专利名称：Retaining element for a jack element发明人：David R. Hall,Francis Leany,Joe Fox,Tyson J.
Wilde,Boyd Black
申请号：US11774645申请日：20070709公开号：US07506706B2公开日：20090324
专利附图：
摘要：A drill bit having a bit body intermediate a shank and a working face having atleast one cutting insert. A bore is formed in the working face co-axial within an axis ofrotation of the drill bit. A jack element is retained within the bore by a retaining element
that intrudes a diameter of the bore.
申请人：David R. Hall,Francis Leany,Joe Fox,Tyson J. Wilde,Boyd Black
地址：2185 S. Larsen Pkwy. Provo UT 84606 US,2185 S. Larsen Pkwy. Provo UT 84606US,2185 S. Larsen Pkwy. Provo UT 84606 US,2185 S. Larsen Pkwy. Provo UT 84606US,2185 S. Larsen Pkwy. Provo UT 84606 US
国籍：US,US,US,US,US
代理人：Tyson J. Wilde
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