X-ray particle size analyzer

Details X-ray particle size analyzer X-ray particle size analyzer

1987-11-25

1990-04-24

Howell, Janice A.

X-ray or gamma ray systems or devices

Specific application

Absorption

378 55, 378 57, 356246, 356441, G01N 2306

Patent

active

049205501

ABSTRACT:
An x-ray sedimentation particle size analyzer in which data is taken only at particular positions along the sedimentation cell, and each such position is individually calibrated. Presentation of the data in the form of a particle size distribution curve can be accomplished very accurately using interpolation techniques. The sedimentation cell design is free of the effects of undesirable density gradients, capable of detecting and removing bubbles, capable of attaining a highly uniform dispersion of sample prior to sedimentation, and including a safety interlock device for blocking x-ray projection when the cell is being accessed.

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Deposition of James P. Olivier taken Feb. 9, 1987, (excerpt) pp. 87-110.
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Forms 1449 (sheets 1-4) from Reexamination No. 90/000,064 of U.S. Pat. No. 3,621,243 and listed art, 11-1971.

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