Automobile pneumatic tires including rubber reinforcing plies which take on a supporting function with a deflated tire

US6688357B1 · kind B1 · utility

Assignee

• Dunlop GmbH · GB

Inventors

• Manfred Gerresheim · Würselen, DE
• Karlheinz Baumann · Roth, DE
• Gunter Dietrich · Frankfurt, DE

Key dates

• Filing date: Aug 7, 2001
• Grant date: Feb 10, 2004
• Expiry date: Aug 7, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T152/10846
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

An automobile pneumatic tire comprises a multiple ply carcass extending in-between two bead rings having allocated bead fillers, a belt arrangement between the plies of the carcass and a tread strip, and rubber reinforcement plies in the sidewall sections assuming a supporting function where the tire is deflated. A first rubber reinforcement ply is inside a first ply of the carcass, a second rubber reinforcement ply is between the first ply of the carcass and the second ply of the carcass and a third rubber reinforcement ply is between the second ply of the carcass and a third ply of the carcass. The three rubber reinforcement plies extend down with their ends staggered in relation to each other from the bead core area to the edge area of the belt ply. The three rubber plies have different heights in radial direction and different thickness over the height of the sidewall.