Particulate flowmeter

• US 4,320,657 A
• Filed: 04/29/1980
• Issued: 03/23/1982
• Est. Priority Date: 04/29/1980
• Status: Expired due to Term

• Current Assignee: ICI America Incorporated (Nouryon BV)
• Original Assignee: ICI America Incorporated (Nouryon BV)
• Inventors: Johnson, Joseph L. III
• Primary Examiner(s): WOODIEL, DONALD
• Application Number:
  US06/144,917
• Time in Patent Office: 693 Days
• Field of Search: 73/432 R
• US Class Current: 73/866
• CPC Class Codes: G01N 11/06 by timing the outflow of a known quantity
• CPC Class Codes: G01N 2033/0091 Powders
• CPC Class Codes: G01N 33/0091 Powders

Abstract

An apparatus for measuring the flowability of particulate materials from a vessel through a die metering means.

Claims

1. An apparatus for determining the flowability of powdered or granular material which comprises (a) a vertically disposed vessel having an upper orifice and a lower orifice;

(b) said lower orifice surrounded by a bottom portion of said vessel which bottom portion has an inner face and an outer face, (c) a pharmaceutical tablet die, having an opening therethrough, positioned against the outer face so that the opening in the die is in unobstructive communication with the lower orifice, (d) a hollow column centrally positioned in said vessel so that the lower end of said column is positioned against the inside face of said vessel, and (e) a moveable retaining means mounted on said vessel to hold said die in tight contact with the said outter face.

2. An apparatus of claim 1 wherein the vessel is substantially cylindrical in shape.

3. An apparatus of claim 1 containing means for imparting a controlled vibration of said vessel and connected die.

4. An apparatus of claim 1 wherein the shape opening in the said pharmaceutical die is selected from the group consisting of oval, square, star, round, capsule and polygon.

5. An apparatus of claim 1 having in conjunction therewith means for measuring the output rate of the material passing through said die.

6. An apparatus for determining the flowability of powdered or granular material which comprises (a) a vertically disposed vessel having an upper orifice and a lower orifice, (b) said lower orifice surrounded by a bottom portion of said vessel which bottom portion has an inner face and an outer face, (c) a pharmaceutical tablet die, having an opening therethrough, positioned against the outer face so that the opening in the die is in unobstructive communication with the lower orifice, and (d) a moveable retaining means mounted on said vessel to hold said die in tight contact with the said outer face.