Core drill bit
    3.
    发明授权

    公开(公告)号:US11504779B2

    公开(公告)日:2022-11-22

    申请号:US16328651

    申请日:2017-09-21

    IPC分类号: B23B51/04 B24D5/06 B28D1/04

    摘要: A core drill bit 1 includes a tubular shaft 12, a mounting platform 31 provided on a proximal end of the tubular shaft 12 for mounting the core drill bit on a power tool 26, and an annular cutting section 2 provided with abrasive cutting segments 3 arranged at a distal end of the tubular shaft 12. A first transponder 24 is provided at the distal end of the tubular shaft 12. A repeater 28 is provided comprising a second transponder 29 at the proximal end of the tubular shaft 12, an antenna 33 facing the first transponder 24, and a wired connection 34 between the antenna 33 and the repeater 28.

    Core drill bit
    5.
    发明授权

    公开(公告)号:US11097358B2

    公开(公告)日:2021-08-24

    申请号:US16335113

    申请日:2017-09-21

    IPC分类号: B23B51/04 B28D1/04 B28D7/00

    摘要: A core drill bit 1 includes a tubular shaft 12, a mounting platform 34 provided on a proximal end of the tubular shaft 12 for mounting the core drill bit on a power tool 35, and an annular cutting section 2 provided with abrasive cutting segments 3 arranged at a distal end of the tubular shaft 12. The core drill bit 1 further includes a transponder 24 and a slit 27 in the tubular shaft 12. The slit 27 forms a slit antenna 26 for the transponder 24.