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    • 2. 发明授权
    • Use of selected ethers of monofunctional alcohols in drilling fluids
    • 在钻井液中使用选择的单官能醇醚
    • US5318955A
    • 1994-06-07
    • US37499
    • 1993-03-24
    • Heinz MuellerGerhard StollClaus-Peter HeroldStephan von Tapavicza
    • Heinz MuellerGerhard StollClaus-Peter HeroldStephan von Tapavicza
    • C09K8/34C09K7/06
    • C09K8/34
    • The invention describes the use of water-insoluble esters with flash points above 80.degree. C., from monohydric alcohols of natural and/or synthetic origin with at least 4 carbon atoms, preferably at least 6 carbon atoms in the alcohol radicals, as the oil phase, or a constituent of the oil phase of invert drilling fluids which exist as W/O-emulsions, have a dispersed aqueous phase and ideally also have further usual additives in the continuous oil phase, which is fluid and pumpable in the temperature range of 0.degree. to 5.degree. C., and which are suitable for the environment-friendly development of, e.g., petroleum and natural gas deposits. Drilling fluids of the above type are also described which are characterized in that they contain as the continuous oil phase, or dissolved in ecologically-acceptable water-insoluble oils, an additive of at least largely water-insoluble ethers from monohydric alcohols, the oil phase in each case being fluid and pumpable in the temperature range of 0.degree. to 5.degree. C. and having flash points above 80.degree. C.
    • 本发明描述了闪点高于80℃的水不溶性酯,其具有天然和/或合成来源的至少4个碳原子,优选至少6个碳原子的醇基中的一元醇作为油 相或作为W / O乳液存在的倒置钻井液的油相的成分具有分散的水相,并且理想地在连续油相中还具有进一步通常的添加剂,其在流体和可泵送的温度范围内是可流动的 0℃〜5℃,适用于石油天然气矿床的环境友好型开发。 还描述了上述类型的钻井液,其特征在于它们作为连续油相包含或溶解在生态上可接受的水不溶性油中,至少主要是来自一元醇的水不溶性醚的添加剂,油相 在每种情况下都是在0℃至5℃的温度范围内流动并可泵送,闪点高于80℃。
    • 10. 发明授权
    • Trimming device with ergonomic handle bar
    • 带人体工程学手柄的修剪装置
    • US5740613A
    • 1998-04-21
    • US691265
    • 1996-08-02
    • Helmut SwistunGerhard StollMartin Lambe
    • Helmut SwistunGerhard StollMartin Lambe
    • A01D34/68A01D34/90
    • A01D34/902
    • A trimmer has a drive motor, a cutting tool, and a drive shaft connecting the drive motor and the cutting tool. A protective tube encloses the drive shaft. A connector is provided for connecting a handle bar, having a first and a second section, to the protective tube. The first and second sections are parallel to one another, and the first section is connected to the protective tube. The first section has a free end with a first handle and the second section has a free end with a second handle. The handle bar is positioned asymmetrically relative to the longitudinal axis of the protective tube. The handle bar has a bent portion, with a first and a second bend, connecting the first and second sections. The bent portion is positioned adjacent to the connector. In the operating position of the trimmer, the longitudinal axis of the second section is displaced relative to the longitudinal axis of the first section along the longitudinal axis of the protective tube.
    • 修剪器具有驱动马达,切割工具和连接驱动马达和切割工具的驱动轴。 保护管围绕驱动轴。 提供一种用于将具有第一和第二部分的把手连接到保护管的连接器。 第一和第二部分彼此平行,并且第一部分连接到保护管。 第一部分具有带有第一把手的自由端,第二部分具有带有第二把手的自由端。 把手杆相对于保护管的纵向轴线不对称地定位。 手柄具有弯曲部分,具有连接第一和第二部分的第一和第二弯曲部。 弯曲部分邻近连接器定位。 在修剪器的操作位置,第二部分的纵向轴线相对于第一部分的纵向轴线沿着保护管的纵向轴线移位。