Tire having silica reinforced rubber tread with outer cap contai

Details Tire having silica reinforced rubber tread with outer cap contai Tire having silica reinforced rubber tread with outer cap contai

1995-03-07

2000-04-04

Knable, Geoffrey L.

Resilient tires and wheels

Tires, resilient

With electrical conducting means

1522095, 152DIG2, B60C 1908

Patent

active

060448822

ABSTRACT:
The invention relates to a rubber tire composed of carbon black reinforced rubber carcass and having a rubber tread which is quantitatively reinforced with silica and which, in turn, has a thin, integral, rubber outer cap on its outer surface which contains a quantitative amount of carbon black. In one aspect, said outer cap, sometimes referred to herein as an outer top cap, extends across the outer surface of the tread which is normally intended to be ground contacting and in an alternative aspect, the outer top cap extends only over the outer portion, namely the peripheral edges, of said tread surface intended to be ground contacting. The outer, carbon black reinforced, rubber tread top cap connects with at least one other carbon black reinforced rubber component of the tire in a manner to provide a path of reduced electrical resistance from said outer tread top cap to the bead portion of the tire carcass and, therefore, such a path from the vehicle to the road surface.

REFERENCES:
patent: 2339546 (1944-01-01), Hanson
patent: 3768537 (1973-10-01), Hess et al.
patent: 3814160 (1974-06-01), Creasey
patent: 4007069 (1977-02-01), Takayanagi et al.
patent: 5066721 (1991-11-01), Hamada et al.
patent: 5447971 (1995-09-01), Bergh et al.
patent: 5518055 (1996-05-01), Teeple et al.

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