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    DOUBLE BLADE HOLE-SAW CUP AND PILOT BIT
    5.
    发明申请
    DOUBLE BLADE HOLE-SAW CUP AND PILOT BIT 审中-公开

    公开(公告)号：US20180333789A1

    公开(公告)日：2018-11-22

    申请号：US15986552

    申请日：2018-05-22

    申请人： Thomas J. Spera

    发明人： Thomas J. Spera

    IPC分类号： B23B51/04 ,  B23B31/107

    CPC分类号： B23B51/0473 ,  B23B31/1074

    摘要： A hole-saw comprises a cylindrical body, a plate, a mandrel, and a clamping member. A cutting edge is formed at an open end of the body and is disposed about the body's rotational axis. The plate is disposed at an opposite end of the body, is rotationally coupled to the body, and is oriented perpendicular to the body's rotational axis. In one embodiment the cutting edge has at least one inner saw tooth. In another embodiment the cutting edge has at least one outer saw tooth. Other embodiments include a cylindrical body with a cutting edge at both ends. Either cutting edge can have an inner or an outer tooth to easily remove the plug. The pilot drill bit can have a burr to prevent jamming.

    Hole saw assembly
    9.
    发明授权
    Hole saw assembly 有权

    公开(公告)号：US09707626B2

    公开(公告)日：2017-07-18

    申请号：US14520357

    申请日：2014-10-22

    申请人： ROTE MATE INDUSTRY CO., LTD.

    发明人： Ying-Tsung Lai

    IPC分类号： B23B51/04

    CPC分类号： B23B51/0473 ,  B23B51/0426 ,  Y10T279/17752 ,  Y10T408/895

    摘要： A hole saw assembly is revealed. The hole saw assembly is a hole saw with a quick change drill rod. The hole saw assembly includes a quick release device and the drill rod, both arranged at the hole saw. The drill rod is inserted through the quick release device and the quick release device is for fastening and releasing a drill head of the drill rod. Thereby the drill rod is fitted over the quick release device and users can fasten and release the drill rod quickly. Users can also quickly mount a shank of the drill rod quickly into the hole saw. The drill rod is fast slid out of the quick release device for replacement of a new drill rod. Then the shank is locked on the hole saw so that the shank and the hole saw can rotate synchronously.

    Quick release rotary tool mandrel
    10.
    发明授权
    Quick release rotary tool mandrel 有权

    公开(公告)号：US09687917B2

    公开(公告)日：2017-06-27

    申请号：US14070236

    申请日：2013-11-01

    申请人： Timothy Carl Pamatmat

    发明人： Timothy Carl Pamatmat

    IPC分类号： B23B51/12 ,  B23B51/04

    CPC分类号： B23B51/0473 ,  B23B2240/04 ,  B23B2251/02 ,  B23B2260/136 ,  Y10T408/953

    摘要： A quick connect/disconnect mechanism for a rotary bit having a central mounting hole at a proximal end includes a shaft extending axially and having a proximal end adapted to be releasably secured in a rotary tool and a distal end having a spud extending distally and axially therefrom. A collet has a plurality of retainer arms arrayed circularly about the axis and extending distally, each retainer arm including a catch extending radially outwardly from a distal end thereof. A support ring extends about the shaft adjacent to said distal end thereof, the support ring being translatable from a first position in which the retainer arms extend freely distally and are deflectable sufficiently to be inserted through the central mounting hole of a rotary bit; to a second position in which the support ring and collet translate proximally and the spud extends distally to engage the retainer arms so they cannot deflect and release the rotary bit.