Tire with asymmetrical profile and symmetrical carcass passage
AssigneeCompagnie Generale Des Etablissements Michelin
InventorBRUNO GUIMARD
Life of this patent
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Abstract
A tire (10) comprises first and second beads (321, 322) comprising circumferential reinforcing elements (331, 332) for anchoring the carcass layer (36) arranged substantially symmetrically relative to the median plane (M) of the rim. The tire has axial distances C11, C21, at the equator (E), between the median plane (M) of the rim and the carcass layer (36) which passes into the first and second sidewalls (301, 302). The tire has axial distances F1, F2, at the equator (E), between the median plane (M) of the rim and the theoretical external surface of the first and second sidewalls (301, 302). 2×F1>LN with LN being the nominal axial width of the tire according to the ETRTO Standards Manual 2021. |C11−C21|≤3.0 mm and F1−C11>F2−C21. G1≤6.0 mm and/or G2≤6.0 mm.
Claims16
-15. (canceled)
A tire for a passenger vehicle, the tire having an outer side and an inner side which are imposed when the tire is mounted on the passenger vehicle, the tire comprising:
- a crown comprising a crown reinforcement;
- first and second beads;
- first and second sidewalls which connect each first and second bead to the crown, respectively;
- a carcass reinforcement comprising at least one carcass layer, the at least one carcass layer being anchored in each first and second bead and extending radially in each first and second sidewall and axially in the crown radially internally with respect to the crown reinforcement;
- a median plane of a rim which is constituted by the median plane of a measurement rim of the tire according to ETRTO Standards Manual 2021 when the tire is mounted on the measurement rim, the first sidewall and the first bead being arranged at a same side of the median plane of the rim as the outer side of the tire, the second sidewall and the second bead being arranged at a same side of the median plane of the rim as the inner side of the tire, each first and second bead comprising at least first and second circumferential reinforcing elements for anchoring the at least one carcass layer, respectively, the first and second circumferential reinforcing elements being arranged substantially symmetrically relative to the median plane of the rim,
- wherein the tire has an axial distance C1i, at an equator, between the median plane of the rim and a first axially outermost point of the at least one carcass layer which passes into the first sidewall,
- wherein the tire has an axial distance C2i, at the equator, between the median plane of the rim and a second axially outermost point of the at least one carcass layer which passes into the second sidewall,
- wherein the tire has an axial distance F1, at the equator, between the median plane of the rim and a first point of a theoretical external surface of the first sidewall,
- wherein the tire has an axial distance F2, at the equator, between the median plane of the rim and a second point of a theoretical external surface of the second sidewall,
- wherein the tire has an axial thickness G1, at the equator, between a point of a theoretical internal surface of an internal cavity of the tire and a first axially innermost point of the at least one carcass layer which is axially innermost with respect to the equator passing into the first sidewall,
- wherein the tire having an axial thickness G2, at the equator, between a point of the theoretical internal surface of the internal cavity of the tire and a second axially innermost point of the at least one carcass layer which is axially innermost with respect to the equator passing into the second sidewall,
- wherein 2×F1>LN with LN being a nominal axial width of the tire according to the ETRTO Standards Manual 2021,
- wherein |C1i−C2i|≤3.0 mm,
- wherein F1−C1i>F2−C2i, and
- wherein G1≤6.0 mm and/or G2≤6.0 mm.
Dependencies are inferred from the claim text.