Title:
TIRE, THE SIDEWALL OF WHICH COMPRISES RIBS
Document Type and Number:
WIPO Patent Application WO/2019/102151
Kind Code:
A3
Abstract:
The invention relates to a tire (1) having a carcass reinforcement (2) topped by a crown reinforcement (3) which itself is topped by a tread (7), said tread being connected to two beads (6) via two sidewalls (4), each sidewall having an outer surface (40), at least one of said sidewalls comprising at least two circumferential projections (5a, 5b, 5c), each sidewall (4) comprising an equator point (E) situated on the outer surface of the sidewall and radially at the same position than the axially outermost point (20) of the carcass reinforcement (2) in a non-loaded configuration. Each circumferential projection (5a, 5b, 5c) is delimited by a radially upper wall (51), a radially lower wall (52) and a connecting wall (53) situated between the radially upper wall (51) and the radially lower wall (52). Each circumferential projection is characterized in that: the connecting wall (53) is substantially parallel to the carcass reinforcement when viewed axially relative to said connecting wall (53); the radially upper wall (51) has a substantially frustoconical shape; the height (H) of each circumferential projection (5a, 5b, 5c), which is measured according to a direction substantially perpendicular to the carcass reinforcement (2) from said outer surface (40), is more than at least 0.8 times the total thickness (T) of the sidewall measured at the equator (E) and 4 mm and is inferior to at most 1.6 times the total thickness (T) and 8 mm; in the meridian plane at the center of the contact region of the tire in a deployed configuration, the angle (α), which is formed by the radially exterior wall (51) with the radial direction, is larger than 95° for the radially outermost projection (5a); the innermost radial position of the connecting wall (53) of the radially innermost projection (5c) is situated radially outside of the equator point (E).
Inventors:
LICENSE WILLIAM (FR)
BABAUD JACQUES (FR)
BABAUD JACQUES (FR)
Application Number:
PCT/FR2018/052952
Publication Date:
July 25, 2019
Filing Date:
November 22, 2018
Export Citation:
Assignee:
MICHELIN & CIE (FR)
International Classes:
B60C1/00; B60C13/00; B60C13/02
Foreign References:
| JP2003011620A | 2003-01-15 | |||
| US20010017178A1 | 2001-08-30 | |||
| JP2011084144A | 2011-04-28 | |||
| JP2014118062A | 2014-06-30 |
Attorney, Agent or Firm:
LASSON, Cédric (FR)
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