RADIAL TIRE AND ASSEMBLY OF RADIAL TIRE AND RIM

WIPO Patent Application WO/1987/006891

A1

A radial tire (1) comprises a pair of bead parts (2) having a bead core (3) and a bead apex (5), a carcass (4) both ends of which being wound around said bead core to be fixed, a tread part (6), and belt layers (7); and has an aspect ratio of not more than 60 %. Said tread part has a width in an axial direction of tire (TW) exceeding a maximum width of the carcass (L), moreover, the end part thereof (P) being located within a range of 100 ~ 50 % of the height (h) of the section of said carcass. Thus even when the internal pressure of a tire drops, rigidity of the side part of a tire and deformation of the tread part make it possible to support the weight of a car, allowing a safe running to be continued. In the assembly of the radial tire and the rim, a toe part (9) extending toward the inside in the radial direction of the tire and a hump groove (10) are formed in the bead part of said radial tire, while a ring-shaped groove (22) and a hump (23) are provided in the rim (20) to be fitted to the aforesaid toe part and hump groove. Accordingly, dislocation of the bead part from the rim can be prevented on a drop in internal pressure or at an abrupt cornering.

NOMA HIROYUKI (JP)
SAITOU SANETO (JP)

PCT/JP1987/000298

November 19, 1987

May 11, 1987

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SUMITOMO RUBBER IND (JP)

B60C3/00; B60C9/08; B60C9/18; B60C11/00; B60C15/00; B60C15/02; B60C15/06; B60C17/00; B60C17/08; (IPC1-7): B60C9/08; B60C9/18; B60C15/02; B60C15/06; B60C17/08

JPH04992705A
JPH04992704A
JPH05529650A
JPH05526004B
JPH05243204A	1993-09-21
JPH05522282B
JPS56120406A	1981-09-21
JPS59179405A	1984-10-12
JPS538405B2	1978-03-28
JPH05744482B
JPS57142605U	1982-09-07
JPH05715007B
JPS58112810A	1983-07-05

See also references of EP 0273056A4

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