Lubricants for run-flat tire systems

Details Lubricants for run-flat tire systems Lubricants for run-flat tire systems

2006-05-09

2006-05-09

Aftergut, Jeff H. (Department: 1733)

Resilient tires and wheels

Tires, resilient

Pneumatic tire or inner tube

C152S520000, C152S521000

Reexamination Certificate

active

07040367

ABSTRACT:
A lubricant for a run-flat tire system includes a water soluble, or water-miscible carrier, a thickener, and a surfactant. The thickener hereof retains its rheological properties and is not subject to permanent thinning shear. The base fluid is, preferably, a water-soluble polyhydroxyl or other polyhydric compound and the thickener is preferably a clay. When admixed with a surfactant and, optionally, a lubricity agent, the lubricant exhibits long term stability and (is resistant to heat buildup.) prevents the buildup of heat in the tire assembly when the tire is in the run flat condition.

REFERENCES:
patent: 3954638 (1976-05-01), Jones et al.
patent: 4607675 (1986-08-01), Patitsas et al.
patent: 4784795 (1988-11-01), Fahl
patent: 6124248 (2000-09-01), O'Bryant et al.
patent: 6664219 (2003-12-01), Lentsch et al.
patent: 3914887 (1980-11-01), None
patent: 210356 (1987-02-01), None
patent: GB 2088898 (1982-06-01), None
patent: 7902120 (1980-09-01), None

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