Patents Assigned to Analysts, Inc.
  • Optical determination of amount of soot in oil sample
    Patent number: 5309213
    Abstract: Method and apparatus for determining the concentration of optically attenuating materials in fluids, such as soot in diesel engine lubricating oils. An optical cell is employed in the form of a very thin tapered sample volume which is inserted into a light beam. The attenuation of the beam is measured at a plurality of locations along the varying thickness of the sample.
    Type: Grant
    Filed: March 5, 1992
    Date of Patent: May 3, 1994
    Assignee: Analysts, Inc.
    Inventors: John B. Desjardins, William W. Seifert, Vernon C. Westcott
  • Timer trigger for capillary tube viscometer and method of measuring oil properties
    Patent number: 4616503
    Abstract: The present invention relates to an improvement in a capillary tube viscometer which includes light sensitive triggering means for timing the flow of oil between two points therein. The improvement includes optic fibers that are positioned on the tube at selected places. In addition, the tube includes impulse receiving means wherein the voltage received from start and stop positions are passed to triggering means and measuring means to translate the same into figures for manual or automatic calculation of time for the flow of oil.
    Type: Grant
    Filed: March 22, 1985
    Date of Patent: October 14, 1986
    Assignee: Analysts, Inc.
    Inventors: Donald W. Plungis, Charles S. Seymour, William Higgins