公开(公告)号：WO1990001105A1

公开(公告)日：1990-02-08

申请号：PCT/US1989003035

申请日：1989-07-13

Applicant: KENNAMETAL INC.

Inventor： KENNAMETAL INC. ,  STIFFLER, Stephen, P. ,  BEACH, Wayne, H. ,  PRIZZI, John, J.

IPC: E21C35/18

CPC classification number: E21C35/183 ,  E21C2035/1806 ,  E21C2035/1813 ,  E21C2035/1816 ,  Y10T407/26

Abstract: A cemented carbide tip (3) is provided with a socket (21) for mounting onto the steel shank (5) of a cutter bit. The socket (21) has an annular convex surface (23) therein extending from the earth engaging portion of the tip (3) radially inwardly and forwardly. This convex surface (23) is brazed to the forward end (9) of steel shank (5) to form a cutter bit.

公开(公告)号：WO2003023189A1

公开(公告)日：2003-03-20

申请号：PCT/US2002/027700

申请日：2002-08-30

Applicant: KENNAMETAL INC.

Inventor： STIFFLER, Stephen, P.

IPC: E21C35/197

CPC classification number: E21C35/197

Abstract: A rotatable cutting bit (10), and rotatable cutting bit-bit holder (20) and washer (19) that have increased wear resistance characteristics. The washer includes a front face (44) and a generally flat gear face (48), said front face has a plurality of ridges (55), said ridges each have a top face forming a bearing surface for the cutting bit to enhance rotation of the cutter bit and the flat rear face reduces rotation of said washer. The relative rotation between the rear face (48) of the washer and front of the block face (23) is reduced in the present invention. The improved wear resistance properties of the invention reduce the amount of necessary maintenance of rotary drums in the field resulting in reduced downtime and increased productivity.

Abstract translation: 一种可旋转的切削刀头（10），以及具有增加的耐磨特性的可旋转切削钻头刀座（20）和垫圈（19）。 垫圈包括前表面（44）和大致平坦的齿轮面（48），所述前表面具有多个脊（55），所述脊各自具有形成用于切削刀头的支承表面的顶面，以提高 刀头和平的后表面减小了所述垫圈的旋转。 在本发明中，垫圈的后表面（48）和块面（23）的前部之间的相对旋转减小。 本发明的改进的耐磨性能减少了现场旋转鼓的必要维护量，从而减少了停机时间并提高了生产率。

公开(公告)号：WO1992004529A1

公开(公告)日：1992-03-19

申请号：PCT/US1991001886

申请日：1991-03-21

Applicant: KENNAMETAL INC.

Inventor： KENNAMETAL INC. ,  ROWLETT, Don, C. ,  STIFFLER, Stephen, P. ,  BEACH, Wayne, H.

IPC: E21C35/18

CPC classification number: E21C35/197 ,  E21C2035/1806 ,  E21C2035/1816

Abstract: A rotatable cutting tool (10) for impacting and fragmenting a substrate. The tool (10) has a tool body (12) containing a valve seat (24) in the forward end (14) thereof wherein a hard insert (32) affixes to the tool body (12) within the valve seat (24). The hard insert (32) comprises an integral tip segment (34) and an integral axially rearward segment (68) joined to the tip segment by an integral mediate segment (48). A trio of generally vertically disposed flanges (52) project radially outward from the mediate segment (48). The flanges (52) are integral with the mediate portion (48). Each flange (52) presents at least one side surface (60). During operation, the substrate fragments impinge against the side surface (60) to urge the tool (10) to rotate about its central longitudinal axis.

公开(公告)号：WO2008076690A1

公开(公告)日：2008-06-26

申请号：PCT/US2007/086964

申请日：2007-12-10

Applicant: KENNAMETAL INC. ,  BEACH, Wayne, H. ,  STIFFLER, Stephen, P. ,  HELSEL, Eric, Paul

Inventor： BEACH, Wayne, H. ,  STIFFLER, Stephen, P. ,  HELSEL, Eric, Paul

IPC: E01C23/09 ,  B28D1/22

CPC classification number: B28D1/188

Abstract: A pedestal assembly (20) for an asphalt cutter and/or a longwall shearer includes a cutting bit (26) detachably secured in a tool body (27) mounted within a block (24) with the block (24) fixedly secured to a pedestal (22). The first end of the pedestal (22) has a recess (46) to overlap the second end (42) of an adjacent pedestal (23) when the pedestals (22) are mounted on the outer surface of a drum (34) of the cutter. The first end (40) of the pedestal (22) further includes a lateral flat surface portion (74) for deflecting material made loose by the cutting bit (26).

Abstract translation: 一种用于沥青切割机和/或长壁切割机的基座组件（20）包括可拆卸地固定在安装在块体（24）内的工具主体（27）中的切割钻头（26），块体（24）固定地固定到基座 （22）。 当基座（22）安装在所述基座（22）的鼓（34）的外表面上时，所述基座（22）的第一端具有与相邻基座（23）的第二端（42）重叠的凹部（46） 刀。 基座（22）的第一端（40）还包括用于使由切削刀头（26）松动的材料偏转的侧面平面部分（74）。

公开(公告)号：WO1990001106A1

公开(公告)日：1990-02-08

申请号：PCT/US1989003036

申请日：1989-07-13

Applicant: KENNAMETAL INC.

Inventor： KENNAMETAL INC. ,  STIFFLER, Stephen, P. ,  BEACH, Wayne, H.

IPC: E21C35/18

CPC classification number: E21C35/183 ,  E21C2035/1806 ,  E21C2035/1813 ,  E21C2035/1816

Abstract: A cutter bit (1) for use in construction and/or excavation applications is provided having a hard wear resistant tip (3) joined to a steel shank (5). The wear resistant tip (3) is rotationally symmetric about its longitudinal axis (X-X) and has a rear end having a socket (23) therein in which is bonded a steel protrusion (17) on the forward end of the steel shank (5). The tip socket (23) and an outer rearmost facing surface (25) on the tip rear end have respective pluralities of first and second dimples (31, 32) formed thereon and protruding therefrom for spacing, centering and aligning the tip (3) on the bit body (5) to facilitate formation of a braze joint (7) of a desired given cross-sectional thickness profile between the tip (3) and bit body (5).

公开(公告)号：WO1992002693A1

公开(公告)日：1992-02-20

申请号：PCT/US1991002240

申请日：1991-04-02

Applicant: KENNAMETAL INC. ,  REEDRILL, INC.

Inventor： KENNAMETAL INC. ,  REEDRILL, INC. ,  STIFFLER, Stephen, P. ,  BEACH, Wayne, H. ,  FROST, Robert, L.

IPC: E02F09/28

CPC classification number: E02F9/285 ,  E02F9/2858

Abstract: A digging tooth (10) including a body portion (12) and a plurality of hard wear resistant conical inserts (14). The body portion includes a generally planar distal portion (16), a medial portion (18), and a bifurcated proximal portion (20) having at least two prongs (22, 24) separated from each other to form a slot (28). The conical inserts are secured to and spaced along said distal portion and have a generally cylindrical body portion (38) and a top portion (40) which tapers to a point to form a tip (42), wherein the ratio of the diameter of the cylindrical body portion to the spacing distance between the tips of the conical inserts is between 0.50 and 0.80 and, preferably, 0.72.

公开(公告)号：WO1991002884A1

公开(公告)日：1991-03-07

申请号：PCT/US1990002262

申请日：1990-04-25

Applicant: KENNAMETAL INC.

Inventor： STIFFLER, Stephen, P. ,  MACINTYRE, Ray, C. ,  SHEIRER, Daniel, C. ,  BEACH, Wayne, H.

IPC: E21C35/18

CPC classification number: E21B10/56 ,  E21C35/183 ,  E21C2035/1806 ,  E21C2035/1816

Abstract: A rotatable cutting tool (10) having a tool body (12) with a socket (26) contained in the forward end thereof wherein a hard insert (32) is affixed to the tool body (12) within the socket (26). The hard insert (32) comprises an integral tip portion (34) and an integral cylindrical flange portion (42) joined to the tip portion (34) by integral mediate portion (36, 38, 40). An integral boss (50) projects from the bottom surface (44) of the flange portion (42) wherein the boss (50) is of a generally frusto-conical shape which corresponds to the generally frusto-conical volume defined by the socket (26). A plurality of dimples (60, 64) projects from the bottom surface (44) of the flange portion (42) and the frusto-conical surface (52) of the boss (50) to provide for a braze joint of uniform thickness between the hard insert (32) and the tool body (12).

公开(公告)号：WO2010024999A2

公开(公告)日：2010-03-04

申请号：PCT/US2009/051905

申请日：2009-07-28

Applicant: KENNAMETAL INC. ,  BEACH, Wayne, H. ,  STIFFLER, Stephen, P. ,  HELSEL, Eric, P. ,  KELLER, Donald, E.

Inventor： BEACH, Wayne, H. ,  STIFFLER, Stephen, P. ,  HELSEL, Eric, P. ,  KELLER, Donald, E.

IPC: E21C35/18 ,  E21B10/00 ,  E21B10/36

CPC classification number: E21C35/197 ,  E21C35/187

Abstract: A cutting tool assembly mounted on a rotating drum and having a base block, a wear sleeve and a cutting bit wherein a seal is located between the base block and wear sleeve is disclosed. A fluid passage spans from the rotating drum to a discharge location between the wear sleeve and the shank of the cutting bit. The fluid lubricates the shank of the cutting bit and bore of the wear sleeve allowing the cutting bit to rotate freely within the wear sleeve. Rotation of the cutting bit promotes even wear and long life of the bit.

Abstract translation: 公开了一种安装在旋转滚筒上并具有基座，磨损套筒和切割钻头的切削工具组件，其中密封件位于基座和磨损套筒之间。 流体通道从旋转滚筒延伸到磨损套筒和切割钻头的柄之间的排放位置。 流体润滑切削钻头的柄部和磨损套筒的孔，允许切削刀头在磨损套筒内自由旋转。 切割钻头的旋转可以提高钻头的均匀磨损和长寿命。

公开(公告)号：WO1991002882A1

公开(公告)日：1991-03-07

申请号：PCT/US1990001313

申请日：1990-03-09

Applicant: KENNAMETAL INC.

Inventor： KENNAMETAL INC. ,  STIFFLER, Stephen, P. ,  BEACH, Wayne, H. ,  ROWLETT, Don, C. ,  SHIRK, Steven, D.

IPC: E21B10/44

CPC classification number: E21B10/56 ,  E21B10/44

Abstract: An excavating tooth (40) for use in connection with an earth drilling auger (10) includes a main body portion (42) terminating in a working end (54) and a shank (44) extending upwardly from the main body portion (42). A plurality of tungsten carbide inserts (64) are embedded in the working end (54) of the tooth (40) and project outwardly therefrom. During drilling operations, the carbide inserts (64) engage the earth and chisel away rock and other material which is subsequently conveyed to the surface by the flight structure (18, 20) of the auger (10). The inserts (64) are inclined forwardly with respect to the plane of the shank (44) to enable the inserts (64) to withstand greater loads than before. In the preferred embodiment, the insert (64) has a generally cylindrical proximal end embedded in the working end (54) of the auger tooth (40) and a distal end including forward and rearward inclined surfaces (66, 68) terminating in a transverse cutting edge (70).

公开(公告)号：WO1990001107A1

公开(公告)日：1990-02-08

申请号：PCT/US1989003057

申请日：1989-07-13

Applicant: KENNAMETAL INC.

Inventor： KENNAMETAL INC. ,  STIFFLER, Stephen, P.

IPC: E21C35/18

CPC classification number: E21C35/183 ,  E21C2035/1806 ,  E21C2035/1813 ,  E21C2035/1816

Abstract: A cemented carbide tip (3) for a cutter bit (1) is rotationally symmetric about its longitudinal axis (x-x) and has a socket (23) in its rear end for brazing to a steel protrusion (17) on a steel tool shank (5). The tip socket (23) and an outer rearmost facing surface (25) on the tip rear end have respective pluralities of first and second dimples (31, 32) thereon for spacing, centering and aligning the tip (3) on the bit body (5) to facilitate formation of a braze joint (7) of a desired given cross-sectional thickness profile between the tip (3) and bit body (5).