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    • 4. 发明授权
    • Valve stem repair kit and method
    • 阀杆修理套件及方法
    • US08955535B2
    • 2015-02-17
    • US13410841
    • 2012-03-02
    • Roger KliskeyRockford Tyson
    • Roger KliskeyRockford Tyson
    • F16K15/20B23P6/00
    • B23P6/00Y10T29/49407Y10T29/49734Y10T29/5195Y10T137/3584Y10T137/598
    • A method for repairing damaged valve stem assemblies includes enlarging a bore within a body of a valve stem to form an enlarged bore portion and creating a conical hole in an end of the valve stem body around the enlarged bore portion. Internal threads are created within the enlarged bore portion, and a valve stem repair extension is installed in the enlarged bore portion. The valve stem repair extension has a beveled surface that facilitates formation of a hermetic seal between the valve stem body and the valve stem repair extension. The steps of enlarging the bore and creating the conical hole may both be performed using a countersinking drill bit having a beveled cutting portion.
    • 用于修复损坏的阀杆组件的方法包括扩大在阀杆的主体内的孔,以形成扩大的孔部分,并且在阀杆本体的围绕扩大的孔部分的端部中形成锥形孔。 在扩大的孔部分内形成内螺纹,并且在扩大的孔部分中安装有阀杆修补延伸部。 阀杆修补延伸部具有斜面,有助于在阀杆本体和阀杆修补延伸部之间形成气密密封。 扩大孔和产生锥形孔的步骤可以使用具有斜切割部分的锪孔钻头进行。