Vehicle tyre

Cord (11) in the breaker layer reinforcing band (4) is twisted around itself in such a way that the number of twists in the crown area of the tire is greater than at the edges of the breaker layers (3). An Independent claim is made for equipment for placing a cord reinforcing band (4) onto a tire br...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: GLINZ, MICHAEL
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:Cord (11) in the breaker layer reinforcing band (4) is twisted around itself in such a way that the number of twists in the crown area of the tire is greater than at the edges of the breaker layers (3). An Independent claim is made for equipment for placing a cord reinforcing band (4) onto a tire breaker layer which includes a cord guide in front of the building drum, a spool from which cord is unwound and a cord twisting head controlled by an electronic unit. Preferred Features: The number of twists per unit length of cord (11) in the crown is 1.2-1.5 times the number at the edges of the breaker layer (3). Twist is constant in the middle third area between the edges of the broadest breaker layer. In the outer thirds the degree of twist becomes increasingly smaller. Cord spacing at the edges of the breaker layer is less than in the tire crown.