Method of manufacturing tire with turned down ply construction
US7670449B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 22, 2005 |
| Grant date | Mar 2, 2010 |
| Priority date | — |
| Expiry date | Mar 10, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29D30/32
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of producing a tire having an outside-in ply construction is provided. The method includes the steps of: providing a tire building drum; laying an inner liner on said drum, applying a first layer of ply on the right hand side of the drum so that a first end of the first ply layer is located over a first bead area while the second end of the first ply layer extends laterally outwards therefrom, applying a first bead over the first bead area and ply end; applying a second layer of ply on the left hand side of the drum so that one end of the second ply layer is located over a second bead area, while the second end extends laterally outwards therefrom; applying a second bead over the second toeguard and end of second ply layer; folding the second end of the first layer of ply over the first bead until the second end of the first layer of ply contacts the second bead; folding the second layer of ply over the second bead and apex so that the outer end of the second layer of ply is located over the first bead; and shaping the carcass into a toroid. A second method of building a tire carcass comprising the steps outlined above, with an additional third layer of ply being added tha…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.