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    • 11. 发明授权
    • Drilling attachment
    • 钻孔附件
    • US07371034B2
    • 2008-05-13
    • US10517128
    • 2003-06-06
    • John Clark
    • John Clark
    • B23B47/34B23B51/06
    • B28D1/041B23Q11/0046B23Q11/005B23Q11/1092Y10T279/3406Y10T408/453Y10T408/455Y10T408/51Y10T408/895Y10T408/896
    • A drilling attachment for use in wet and dry drilling operations includes a housing having first and second fluid conduits, and a drive shaft mounted within the housing and having fluid transmitting first and second end portions in fluid communication with a respective first and second fluid conduit. In one embodiment, at any time one end of the drive shaft is coupled to a drive unit and the other end of the drive shaft is coupled to a core drill bit. In a dry drilling operation, dust is extracted from the core of the drill bit, is passed through the drive shaft and exits the housing via one of the fluid conduits. In a wet drilling operation, fluid such as water is passed through the other of the fluid conduits, through the drive shaft and into the core of the drill bit.
    • 用于湿和干钻井操作的钻孔附件包括具有第一和第二流体导管的壳体和安装在壳体内的驱动轴,并且具有流体传输与相应的第一和第二流体导管流体连通的第一和第二端部。 在一个实施例中,在任何时候,驱动轴的一端连接到驱动单元,并且驱动轴的另一端连接到芯钻头。 在干式钻井操作中,灰尘从钻头芯中抽出,通过驱动轴并通过其中一个流体导管离开壳体。 在湿式钻井操作中,诸如水之类的流体通过驱动轴通过另一个流体导管并进入钻头的芯部。
    • 15. 发明申请
    • A Disc Brake
    • 盘式制动器
    • US20070137951A1
    • 2007-06-21
    • US11306234
    • 2005-12-20
    • Christopher ByrdJohn Clark
    • Christopher ByrdJohn Clark
    • F16D55/08
    • F16D55/2245F16D65/18F16D2121/14F16D2125/64F16D2125/66F16D2127/08
    • An actuator arrangement for a disc brake for moving first and second friction members into engagement with a rotor and effect a brake application. The actuator arrangement includes first and second levers that are pivotally connected to an anchor located in a plane that is perpendicular to first and second rails on which the first and second friction member are retained, a third lever that is connected to the first lever and a yoke to receive a second end of the second lever and align a first ramp surface thereon with a second ramp surface on its end and an input linkage. The input linkage receives an input force and moves on the first and second ramp surfaces to pull on the first lever and push on the second lever to move the first and second friction members into engagement with the rotor to effect a brake application.
    • 一种用于盘式制动器的致动器装置,用于将第一和第二摩擦构件移动成与转子接合并实现制动应用。 致动器装置包括第一和第二杠杆,第一和第二杠杆枢转地连接到位于垂直于第一和第二轨道的平面中的锚固件,第一和第二摩擦构件被保持在该平面上;连接到第一杠杆的第三杠杆和 接收第二杆的第二端并将其上的第一斜面对准其端部上的第二斜面和输入连杆。 输入联动装置接收输入力并在第一和第二斜坡表面上移动以拉动第一杠杆并推动第二杠杆以将第一和第二摩擦构件移动成与转子接合以实现制动施加。
    • 17. 发明申请
    • Fluoroacrylate-mercaptofunctional copolymers
    • 氟丙烯酸酯 - 巯基官能共聚物
    • US20060142518A1
    • 2006-06-29
    • US11027605
    • 2004-12-28
    • Zai-Ming QiuJohn ClarkRamesh Kumar
    • Zai-Ming QiuJohn ClarkRamesh Kumar
    • C08F118/02
    • C08F220/38
    • A copolymer comprises repeating units derived from at least one co-reactant comprising two or more mercapto functional groups, and repeating units derived from a fluoroacrylate comprising the reaction product of: (a) at least one fluorochemical alcohol represented by the formula: C4F9—X—OH wherein: R=hydrogen or an alkyl group of 1 to 4 carbon atoms, m=2 to 8, Rf═CnF2n+1, n=1 to 5, y=0 to 6, and q=1 to 8; (b) at least one unbranched symmetric diisocyanate; and (c) at least one hydroxy-terminated alkyl (meth)acrylate or 2-fluoroacrylate monomer having 2 to about 30 carbon atoms in its alkylene portion.
    • 共聚物包含衍生自至少一种包含两个或多个巯基官能团的共反应物的重复单元和衍生自氟代丙烯酸酯的重复单元,该重复单元包含以下反应产物:(a)至少一种由下式表示的含氟醇: -line-formula description =“In-line Formulas”end =“lead”?> C 3 -X-OH <?in-line-formula description = “直链式”末端=“尾”→其中:R =氢或1至4个碳原子的烷基,m = 2至8,R f -C n = 1〜5,y = 0〜6,q = 1〜8; (b)至少一种非支化对称二异氰酸酯; 和(c)至少一种羟基封端的(甲基)丙烯酸烷基酯或其亚烷基部分具有2至约30个碳原子的2-氟丙烯酸酯单体。