Wear resistant filament wear guides and method of making the same
US4043623A · kind A · utility
8Cited by
4References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 22, 1975 |
| Grant date | Aug 23, 1977 |
| Priority date | — |
| Expiry date | Aug 22, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2701/31
- WIPO fieldHandling
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.