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Apparatus, systems and related methods for dispensing and /or evaluating dry powders

  • US 7,118,010 B2
  • Filed: 06/26/2003
  • Issued: 10/10/2006
  • Est. Priority Date: 05/10/2002
  • Status: Expired due to Fees
First Claim
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1. A method for selecting and/or determining customizable excitation signals for dispensing dry powders, comprising the steps of:

  • providing an elongate flow channel having a floor of piezoelectric material;

    selecting an angle of orientation for the flow channel such that at least a portion of the flow channel angularly extends in a non-vertical, non-horizontal orientation in the axial direction;

    providing a quantity of a target dry powder;

    outputting a vibration excitation signal having a first carrier frequency from a signal generator to the piezoelectric material;

    flowing the dry powder out of the flow channel;

    outputting a vibration excitation signal having a second carrier frequency from the signal generator to the piezoelectric material; and

    determining a dispensing vibration excitation signal for the target dry powder that generates a repeatable or a uniform or a repeatable and uniform fluid-like substantially non-agglomerated flow output based on flow data from the first and second vibration excitation signals.

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