TOOL BIT HAVING A BIMETAL TIP
    2.
    发明申请

    公开(公告)号:WO2021163251A1

    公开(公告)日:2021-08-19

    申请号:PCT/US2021/017549

    申请日:2021-02-11

    Abstract: A tool bit includes a drive portion configured to be selectively coupled to a tool. The drive portion is composed of a first material. The tool bit includes a working end portion having a shape configured to correspond with a recess of a fastener for the working end portion to engage and drive the fastener. The working end portion includes a first segment and a second segment. The first segment is located between the second segment and the drive portion. The first segment is composed of the first material. The second segment is fixed to the first segment at a connection interface. The second segment is composed of a second material different than the first material.

    DIE HEAD FOR PIPE THREADER
    3.
    发明申请

    公开(公告)号:WO2021263147A1

    公开(公告)日:2021-12-30

    申请号:PCT/US2021/039163

    申请日:2021-06-25

    Abstract: A die head for cutting threads in a pipe. The die head includes a drive portion, a die retention portion, a cap, and a plurality of windows. The drive portion has a plurality of recesses configured to receive torque from a pipe threading machine. The die retention portion includes a plurality of die posts. Each die post is configured to receive a die having teeth for cutting the threads in the pipe. The cap is coupled to the die retention portion. Each window is defined between each pair of adjacent die posts and the cap. An end of each die adjacent the cap is visible through a corresponding window of the plurality of windows such that all of the teeth of the die are visible through the corresponding window.

    STEP DRILL BIT
    4.
    发明申请
    STEP DRILL BIT 审中-公开

    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

    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.

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