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    • 8. 发明授权
    • Metal face seal for an earth-boring bit
    • 用于钻孔的金属表面密封
    • US07413037B2
    • 2008-08-19
    • US11226948
    • 2005-09-15
    • Chih LinDon Quy NguyenGregory L. RicksTerry J. Koltermann
    • Chih LinDon Quy NguyenGregory L. RicksTerry J. Koltermann
    • E21B10/22E21B10/25F16J15/22
    • E21B10/25
    • A metal face seal for an earth boring drill bit where the drill bit has a bit body, at least one bit leg, a bearing pin on each bit leg, and a cone rotatably mounted on each bearing pin. The metal face seal is located in the cavity formed between the interior surface of the cone and the bearing pin. The metal face seal consists of a rigid seal ring having a forward surface that engages a rotating seal surface of the cone. An energizer ring biases the rigid seal ring toward the rotating seal surface. A secondary seal engages the bearing pin surface, the energizer ring, and the rigid seal ring. The secondary seal ring has a protuberance on its forward side for filling void spaces between the energizer ring, the rigid seal ring, and the secondary seal ring.
    • 一种用于钻孔钻头具有钻头体,至少一个位腿,每个钻头腿上的支承销以及可旋转地安装在每个轴承销上的锥体的钻孔钻头的金属表面密封件。 金属表面密封件位于形成在锥体的内表面和轴承销之间的空腔中。 金属表面密封件由刚性密封环组成,其具有接合锥体的旋转密封表面的前表面。 活力环将刚性密封环朝向旋转的密封表面偏压。 辅助密封件接合轴承销表面,增力环和刚性密封环。 二次密封环在其前侧具有用于填充增力环,刚性密封环和次级密封环之间的空隙的突起。
    • 9. 发明授权
    • Mud diverter for earth-boring bit
    • 泥土分流器为地球钻头
    • US07306061B2
    • 2007-12-11
    • US11060331
    • 2005-02-17
    • Chih C. LinGregory L. Ricks
    • Chih C. LinGregory L. Ricks
    • E21B10/22
    • E21B10/25
    • A rolling cone earth boring bit has a diverter and an arcuate segment located between the bit leg and the back face of the cone to divert debris from the seal gland area. The diverter has an oblong or oval base that inserts into a mating hole in a last machined surface of the bit. The diverter has a head that is wedge-shaped and protrudes from the hole into a clearance between the back face and the last machined surface. The head has an inner side that is spaced from an annular wall of the back face by a small uniform clearance. The head has an outer side that is oblique to the annular wall of the back face region to divert debris from the clearance. The segment is spaced from the diverter and is concentric to an axis of the bearing pin.
    • 滚动钻孔钻头具有分流器和位于钻头腿和锥体的后表面之间的弧形段,以从密封压盖区域中转移碎屑。 分流器有一个长圆形或椭圆形的底座,插入钻头的最后加工表面中的一个配合孔中。 分流器具有楔形的头部,并且从孔中突出到后表面和最后加工表面之间的间隙。 头部具有与背面的环形壁间隔开的小的均匀间隙的内侧。 头部具有与背面区域的环形壁倾斜的外侧,以从间隙转移碎屑。 该段与分流器间隔开并且与轴承销的轴线同心。