Powder fluidity detecting apparatus which includes a piezoelectr

Details Powder fluidity detecting apparatus which includes a piezoelectr Powder fluidity detecting apparatus which includes a piezoelectr

1993-11-18

1995-08-01

Royer, William J.

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118689, 355208, G03G 2100

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054383935

ABSTRACT:
A method for detecting a fluidity of powder includes the steps of: (a) making the powder come into contact with a surface of a piezoelectric element which is parallel with an oscillating direction of the piezoelectric element that generates traverse wave oscillations; (b) detecting electrical characteristics of the piezoelectric element under a condition of resonance; and (c) detecting the fluidity of the powder in accordance with a change in the electrical characteristics with respect to a reference value.

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European Search Report.

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