Patents Examined by Richard C. Quiesser
  • Suspended-solids meter
    Patent number: 4140007
    Abstract: In order to determine the percentage of suspended solids in a slurry, a hollow tube is extended into a slurry tank in which the solids are kept in suspension by a mixer. The tube allows the liquid within it to be isolated from the action of the mixer, so the solids settle out of the tube. A pressure difference between points at the same elevation inside and outside of the tube is measured, and this gives a percent-solids indication in which error due to dissolved solids is negligible.
    Type: Grant
    Filed: March 24, 1978
    Date of Patent: February 20, 1979
    Assignee: Combustion Engineering, Inc.
    Inventors: Steven C. Bosland, William H. Kingston
  • Ultrasonic inspection method of pulse reflection defect detection using a thru-transmission automatic distance-amplitude compensation
    Patent number: 4004454
    Abstract: An automatic distance amplitude correction device for automatically correcting for amplitude variations and signals caused by the attenuation of sound propagating through a test specimen wherein a signal is transmitted through a test specimen and the reflection is detected and furthermore, a through signal is detected after the signal has passed through the test specimen only a single time and utilized to provide improved automatic distance amplitude compensation.
    Type: Grant
    Filed: May 7, 1975
    Date of Patent: January 25, 1977
    Assignee: TRW Inc.
    Inventor: Istvan M. Matay