申请人 CHIH, CHEN-KENG 发明人 CHIH, CHEN-KENG
分类号 B21D28/30;(IPC1-7):B26F1/14;B26D7/26 主分类号 B21D28/30
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