发明名称 Resilient Pick Shank
摘要 In one aspect of the invention, a pick assembly comprises a pick shank press fitted within a bore of a pick holder. The pick comprises a pick head opposite the shank. The shank also comprises at least one longitudinal slot extending towards the pick head along the shank from a distal end of the shank. The slot allows the shank to resiliently collapse upon insertion into the bore while still allowing the shank to maintain a press fit while within the bore.
申请公布号 US2009267403(A1) 申请公布日期 2009.10.29
申请号 US20090491897 申请日期 2009.06.25
申请人 HALL DAVID R;JEPSON JEFF;PETERSON GARY 发明人 HALL DAVID R.;JEPSON JEFF;PETERSON GARY
分类号 E21C35/18 主分类号 E21C35/18
代理机构 代理人
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