发明名称 Cutter bit
摘要 A cutter bit having a concave face surface has a base surface spaced from the concave face surface and a recess extending inwardly from the base surface, The recess is adapted to receive a portion of a tool holder that extends at least partially into the recess, A bearing member is interposed the body of the cutter bit and the portion of the tool holder disposed in the recess.
申请公布号 US5333938(A) 申请公布日期 1994.08.02
申请号 US19930082708 申请日期 1993.06.28
申请人 CATERPILLAR INC. 发明人 GALE, PRESTON L.
分类号 B28D1/18;E21B10/12;E21B10/20;E21B10/50;E21C35/18;E21C35/19;(IPC1-7):F21B10/50 主分类号 B28D1/18
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