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    • 12. 发明授权
    • Spoolless film takeup chamber with improved spooling spring
    • 无卷轴膜卷取腔,改进了卷簧
    • US6016984A
    • 2000-01-25
    • US183259
    • 1998-10-30
    • R. Winfield TraftonJohn F. Miller
    • R. Winfield TraftonJohn F. Miller
    • G03B17/30G03B23/02
    • G03B17/30
    • A spoolless film takeup chamber with a pair of expandable film coiling springs. The springs are flat springs coiled generally in a spiral configuration. The thickness of the springs varies from the point at which the springs are attached to the inner takeup chamber out to the free, distal ends of the springs such that the thickness at the distal end is less than the thickness at end attached to chamber. Preferably the thickness decreases continuously from the attached ends to the distal ends of the spring. The effect is to reduce the spring rate at the outer ends of the springs thereby maintaining a relatively constant spring force on the film as the diameter of the film coil grows as compared to springs with a constant spring rate along the length of the springs. Additionally, the radius of curvature of a segment of each spring at the distal end is longer than the radius of curvature at an intermediate segment of the spring to better conform the spring to the outer circumference of the film coil thereby avoiding interference between the ends of the springs and features on the film such as perforations.
    • 具有一对可膨胀膜卷绕弹簧的无假胶膜卷取室。 弹簧是通常以螺旋构造盘绕的扁平弹簧。 弹簧的厚度从弹簧附接到内部卷绕室的点变化到弹簧的自由的远端,使得远端处的厚度小于连接到腔室的端部的厚度。 优选地,厚度从连接的端部连续地减小到弹簧的远端。 效果是降低弹簧的外端的弹簧刚度,因为与沿着弹簧的长度具有恒定的弹簧刚度的弹簧相比,当薄膜线圈的直径增长时,保持膜上的相对恒定的弹簧力。 此外,每个弹簧在远端处的段的曲率半径比在弹簧的中间段处的曲率半径更长,以使弹簧更好地适应于膜线圈的外圆周,从而避免 弹簧和胶片上的特征,如穿孔。
    • 13. 发明授权
    • Crane apparatus
    • 起重设备
    • US4768442A
    • 1988-09-06
    • US914145
    • 1986-10-01
    • John F. Miller
    • John F. Miller
    • E01B25/22
    • E01B25/22
    • Overhead crane apparatus is disclosed incorporating an extruded aluminum alloy rail structure for runway and bridge girder applications. The relatively light weight and low cost rail structure is shaped to provide a trolley passageway protected from the ingress of deleterious substances, and is further contoured to provide a shaped cavity for ready reception of novel clamp means facilitating the imposition of increased loads on existing crane apparatus. The rail structure during the extrusion process may also be formed with fluid passages in the side walls thereof.
    • 公开了一种用于跑道和桥梁应用的挤压铝合金轨道结构的顶置起重机装置。 相对较轻重量和低成本的轨道结构被成形为提供保护有害物质进入的手推车通道,并且进一步构造成提供成形腔,用于准备接收新颖的夹紧装置,从而有助于在现有的起重机装置上施加增加的负载 。 在挤出过程中的轨道结构也可以在其侧壁中形成有流体通道。
    • 15. 发明申请
    • Measuring electrophoretic mobility
    • US20190011398A1
    • 2019-01-10
    • US15999077
    • 2018-08-17
    • John F. Miller
    • John F. Miller
    • G01N27/447G01N21/51G02F1/11G01N15/02
    • An apparatus and method to obtain electrophoretic mobility information from a dilute colloidal dispersion using electrophoretic light scattering (ELS) is disclosed. Both laser Doppler electrophoresis and phase analysis light scattering data analysis methods may be applied to a scattered light signal simultaneously. Unlike previous ELS apparatuses and methods, the disclosed apparatus and method can measure electrophoretic mobility distributions in high ionic strength media. It can detect the presence of electrochemical phenomena such as electrode polarization and electrolysis, and apply corrections to the measured electrophoretic mobility values thus providing electrophoretic mobility information about samples with greater accuracy, precision, and reliability than prior ELS implementations. Improvements to the optical configuration of the apparatus are also disclosed that increase the robustness of the apparatus. Many of the aspects of the disclosure may be applied to the measurement of electrophoretic mobilities of particles in low polarity media and also particles with low surface charge in polar or non-polar media with greater accuracy, precision, and reliability than prior ELS implementations.