Processes and devices for determining properties of viscous flui

Details Processes and devices for determining properties of viscous flui Processes and devices for determining properties of viscous flui

1975-12-04

1977-01-11

Queisser, Richard C.

Measuring and testing

Liquid analysis or analysis of the suspension of solids in a...

Lubricant testing

23230B, 73 644, G01N 3316, G01N 1302

Patent

active

040020568

ABSTRACT:
A device for determining the rheological properties of a fluid comprises a pair of cooperating members, the working face of each member defining parallel discrete ridges or flutes, the outermost portions of which define ridge lines, the ridges of one member being crossed with respect to the ridges of the other member. A fluid sample is applied to the working face of one member and the working faces are pressed together so that the ridge lines of one member intersect the ridge lines of the other member at a matrix of points and so that volume increments of the fluid sample are defined. The contact surface area of the fluid sample with the substrate is substantially greater than the surface area of the general interface between the working faces. The force required to separate the fluid at the general interface defines the rheological properties of the fluid with improved accuracy.

REFERENCES:
patent: 2756587 (1956-07-01), Doble
patent: 3036459 (1962-05-01), Kendall
patent: 3463014 (1969-08-01), Katz et al.

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