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:
Aug. 23, 1977
Filed:
Aug. 22, 1975
Applicant:
Inventors:
John J Rausch, Antioch, IL (US);
Ray J Van Thyne, Oak Lawn, IL (US);
Assignee:
Surface Technology Corporation, Oak Lawn, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16C / ;
U.S. Cl.
CPC ...
308238 ; 2421 / ; 308241 ;
Abstract
Filament wear guides which are characterized by excellent resistance to abrasive filament wear. Also, the method of their fabrication. A chromium surface on a substrate is controllably oxidized or nitrided and oxidized. Such oxidation or nitriding plus oxidizing is accomplished thermally. The coatings consist of oxide alone, or oxide formed in conjunction with the nitride depending upon the treatment employed. Resulting chromium oxide or oxy-nitride surface layer is nonparticulate and substantially impervious.