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    • 4. 发明授权
    • Tapping tee assembly
    • 攻丝三通组合
    • US5425395A
    • 1995-06-20
    • US305013
    • 1994-09-13
    • Michael Brennan
    • Michael Brennan
    • B23B41/08F16L47/34F16K43/00F16L41/06
    • F16L47/345Y10T137/6123Y10T408/5628Y10T408/6793Y10T408/896Y10T83/68
    • The tapping apparatus includes a body that receives a cutter and sleeve. The cutter and sleeve advance together to form an opening in the sidewall of a main conduit about which the body is secured. The sleeve includes external threads that grip into the conduit sidewall. Thereafter, retraction of the cutter leaves the sleeve in place to secure the tapping apparatus to the conduit and establish fluid communication therethrough. The cutter and sleeve preferably have different thread pitches so that the sleeve advances at a slightly faster rate than the cutter. This facilitates sealing engagement between the external surface of the main conduit and the body. Additionally, a one-way drive arrangement is provided between the sleeve and cutter so that once the sleeve is positioned in place, the cutter can be removed without altering the location of the sleeve.
    • 攻丝装置包括接收切割器和套筒的主体。 切割器和套筒一起前进,在主导管的侧壁上形成开口,主体围绕该侧壁固定。 套筒包括夹紧导管侧壁的外螺纹。 此后,切割器的缩回使套管保持在适当的位置,以便将攻丝装置固定到管道上并建立与其通过的流体连通。 切割器和套筒优选地具有不同的螺距,使得套筒以比切割器稍快的速度前进。 这有助于主导管的外表面和主体之间的密封接合。 此外,在套筒和切割器之间提供单向驱动装置,使得一旦套筒定位就位,可以移除切割器而不改变套筒的位置。