Pneumatic tire having a single carcass ply reinforced with metallic cords, a high ending ply, turnup and locked bead construction
US5779829A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 24, 1995 |
| Grant date | Jul 14, 1998 |
| Priority date | — |
| Expiry date | Aug 24, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T152/10855
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The pneumatic tire has a single carcass ply reinforced with parallel metallic cords, each cord composed of at least one filament having a tensile strength of at least (-2000.times.D+4400 MPa).times.95%, where D is the filament diameter in millimeters. The turnup portion of the single carcass ply 12 in the bead portion of a pneumatic tire is interposed between the bead core 11 and a toe guard 18, and the radially outer edge of each turnup portion being in contact with the main portion of the carcass ply and extending to an end point 0.5 to 4.0 inches (12.7 to 101.6 mm) radially outward of the bead core. The toe guard 18 has a first and second end and each end is disposed directly adjacent to the carcass ply. The first end 18a of the toe guard is located on the axially inner side of the main portion of the carcass ply at a location about 0.4 to 3.5 inches (10 to 89 mm) radially outward of the bead core and the second end 18b is located at a point ranging from substantially the axially outermost point of the bead core 11 to a location about 3.5 inches (89 mm) radially outward of the bead core. The first end 18a and second end 18b of the toe guard is a shorter distance from the bead co…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.