Charles E Drvol

US Patent:

20030188818, Oct 9, 2003

Filed:

Apr 9, 2002

Appl. No.:

10/119410

Inventors:

Charles Drvol - Tallmadge OH, US
Shahir Azer - Fairlawn OH, US
Marc Henoumont - Habay-la-Neuve, BE
Michael Rodgers - Copley OH, US

International Classification:

B60C001/00
B60C009/02
B60C009/18
B60C009/00

US Classification:

152/564000, 152/537000, 428/465000, 428/295400, 428/382000

Abstract:

This invention relates to an unvulcanized rubber tire which has at least one wire reinforced rubber component which contains wire reinforcement encapsulated with an unvulcanized rubber composition comprised of natural cis 1,4-polyisoprene rubber, and liquid polyisoprene polymer. The said encapsulation rubber composition of the tire component is then sulfur cured together with the curing of the tire itself. Such tire component may be, for example, a carcass ply and/or belt ply.

US Patent:

20030004262, Jan 2, 2003

Filed:

Apr 5, 2002

Appl. No.:

10/116897

Inventors:

Charles Drvol - Tallmadge OH, US
Sherman Taylor - North Canton OH, US
Tom Linster - Gilsdorf, LU
Michael Rodgers - Copley OH, US
Fahri Ozel - Eischen, LU

International Classification:

C08F008/34

US Classification:

524/525000, 525/333900

Abstract:

A tire is provided having a circumferential tread of a cis 1,4-polyisoprene rubber based rubber composition reinforced with a carbon black/silica composite, wherein said carbon black/silica composite is a treated carbon black having silicon-containing domains, namely domains of silica, primarily on the surface of the carbon black, where said silica domains contain hydroxyl groups on their surface, wherein said silica domains cover at least 50 percent of the carbon black surface, and where said rubber composition contains a coupling agent as bis (3-triethoxysilylpropyl) polysulfide having an average of from 2 to 2.6 connecting sulfur atoms in its polysulfidic bridge, exclusive of a bis (3-trialkoxysilylalkyl) polysulfide having an average of greater than 2.6 sulfur atoms in its polysulfidic bridge; wherein said rubber composition contains from zero to a maximum of about 15 phr of unmodified carbon black and wherein said rubber composition contains from zero to a maximum of about 10 phr of precipitated silica and exclusive of any other carbon black and exclusive of any other silica.