发明名称 Countersink with disposable insert
摘要 A countersink utilizes standard, inexpensive inserts for cutting. Thus the tool never needs sharpening. The inserts may be mounted at several locations on the tool, providing a versatile tool that can handle a wide range of hole sizes.
申请公布号 US4591302(A) 申请公布日期 1986.05.27
申请号 US19840643163 申请日期 1984.08.22
申请人 LOVENDAHL, NORMAN H. 发明人 LOVENDAHL, NORMAN H.
分类号 B23B51/10;(IPC1-7):B23B51/10 主分类号 B23B51/10
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