发明名称 TAMPING TOOL
摘要 A tamping tool comprising a shank having at its lower end a paddle of hardened steel construction, such paddle having a front face, and one or more bits of abrasion resistant material secured to the front, exposed face of the paddle and terminating at its or their lower end or ends in a ledge which underlies the lower end of the paddle. Exposed faces of the paddle and adjacent parts of the shank are covered by abrasion resistant material.
申请公布号 CA2085915(A1) 申请公布日期 1993.06.24
申请号 CA19922085915 申请日期 1992.12.21
申请人 CROWELL, JAMES E. 发明人 CROWELL, JAMES E.
分类号 E01B27/16;(IPC1-7):E01B27/14;E01C19/32 主分类号 E01B27/16
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