FR2425334A1
Expired / Lapsed
FR
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Sub-tread reinforcement of run-flat pneumatic tyres - using rubber supported hoop plies for a high lateral tread stiffness wt. ratio
Assignee: Pneumatiques Caoutchouc Manufacture et Plastiques Kleber Colombes SA
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Filing: 1978-05-11
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Granted: —
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Expires: 1998-05-11
Abstract
Abstract Tyres having rubber-reinforced sidewalls for support if used deflated are provided with relatively inextensible subtread reinforcement plies sepd. or supported by a relatively thick hoop of rubber. The rubber hoop inhibits concave buckling of the tread zone when rolling at reduced pressure. Pref. the tyres are moulded with the sidewalls slightly sprayed so that, when mounted on a car wheel, the sidewall supports are precompressed for entrained stiffness. The structures have a relatively high stiffness/wt. ratio for the tread crown when hot supported pneumatically.
Inventors
- 👤 Alphonse Deck
- 👤 Claude Lefaucheur
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-23 23:04
CPC Classifications
B; B60; B60C; B60C13/00; B60C15/00; B60C15/02; B60C17/00; B60C9/00; B60C9/18; B60C9/26; B60C2017/0081
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