发明名称 Tamping tool
摘要 Tamping tool for tamping railroad ballast comprising shank and detachable foot member. In one form, there is a detachable wedge inserted between the upper portion of the foot member and the shank. In another form, there is an arcuate joint between the foot member and the shank.
申请公布号 US4068594(A) 申请公布日期 1978.01.17
申请号 US19760655078 申请日期 1976.02.04
申请人 CROWELL, JAMES E. 发明人 CROWELL, JAMES E.
分类号 E01B27/16;(IPC1-7):E01B27/00 主分类号 E01B27/16
代理机构 代理人
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