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:
Mar. 02, 2004
Filed:
Sep. 25, 2002
Applicant:
Inventors:
Pekka Niemelä, Tornio, FI;
Martti Jankkila, Tornio, FI;
Eero Väänänen, Tornio, FI;
Assignee:
Outokumpu Oyj, Espoo, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65G 1/530 ;
U.S. Cl.
CPC ...
B65G 1/530 ;
Abstract
A conveyor belt for a continuously operated conveyor-type thermal treatment of a material bed includes metal conveyor belt elements that are connected to each other. Each conveyor belt element is formed with perforations in order to allow gas to flow through the conveyor belt. The perforations are distributed non-uniformly over the conveyor belt element and are located in at least two perforation zones. The perforation zones are separated from each other by perforation-free zones.