Tyre having asymmetrical self-supporting sidewalls
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United States of America Patent
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Apr 27, 2010
Grant Date -
Jan 18, 2007
app pub date -
Jun 30, 2006
filing date -
Dec 30, 2003
priority date (Note) -
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Abstract
A tire suitable for extended-mobility travel includes sidewalls reinforced by a sidewall insert, namely an inner insert in the inner sidewall, and an outer insert in the outer sidewall. The inserts are made of rubber composition enabling the sidewalls to bear a load corresponding to part of the weight of the vehicle in a situation in which the inflation pressure is substantially reduced or zero. The inner sidewall, and more particularly the insert of this inner sidewall, has a substantially higher modulus of extension than the outer sidewall (and more particularly than the insert of this outer sidewall). The outer insert is subdivided into at least two zones; the inner insert can comprise one or more zones, but always fewer than the number of zones of the outer insert.
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