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1. 发明申请

WO1990003468A1 IMPROVED TAMPING BLADE WITH IMPROVED INSERTS 审中-公开
标题翻译：改进的刀片改进的刀片
公开(公告)号：WO1990003468A1
公开(公告)日：1990-04-05
申请号：PCT/US1989003935
申请日：1989-09-12
申请人： KENNAMETAL INC.
发明人： KENNAMETAL INC. , ISAKOV, Edmund , MANWAY, Terry, A.
IPC分类号： E01B27/16
CPC分类号： E01B27/16
摘要： A tamping pad (15) includes a cutout (22) along the length of the leading edge (23) thereof to support at least one wear-resistant insert (24) rigidly positioned therein. The wear-resistant insert (24) comprises a body having a first side (26) and a second opposed side (28), first and second opposed major surfaces and first and second opposed shoulders (30 and 32). The side (26) of the insert body defines a tamping blade leading edge (42) which is arcuate in shape between the opposed shoulders. The arcuate leading edge of the insert body has a radius which defines the length of the arcuate edge to be of a ratio of about 1.3 relative to the width of the carbide insert (24). Preferably, the plurality of inserts (24) extends end to end along the length of the leading edge (23) of the blade to define the interrupted leading edge of the tamping pad as formed by the curvilinear leading edge of each of the plurality of inserts (24).

2. 发明申请

WO1989001086A1 MASONRY TWO-PRONG ROTARY DRILL BIT 审中-公开
标题翻译： MASONRY两个旋转钻头
公开(公告)号：WO1989001086A1
公开(公告)日：1989-02-09
申请号：PCT/US1988002268
申请日：1988-07-06
申请人： KENNAMETAL INC.
发明人： KENNAMETAL INC. , ISAKOV, Edmund
IPC分类号： E21B10/42
CPC分类号： E21B10/54
摘要： A drill (11) for forming holes in masonry includes a supporting body (13) having an axis of rotation (15) therethrough and a pair of inserts (17, 19) mounted at one end (2) thereof by mounting portions (23, 25). Each insert has a main cutting edge (27), and external cutting edge (33), an upper internal cutting edge (29) and a lower internal cutting edge (31). The upper and lower internal cutting edges define a center relief (35) having an upper conical shaped portion (37) with an angle of relief between about 60 to 90 degrees and a lower cylindrical shaped portion (39). There is a ratio of between about 5 to 8 between the diameter of the drill and the diameter of the lower cylindrical shaped portion. There is a ratio of between about 2 to 2.5 between the diameter of the drill and the largest diameter of the conical shaped portion.
摘要翻译：用于在砖石中形成孔的钻头（11）包括具有穿过其中的旋转轴线（15）的支撑体（13）和通过安装部分（23,23）安装在其一端（2）处的一对插入件（17,19） 25）。每个插入件具有主切削刃（27）和外部切削刃（33），上部内部切削刃（29）和下部内部切削刃（31）。上部和下部内部切割边缘限定具有中间凸起（35），该中心凸起具有上部圆锥形部分（37），其具有大约60度至90度之间的释放角度和下部圆柱形部分（39）。在钻头的直径和下圆柱形部分的直径之间存在约5至8之间的比率。在钻头的直径和锥形部分的最大直径之间存在约2至2.5之间的比率。

3. 发明授权

EP0439473B1 IMPROVED TAMPING BLADE WITH IMPROVED INSERTS 失效
标题翻译： STAMPF片插入。
公开(公告)号：EP0439473B1
公开(公告)日：1994-06-15
申请号：EP89910488.9
申请日：1989-09-12
申请人： KENNAMETAL INC.
发明人： ISAKOV, Edmund , MANWAY, Terry, A.
IPC分类号： E01B27/14
CPC分类号： E01B27/16
摘要： A tamping pad (15) includes a cutout (22) along the length of the leading edge (23) thereof to support at least one wear-resistant insert (24) rigidly positioned therein. The wear-resistant insert (24) comprises a body having a first side (26) and a second opposed side (28), first and second opposed major surfaces and first and second opposed shoulders (30 and 32). The side (26) of the insert body defines a tamping blade leading edge (42) which is arcuate in shape between the opposed shoulders. The arcuate leading edge of the insert body has a radius which defines the length of the arcuate edge to be of a ratio of about 1.3 relative to the width of the carbide insert (24). Preferably, the plurality of inserts (24) extends end to end along the length of the leading edge (23) of the blade to define the interrupted leading edge of the tamping pad as formed by the curvilinear leading edge of each of the plurality of inserts (24).

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