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:
Dec. 14, 1976
Filed:
Oct. 17, 1974
Applicant:
Inventors:
Kenneth R Janowski, Wheaton, IL (US);
Charles J Levesque, Elk Grove Village, IL (US);
Assignee:
Universal Oil Products Company, Des Plaines, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
B22F / ;
U.S. Cl.
CPC ...
75211 ; 75200 ; 75222 ; 75224 ; 148126 ;
Abstract
Improved method of sintering a powder metal body at temperatures substantially lower than the normal sintering temperature of the metal. A body formed of powder metal particles is redox cycled by being repeatedly and alternately subjected to an oxidizing atmosphere and a reducing atmosphere. The number of redox cycles required to achieve sintering is inversely proportional to the temperature. The metal must be one which will undergo surface oxidation and reduction in the atmospheres and at the temperature used.