Tire having circumferential cables for anchoring the carcass and process of preparing such cables
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United States of America Patent
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-
Jul 25, 2000
Issued Date -
N/A
app pub date -
May 16, 1997
filing date -
Jun 29, 1995
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The anchoring of the carcass reinforcing elements 1 is assured by circumferential cables 2, with the interposition of a connecting rubber composition 3. The circumferential cable 2 is arranged in several turns forming one or more helices. These circumferential cables have an operational elongation rate A.sub.f =A.sub.e +A.sub.p of more than 4%. This operational elongation rate does not include the specific elongation A.sub.s of the 'cable' effect. The maximum stress R.sub.m of the cable 2 is preferably more than 2000 MPa. The cables have undergone a heat treatment which has, in combination, the features of being a recovery annealing treatment and which is carried out directly on cable comprising wires previously separately covered by an adherent coating.
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