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:
May. 24, 1977
Filed:
Apr. 08, 1976
Applicant:
Inventors:
Richard Frank Cheney, Towanda, PA (US);
William Daniel Lafferty, Towanda, PA (US);
George Jacob Long, Wyalusing, PA (US);
Assignee:
GTE Sylvania Incorporated, Stamford, CT (US);
Primary Examiner:
Int. Cl.
CPC ...
B22F / ; C23C / ;
U.S. Cl.
CPC ...
75 / ; 428546 ; 75252 ; 106-1 ; 75 / ; 75 / ;
Abstract
Tungsten carbide-cobalt agglomerated flame spray powder is produced by spray drying a slurry of particles in an aqueous cobalt nitrate solution. The agglomerates are classified according to size and the out-of-size agglomerates are recycled. The classified agglomerates are heated in flowing hydrogen, to reduce the nitrate to cobalt metal, and then sintered to strengthen the agglomerates for subsequent flame spraying.