公开(公告)号：US20180171723A1

公开(公告)日：2018-06-21

申请号：US15578737

申请日：2016-05-02

Applicant: SANDVIK INTELLECTUAL PROPERTY AB

Inventor： Anna NORDSTRAND ,  Petri AHOLA ,  Rasmus HEMPH

IPC: E21B17/03 ,  E21B17/04 ,  E21B17/16 ,  E21B6/04

CPC classification number: E21B17/03 ,  E21B6/00 ,  E21B6/04 ,  E21B17/04 ,  E21B17/16

Abstract: A rock drilling shank adaptor has at least one flush hole extending radially through the body of the adaptor in communication with an axially extending internal bore. The flush hole in a direction from an external side to an internal side includes a surface at a rearward region that is curved at least at a radially inner portion to extend in an axial direction towards a forwardmost end of the adaptor to increase the resistance of the adaptor to stress concentrations whilst achieving a desired flow rate of flushing fluid flow into the internal bore.

公开(公告)号：US20160215569A1

公开(公告)日：2016-07-28

申请号：US15023767

申请日：2014-09-01

Applicant: SANDVIK INTELLECTUAL PROPERTY AB

Inventor： Rasmus HEMPH ,  Tomas Sh JANSSON

IPC: E21B17/04 ,  E21B21/00 ,  E21B1/00

CPC classification number: E21B17/04 ,  E21B1/00 ,  E21B1/02 ,  E21B17/03 ,  E21B17/0426 ,  E21B21/00

Abstract: A rock drilling shank adaptor includes an elongate body having an internal flushing bore and an entry hole through the sidewall of the adaptor in fluid communication with the internal bore. The flushing hole is optimised to reduce the likelihood of fracture at the wall of the adaptor and in particular includes straight sections at axially forward and rearwardmost regions of the hole.

Abstract translation: 钻石柄适配器包括具有内部冲洗孔的细长主体和穿过适配器的侧壁的进入孔，其与内部孔流体连通。 冲洗孔被优化以减少在适配器的壁处断裂的可能性，并且特别地包括在孔的轴向前部和最后部区域的直线部分。

公开(公告)号：US20180066477A1

公开(公告)日：2018-03-08

申请号：US15551681

申请日：2016-02-03

Applicant: SANDVIK INTELLECTUAL PROPERTY AB

Inventor： Rasmus HEMPH ,  Conny KRAFT

IPC: E21B10/38

CPC classification number: E21B10/38 ,  E21B10/567

Abstract: A rock drill bit includes a head provided at one end of an elongate shank. A plurality of fluid flushing passageways extend axially from an internal bore extending through the shank with at least one fluid flushing passageway having an exit end at the front face formed as an elongate slot having a length greater than a width to facilitate the rearward transport of cut rock fragment.