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    • 3. 发明申请
    • Method and Apparatus for Measuring Borehole Mud Resistivity
    • 测量孔眼电阻率的方法和装置
    • US20120299596A1
    • 2012-11-29
    • US13114183
    • 2011-05-24
    • Scott KENNEDYTimothy JOHNSONDouglas MACLEAN
    • Scott KENNEDYTimothy JOHNSONDouglas MACLEAN
    • G01V3/00
    • G01V3/20
    • Apparatuses, methods for manufacturing an apparatus and methods for measuring a fluid resistivity are provided. An apparatus for measuring a fluid resistivity includes a fluid column defining structure, two current injecting electrodes, voltage measurement electrodes, and two additional electrodes. The fluid column defining structure is configured to allow a fluid, whose resistivity is to be measured, to fill a fluid column inside the fluid column defining structure. The two current injecting electrodes are configured to inject a known current into the fluid column. The voltage measurement electrodes are configured to measure a voltage across a measurement column included in the fluid column. The two additional electrodes disposed inside the fluid column defining structure, outside of the positions of the two current injecting electrodes in the longitudinal direction are electrically connected to each other.
    • 提供了用于制造装置的方法和用于测量流体电阻率的方法。 用于测量流体电阻率的装置包括流体柱限定结构,两个电流注入电极,电压测量电极和两个附加电极。 流体柱限定结构被配置为允许其电阻率被测量的流体填充流体柱限定结构内部的流体柱。 两个电流注入电极构造成将已知电流注入流体柱。 电压测量电极被配置为测量流体柱中包括的测量柱两端的电压。 设置在流体柱限定结构内部的两个附加电极在两个电流注入电极的纵向方向的位置之外彼此电连接。
    • 9. 发明授权
    • Composite active filter material
    • 复合有源滤材
    • US4619948A
    • 1986-10-28
    • US689249
    • 1985-01-07
    • T. Scott KennedyPaul F. Herman
    • T. Scott KennedyPaul F. Herman
    • A41D13/11A62B23/02B01D39/16C08J9/02C08G18/14A24B15/28B29C67/00
    • C08J9/02A41D13/1146A62B23/02B01D39/1676C08J2375/04Y10S264/13Y10S425/816
    • A reticulated hydrophilic foam substrate and bonded active surface particle powder composite filter material is generated by foam polymerization of a prepolymer phase with an aqueous phase. The reticulated hydrophilic foam substrate is characterized by relatively low pressure drop and low resistance to flow through the foam substrate. The prepolymer phase is a hydrophilic polyurethane prepolymer receptive to the aqueous phase for foam polymerization upon mixing with the aqueous phase. The aqueous phase in turn is a pourable and flowable slurry mixture of water, active surface particle powder, and surfactant wetting agent. The aqueous phase includes sufficient water or other evaporable liquid to provide a protective liquid layer or coating over the active surfaces of the powder particles. Upon polymerization of the mixture the active surface powder particles are distributed over and bonded to the webs of the reticulated hydrophilic foam and the major portion of the active surfaces are free from obstruction and available for active filter functioning. The aqueous phase and prepolymer phase upon mixing may be poured, flowed, or injected into a suitable respirator or mask mold to provide a lightweight single piece respirator face mask.
    • 通过预聚物相与水相的泡沫聚合产生网状亲水性泡沫基材和粘合的活性表面颗粒粉末复合材料过滤材料。 网状亲水性泡沫基材的特征在于相对低的压降和低的流过泡沫基材的阻力。 预聚物相是在与水相混合时接受水相的亲水性聚氨酯预聚物进行泡沫聚合。 水相依次是水,活性表面颗粒粉末和表面活性剂润湿剂的可倾倒和可流动的浆料混合物。 水相包括足够的水或其它可蒸发的液体,以在粉末颗粒的活性表面上提供保护性液体层或涂层。 在混合物聚合时,活性表面粉末颗粒分布在网状亲水性泡沫的网上并结合到网状亲水性泡沫的网上,并且主要表面的主要部分没有阻塞并且可用于主动过滤器功能。 混合后的水相和预聚物相可以倾倒,流动或注入合适的呼吸器或掩模模具中以提供轻质的单件式呼吸器面罩。