Chip resistance tire

The invention relates to chip resistant pneumatic tires, especially off-the-road (OTR) tires and heavy duty off-the-road tires having typically 1 to 36 carcass plies and 6 belts (in a radial ply tire) or 4 breakers (in a bias ply tire), and one to four sets of beads. A chip resistant pneumatic tire...

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Bibliographic Details
Main Authors Malin, Jerry, Agarwal, Subhash Chander, Roon, Michael John, Wells, Dale Eugene
Format Patent
LanguageEnglish
Published 21.10.2003
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Summary:The invention relates to chip resistant pneumatic tires, especially off-the-road (OTR) tires and heavy duty off-the-road tires having typically 1 to 36 carcass plies and 6 belts (in a radial ply tire) or 4 breakers (in a bias ply tire), and one to four sets of beads. A chip resistant pneumatic tire () is provided. The tire has an original reinforced rubber sheet () embedded in or under its tread () and/or sidewall (), and is used in off the road applications such as mining. Low sulfur rubber () is used to coat the organic reinforcement (), and its shown that such rubber () is more compatible with rubber used to form the tread () or sidewall (), which together with the organic reinforcement (), helps prevent chipping and chunking in the tread () and sidewall (). The illustrated organic filaments of cords () have a round cross section and are at least 2000 denier (2200 dTex) and have a tenacity of at least 3.5 g/denier (31 cN/Tex), an initial modulus of at least 20 g/denier (177 cN/Tex), an elongation at break of at least 10%, and a shrinkage of at most 10%.