Low-friction sliding mechanism

Details Low-friction sliding mechanism Low-friction sliding mechanism

2005-11-29

2005-11-29

Footland, Lenard A. (Department: 3682)

Bearings

Linear bearing

Lubricating

C384S013000, C384S042000, C384S129000, C384S297000, C384S322000, C384S907100

Reexamination Certificate

active

06969198

ABSTRACT:
A low-friction sliding mechanism includes first and second sliding members having respective sliding surfaces slidable relative to each other and a lubricant applied to the sliding surfaces of the first and second sliding members. At least the sliding surface of the first sliding member is made of a diamond-like carbon material, and at least the sliding surface of the second sliding member is made of either an aluminum-based alloy material, a magnesium-based alloy material or a diamond-like carbon material. The lubricant contains a base oil and at least one of an ashless fatty-ester friction modifier and an ashless aliphatic-amine friction modifier.

REFERENCES:
patent: 5840662 (1998-11-01), Nibert et al.
patent: 2003/0108777 (2003-06-01), Gunsel et al.
Kano et al., “Friction Characteristics of a Hard Carbon Film in Engine Oil, (No. 2) (Surface Analysis Result of Sliding Surface),” Japan Tribology Congress 1999, 5, pp. 11-12.
M. Kano et al. “The Effect of ZDDP and MODTC Additives on Friction Properties of DLC and Steel CAM Follower in Engine Oil”, Abstracts of Papers, 2ndWorld Tribology Congress, Sep. 3-7, 2001, 9, p. 342.
Japanese Industrial Standard, “High Carbon Chromium Bearing Steels”, JIS G 4805, 1999, pp. 1-31.
Japanese Industrial Standard, “Aluminium Alloy Castings”, JIS H 5202, 1999, pp. 1-17.
“Standard Practice for Codification of Certain Nonferrous Metals and Alloys, Cast and Wrought1”, ASTM International, Designation: B 275-02, Jun. 2002, pp. 1-7.
“Standard Test Method for Separation of Representative Aromatics and Nonaromatics Fractions of High-Boiling Oils by Elution Chromatography1”, ASTM, Designation: D 2549-91, (Reapproved 1995), pp. 895-900.
International Standard, “Petroleum Products—Determination of Base Number—Perchloric Acid Potentiometric Titration Method”, ISO 3771, Aug. 15, 1994 second edition, pp. 1-8.

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