公开(公告)号：US20160348442A1

公开(公告)日：2016-12-01

申请号：US15114605

申请日：2014-12-15

Applicant: SANDVIK INTELLECTUAL PROPERTY AB

Inventor： Andreas RINDESKAR ,  John HAMMARGREN

IPC: E21B10/38 ,  E21B10/40

CPC classification number: E21B10/38 ,  E21B10/40

Abstract: A percussive rock drill bit has a head and a shank in which a plurality of flushing grooves extend radially outward and axially rearward from a front face. The flushing grooves are configured to optimize the axially rearward flow of rock particles and fines entrained in the flushing fluid. In particular, each groove is generally convex relative to a longitudinal axis of the drill bit and is declined continuously relative to the axis from a first groove end to a second groove end.

Abstract translation: 冲击式凿岩钻头具有头部和柄部，其中多个冲洗槽从前表面径向向外并且向后轴向延伸。 冲洗槽构造成优化岩石颗粒和夹带在冲洗流体中的细颗粒的轴向向后流动。 特别地，每个凹槽相对于钻头的纵向轴线通常是凸的，并且相对于从第一凹槽端到第二凹槽端的轴线连续地下降。

公开(公告)号：US20160215573A1

公开(公告)日：2016-07-28

申请号：US14917284

申请日：2014-08-27

Applicant: SANDVIK INTELLECTUAL PROPERTY AB

Inventor： Tomas Sh JANSSON ,  Andreas RINDESKAR

IPC: E21B17/042 ,  E21B1/00

CPC classification number: E21B17/0426 ,  E21B1/00 ,  E21B1/02

Abstract: A percussion drilling apparatus is arranged to affect at least one characteristic of a shock wave produced in a drill string. The apparatus includes an elongate energy transmission adaptor having a shock wave modification sleeve configured with a free end and an attachment end projecting radially from an outer surface of the adaptor.

Abstract translation: 冲击钻孔装置被布置成影响在钻柱中产生的冲击波的至少一个特性。 该装置包括细长能量传输适配器，其具有构造为具有自由端的冲击波修改套筒和从适配器的外表面径向突出的附接端。