The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 27, 1987
Filed:
Jun. 12, 1986
Manfred Gawol, Clausthal-Zellerfeld, DE;
Gerhard Adrian, Goslar, DE;
Dr. Hans Heubach GmbH & Co. KG, Langelsheim, DE;
Abstract
The dust producing properties of a pigment or dye are measured under conditions which close approximate those during handling. A vessel with baffles having pigment or dye therein is rotated for a specified time while air is drawn through the rotating vessel by a specified amount of vacuum applied downstream of the vessel. The baffles disturb the pigment or dye in the vessel, creating dust particles which are entrained in an airstream created by the vacuum. Larger particles trapped in this vacuum are removed by a separator, while the dust particles are trapped in the airstream are trapped by a filter. The dusting properties of the pigment or dye in the vessel may then be determined by weighing the filter.