Measuring and testing – Instrument mechanism or transmission – Rate of change
Patent
1994-09-26
1995-11-21
Raevis, R.
Measuring and testing
Instrument mechanism or transmission
Rate of change
G01N 3300
Patent
active
054676592
ABSTRACT:
It is known that the properties of powders affect the ease or difficulty of handling in many industrial processes. In may cases, the only way to test the suitability of a particular powder for a given system is to pass a sample of that powder through the system. This involves using a large quantity of the material with the uncertainty that the properties of the material are in fact suitable for that system. Described herein is a test device which allows certain properties of a material in powder form to be determined without the need for large quantities of material. The device (10) comprises a frame (12, 14, 16, 18, 20) in which is mounted a curved test surface (26). An aperture (22) is provided in a top member (14) of the frame (12) to allow the material being tested to fall on to the test surface (26) to form a `footprint`. The `footprint` can then be measured to provide an indication of the properties of the material prior to it being introduced into a system in bulk.
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Eastman Kodak Company
Parulski Susan L.
Raevis R.
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