发明名称 Digging tooth
摘要 A replaceable digging tooth for an earth auger including a generally oblong body member and a shank depending from the body member and receivable in a support block of the earth auger. The body member includes an elongated leading surface, an elongated trailing surface and first and second side surfaces. The leading surface, trailing surface and first and second side surfaces terminate in a forward working face having a plurality of inserts. Each insert has a generally cylindrical portion integral a top portion which tapers to a point to form a conical tip. The tips of the inserts are aligned to define a linear cutting line which is inclined with respect to a reference plane perpendicular to the axis of the shank and the axes of the inserts are aligned parallel to form a cutting plane which is inclined with respect to the reference plane.
申请公布号 US5143163(A) 申请公布日期 1992.09.01
申请号 US19910751914 申请日期 1991.08.29
申请人 KENNAMETAL INC.;REEDRILL INC. 发明人 STIFFLER, STEPHEN P.;WAITE, DAVID J.;FROST, ROBERT L.;BEACH, WAYNE H.
分类号 E21B10/44;E21B10/56 主分类号 E21B10/44
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