公开(公告)号：US4524610A

公开(公告)日：1985-06-25

申请号：US528744

申请日：1983-09-02

申请人： J. Vincent Fitzgerald ,  Frank J. Matusik ,  Donald W. Nelson

发明人： J. Vincent Fitzgerald ,  Frank J. Matusik ,  Donald W. Nelson

IPC分类号： G01N9/00 ,  G01N11/16

CPC分类号： G01N11/167 ,  G01N9/002

摘要： A rotational vibratory viscometer-densitometer for in-line process control and similar applications, having an elastic hollow metal tube extending between two clamps, and a relatively rigid transverse yoke secured to the tube at a point midway between the clamps. The yoke has magnetically permeable ends and a magnetically permeable center portion. Electromagnets adjacent one end of the yoke and the center portion thereof interact with the yoke to cause the tube to oscillate simultaneously in torsion and in flexure at the natural frequency of the tube in combination with the fluid within it. The amplitude of torsional oscillation is maintained constant by a torsional detector and control circuit, and the power required to maintain said amplitude is determined, said power being a measure of the viscosity of the fluid flowing through the tube. The frequency of flexural oscillation of the tube is determined by a flexural detector and associated circuit, said frequency being a measure of the density of the fluid flowing through the tube.

摘要翻译： 用于在线过程控制和类似应用的旋转式振动粘度计密度计，具有在两个夹子之间延伸的弹性中空金属管，以及在夹具之间的中间点固定到管的相对刚性的横向轭。 轭具有导磁端和磁导中心部。 靠近轭的一端的电磁铁和其中心部分与磁轭相互作用，使得管子以与管内的流体相结合的管的固有频率的扭转和弯曲同时振荡。 扭转振荡的幅度由扭转检测器和控制电路保持恒定，并且确定维持所述振幅所需的功率，所述功率是流过管的流体的粘度的量度。 管的弯曲振荡的频率由弯曲检测器和相关联的电路确定，所述频率是流过管的流体的密度的量度。

公开(公告)号：US4299119A

公开(公告)日：1981-11-10

申请号：US129984

申请日：1980-03-13

申请人： J. Vincent Fitzgerald ,  Frank J. Matusik ,  Donald W. Nelson

发明人： J. Vincent Fitzgerald ,  Frank J. Matusik ,  Donald W. Nelson

IPC分类号： G01N11/14

CPC分类号： G01N11/14

摘要： A rotary viscometer of the type which measures the viscous torque to which a rotating spindle is subjected, by measuring the current drawn by the electric motor driving the spindle. True viscosity, i.e. the slope of the torque-spindle rotation speed curve, is approximated by varying the spindle speed stepwise in sets of speed measurements having a fixed speed difference, and obtaining the difference between the corresponding torque values for each set. By repeating this process throughout the desired speed range, an approximate derivative of the torque-speed curve is obtained, corresponding to an approximation of the true viscosity of the fluid being characterized.

摘要翻译： 通过测量由驱动主轴的电动机所吸取的电流，测量旋转主轴所承受的粘性转矩的旋转式粘度计。 通过以具有固定速度差的速度测量集合逐步改变主轴速度，并且获得每组的相应扭矩值之间的差值来逼近真实粘度，即扭矩 - 主轴转速曲线的斜率。 通过在整个期望的速度范围内重复该过程，获得扭矩 - 速度曲线的近似导数，对应于表征的流体的真实粘度的近似值。

公开(公告)号：US4312577A

公开(公告)日：1982-01-26

申请号：US66487

申请日：1979-08-13

申请人： J. Vincent Fitzgerald

发明人： J. Vincent Fitzgerald

IPC分类号： G01C21/36 ,  G09B29/10 ,  G01C22/02 ,  G03B21/00

CPC分类号： G01C21/36 ,  G09B29/108

摘要： A map display system for an automobile, in which a map is projected on a screen by optical magnification of a portion of a map disposed on a movable slide. A portion of the slide contains a list of locations such as cities, governmental institutions and points of interest, with an optical positioning code adjacent to each item of the list. Means is provided for automatically positioning the slide to display a selected location on the list, and for showing successive locations on the display in accordance with a prearranged itinerary as the automobile traverses the locations.

摘要翻译： 一种用于汽车的地图显示系统，其中通过用放置在可移动的载玻片上的地图的一部分的光学放大来在屏幕上投影地图。 幻灯片的一部分包含诸如城市，政府机构和兴趣点之类的位置列表，光学定位代码与列表的每个项目相邻。 提供了用于自动定位滑块以显示列表上的所选位置的装置，并且用于在汽车横穿该位置时根据预先安排的行程显示显示器上的连续位置。

公开(公告)号：US4754640A

公开(公告)日：1988-07-05

申请号：US26869

申请日：1987-03-17

申请人： J. Vincent Fitzgerald ,  Frank J. Matusik ,  Donald W. Nelson ,  John L. Schrag

发明人： J. Vincent Fitzgerald ,  Frank J. Matusik ,  Donald W. Nelson ,  John L. Schrag

IPC分类号： G01N11/16

CPC分类号： G01N11/162

摘要： A rheometer for determining the viscoelasticity of a liquid from the mechanical impedance which the liquid presents to an oscillating surface. The incremental power required to maintain a fixed amplitude of oscillation of the surface upon immersion in the liquid is determined. The differential shift in oscillation frequency due to immersion in the liquid is also determined. By relating (i) the incremental oscillation power to mechanical resistance presented by the liquid to the oscillating surface, and (ii) the differential shift in a oscillation frequency to the mechanical reactance presented by the liquid to the oscillating surface, the viscoelasticity of the liquid is determined. Applications include laboratory measurements and process control.

摘要翻译： 用于从液体呈现到振荡表面的机械阻抗确定液体的粘弹性的流变仪。 确定在浸入液体时保持表面振荡固定幅度所需的增量功率。 还确定了由于浸入液体中引起的振荡频率的差异偏移。 通过将（i）增量振荡功率与由液体提供给振荡表面的机械阻力相关联，以及（ii）振荡频率与液体对振荡表面的机械电抗的差异偏移，液体的粘弹性 决心，决意，决定。 应用包括实验室测量和过程控制。