Flat pneumatic radial tire

Abstract

Abstract PURPOSE:To improve durability at the time of traveling at an ultra-high speed by forming the reinforcing layer of a belt with a polytetra-methylene-adipamide and forming it in a composite construction consisting of a central area having a specified width with respect to the width of a main layer and both side areas made of polyamide. CONSTITUTION:The captioned tire consists of a pair of side parts 1, a tread part 2 which is spread between both side parts 1, a radial cord ply carcass 3 which reinforces the framework of a case main body consisting of these parts 1, 2, and a belt 4 arranged between the carcass 3 and the tread part 2 and consisting of a main layer 5 and a reinforcing layer 6. In this construction, the reinforcing layer 6 consists of a cap ply of composite construction consisting of a 4.6 nylon cord spread over a center area 6-1 having width (w) corresponding to 40-75% of the width W of the main layer 5, and 6 or 66 nylon cord for remaining both side areas 6-2.

Inventors

• 👤 Misao Kawabata
• 👤 川端　操
• 👤 Toshio Sugawara
• 👤 菅原　利雄
• 👤 Isamu Imai
• 👤 今井　勇

Bibliographic Details