公开(公告)号：WO2022020704A1

公开(公告)日：2022-01-27

申请号：PCT/US2021/042939

申请日：2021-07-23

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： VAN ESSEN, James, J. ,  KRABBE, Jacob, A.

IPC: B23B51/00

Abstract: A step drill bit including a shank extending along a bit axis and a body having a proximal end adjacent the shank and a distal end opposite the proximal end. The body includes a bit tip adjacent the distal end. The bit tip includes a diameter in a direction perpendicular to the bit axis. The body defines a plurality of axially stacked, progressively sized steps including a first step adjacent and a terminal step. Each step of the plurality of steps defines a length and a diameter. The step drill bit also includes at least one flute in the body. Each flute extends from the distal end to the proximal end. The step drill bit includes a cutting edge on the flute. A ratio of the diameter of the bit tip to the length for a majority of the plurality of steps is in a range from 1.0 to 1.5.

公开(公告)号：WO2019023319A1

公开(公告)日：2019-01-31

申请号：PCT/US2018/043637

申请日：2018-07-25

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： THEILER, Smith, C. ,  KRABBE, Jacob, A. ,  ZIMMERMANN, Michael, J.

IPC: B25F5/00 ,  B25B23/00

Abstract: An angled adapter for coupling a tool bit to a tool includes a housing and a transmission assembly positioned in the housing. The transmission assembly is configured to convert an input torque about a first axis from the tool to an output torque about a second axis acting on the tool bit. The second axis is disposed at an angle relative to the first axis. The angled adapter also includes a shank supported by the housing and including a tool coupling portion configured to couple to the tool. The tool coupling portion has an outer dimension. The shank also includes a transmission coupling portion coupled to the transmission assembly, and an intermediate portion extending between the tool coupling portion and the transmission coupling portion. The intermediate portion has a diameter that is less than the outer dimension.