Abrading – Abrading process – Utilizing fluent abradant
Reexamination Certificate
2006-11-14
2006-11-14
Rachuba, M. (Department: 3723)
Abrading
Abrading process
Utilizing fluent abradant
C451S037000, C451S056000
Reexamination Certificate
active
07134939
ABSTRACT:
The invention is about reducing friction and wear and risk of seizure of mechanically interacting lubricated surfaces. A working surface of a mechanical piece engaged with another piece in relative sliding movement is processed for reduced friction. Two distinctly separate zones are allocated on the surface, one attractive to a lubricant used and the other repelling to the lubricant. The repellency may be conveyed to the repelling zone by either a mechanical modifying process or by a chemical change. In a preferred embodiment of the invention the repellency is obtained by lapping. The lubricant attractive layers are associated in a preferred embodiment of the invention with an assembly of recessed microstructures.
REFERENCES:
patent: 4036906 (1977-07-01), Finelli
patent: 5591068 (1997-01-01), Taylor
patent: 2003/0003857 (2003-01-01), Shimagaki et al.
patent: 2004/0116058 (2004-06-01), Meissner
patent: 2005/0101232 (2005-05-01), Meissner
Ignatovsky Alexander
Shamshidov Boris
Fricso Ltd.
Friedman Mark M.
Rachuba M.
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