TIRE WITH OPTIMIZED CROWN AND TREAD
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United States of America Patent
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Issued Date -
Apr 23, 2020
app pub date -
Apr 25, 2018
filing date -
May 11, 2017
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Abstract
Tires comprising a hoop reinforcement (5) and 2 crossed working layers (41, 42) in which the breaking strength RC of each working layer (41, 42) is at least equal to 30 000 N/dm have improved endurance. The working layers comprise reinforcing elements made up of individual metal threads or monofilaments having a cross section at least equal to 0.20 mm and at most equal to 0.5 mm. The density of reinforcing elements in each working layer is at least equal to 100 threads per dm and at most equal to 200 threads per dm. The tire also comprises axially exterior cuts (25). At least one of the two axially exterior portions of the tread comprises a rubbery material having a Shore hardness at least equal to 48 and at most equal to 60.
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