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:
Apr. 13, 1993
Filed:
Dec. 17, 1991
Applicant:
Inventors:
David E Bannick, Roseville, MN (US);
James S Nelson, Moundsview, MN (US);
Assignee:
BGK Finishing Systems, Inc., Blaine, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
C22B / ;
U.S. Cl.
CPC ...
266172 ; 266249 ; 432 15 ;
Abstract
An apparatus is disclosed for heat treating a granular material. The apparatus includes a retort having a volume sized to receive a bed of fluidizing particles at a predetermined elevation within the volume and a plurality of electrically powered infrared radiation sources. The sources are submerged within the bed. The apparatus includes a deflector plate for deflecting granular material from an upper elevation of said bed to close proximity to said radiation sources.