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:
Jul. 26, 1988
Filed:
Apr. 03, 1987
John L Walter, Scotia, NY (US);
Ami E Berkowitz, Schenectady, NY (US);
General Electric Company, Schenectady, NY (US);
Abstract
Apparatus is provided for the production of ultrafine powder. The powder is produced by spark erosion within an electric discharge cell. The starting material for production of the powder is a body in chunk form of the material to be pulverized. The material is contained in an electric discharge cell having a fine mesh screen bottom. The cell and its contents are immersed in a dielectric fluid such as water, liquified gas or an organic base liquid. The cell and its contents are vibrated to cause the chunks to separate repeatedly and momentarily. A sparking voltage is impressed repeatedly through the body to develop sparks between confronting portions of separated chunk surfaces. Small particles produced as a result of the sparking fall through the screen of the cell and are collected as product.