US 2018/0178585 A1 · TIRE PLY JOINT CONFIGURATION

Abstract

A method of forming a layer of tire ply is disclosed. A first strip of ply is provided having a plurality of evenly spaced reinforcement cords, having a spacing S, and having a lateral end, wherein the last cord is spaced apart from strip end a distance X, wherein X is not equal to S. A second strip of ply is provided having a plurality of evenly spaced reinforcement cords, having a spacing S, and having a lateral end, wherein the last cord is spaced apart from strip end a distance Y, wherein Y is not equal to S. The lateral ends of the first and second strip are joined together in a lap joint. The first and second lateral ends are overlapped so that the spacing X preferrably does not overlap, but may partially overlap with the spacing Y.

Claims21

Dependent claims

A method of forming a layer of tire ply comprising the following steps:

a. providing a first strip of ply having a plurality of evenly spaced reinforcement cords with a spacing S, and having a lateral end, wherein there is a distance X between the end of the first strip of ply and a reinforcement cord nearest the lateral end, wherein X is not equal to S;
b. providing a second strip of ply having a plurality of evenly spaced reinforcement cords having a spacing S, wherein there is a distance Y between the end of the second strip of ply and a reinforcement cord nearest the lateral end, wherein Y is not equal to S;
and
c. joining the first and second lateral ends to form an overlapped portion, wherein only a single cord of the first strip overlaps with a single cord of the second strip.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

15/902,576Filed 22 Feb 2018

Priority

31 Aug 2015

Published

28 Jun 2018

Term ends

Not estimatedThe source records don’t support an estimate.

Classification12 codes

B60C 9/04
Carcasses: the reinforcing cords of each carcass ply arranged in a substantially parallel relationship
B29D 30/3042
Applying the layers; Guiding or stretching the layers during application: by feeding cut-to-length pieces in a direction perpendicular to the drum…
B29D 30/305
Applying the layers; Guiding or stretching the layers during application: by feeding cut-to-length pieces in a direction parallel to the drum axis…
B29D 30/42
Textile inserts, e.g. cord or canvas layers, for tyres ; Treatment of inserts prior to building the tyre: endless textile bands without bead-rings

Tire ply joint configuration

Life of this patent

Tire ply joint configuration

Life of this patent

Abstract

Claims21