PNEUMATIC TYRE HAVING A MORE LIGHTWEIGHT CROWN REINFORCEMENT

The invention relates to a tyre comprising a crown reinforcement (4) formed of at least two working crown layers (42, 43) of reinforcing elements, the reinforcing elements of the radially outermost working crown layer (43) being distributed at a spacing P, and of at least one protective layer (44)....

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Bibliographische Detailangaben
Hauptverfasser:	DEGEORGES, Agnès, LARDJANE, Aurore
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	DEVICES OR ARRANGEMENTS RELATED TO TYRES PERFORMING OPERATIONS REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIESIN GENERAL TRANSPORTING TYRE CHANGING OR REPAIRING TYRE INFLATION VEHICLE TYRES VEHICLES IN GENERAL
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Beschreibung
Zusammenfassung:	The invention relates to a tyre comprising a crown reinforcement (4) formed of at least two working crown layers (42, 43) of reinforcing elements, the reinforcing elements of the radially outermost working crown layer (43) being distributed at a spacing P, and of at least one protective layer (44). According to the invention, the reinforcing elements of the working crown layers are metal cords of a diameter of less than 1.3 mm, at least one thread of each metal cord of at least one working crown layer is of at least UHT grade, the ratio Ei/P is strictly greater than 0.23 and the ratio E2/P is strictly greater than 0.30.