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:
Jan. 11, 1994
Filed:
Dec. 03, 1992
Yasuo Matsuzawa, Bedford, NH (US);
Hans I Wallsten, Denens, CH;
Hirotsugu K Yasuda, Columbia, MO (US);
Plasmacarb Inc., Wilmington, DE (US);
Abstract
An apparatus for low temperature plasma treatment of powder particles for modifying the surface properties thereof, comprising means for the creation of a low pressure zone and, in association therewith, at least one cascade arc torch generator to form a plasma torch which is directed into said low pressure zone, means for the supply by gravity of powder particles to be treated into said low pressure zone and conduit means for the removal of the treated powder particles from said low pressure zone, said cascade arc generator having an orientation such that said plasma torch enters said low pressure zone at a downward angle (.alpha.) to the horizontal of from about 15.degree. to about 60.degree., and said conduit means being directed away from said plasma torch at an upward angle (.beta.) to the horizontal of from about 15.degree. to about 80.degree.;