Radial ply pneumatic tire

US5639320A · kind A · utility

Inventors

• Thomas Reed Oare · Suffield, US
• Randall Raymond Brayer · North Canton, US
• Jeffrey W. Kahrs · Hartville, US
• Beale A. Robinson · North Canton, US
• Keith Carl Trares · Akron, US
• Raymond Dean Mc Quate · Wadsworth, US

Key dates

• Filing date: May 6, 1994
• Grant date: Jun 17, 1997
• Expiry date: May 6, 2014

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T152/10864
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A radial ply pneumatic tire is described. The tire has a carcass with a bead portion, a carcass reinforcing structure, and a bead filler. The carcass reinforcing structure has at least two plies. The turnup ends of a first and second ply are wrapped about each bead. The turnup end of one of the plies terminates in radial proximity of the maximum section width of the tire. In a preferred embodiment of the invention, the tire carcass includes elastomeric first and second fillers the first filler being located between the first ply and the innerliner of the tire, and the second filler being located between the first and second ply. The fillers stiffen the sidewalls to permit the tire to be driven while uninflated. The tire may further include an aramid overlay radially outwardly of the reinforcing belt.