Composite seal for rotary cone rock bits
    5.
    再颁专利
    Composite seal for rotary cone rock bits 失效
    旋转锥形岩石复合密封

    公开(公告)号:USRE36452E

    公开(公告)日:1999-12-21

    申请号:US649954

    申请日:1996-07-08

    CPC分类号: E21B10/25 F16C33/74

    摘要: An elastomeric o-ring rock bit seal is disclosed with two or more integrally bonded elastomers or phenolic type materials joined together to form the seal. The dynamic sealing face adjacent the journal bearing is fabricated from an elastomer/phenolic engineered specifically for wear resistance The bulk of the seal adjacent the static seal retention cavity typically formed in the rotary cone is molded from an elastomer engineered specifically for precise control of the seal contact force adjacent the dynamic seal face when the seal is compressed against the dynamic face by the seal retention cavity in the cone.

    摘要翻译: 公开了一种弹性O型圈岩石钻头密封件,其具有连接在一起以形成密封件的两个或更多个整体结合的弹性体或酚类材料。 与轴颈轴承相邻的动态密封面由专门用于耐磨性设计的弹性体/酚醛制造。通常形成在旋转锥体中的静态密封保持腔相邻的密封件的大部分由专门用于精确控制密封件的弹性体模制而成 当密封件通过锥体中的密封保持腔压靠在动态面上时,邻近动态密封面的接触力。