发明名称 Dragline bucket
摘要 The invention relates to a dragline bucket wherein the center of gravity is along a line making an angle of at least 90 DEG with a line from the tooth tip to the horizontal pivot axis of the dragline hitch. Also disclosed is a movable hitch.
申请公布号 US4791738(A) 申请公布日期 1988.12.20
申请号 US19870065052 申请日期 1987.06.22
申请人 ESCO CORPORATION 发明人 BRISCOE, TERRY L.
分类号 E02F3/47;E02F3/46;E02F3/48;E02F3/60;E02F9/14;(IPC1-7):E02F3/48 主分类号 E02F3/47
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