Tire bead toe with slits

Details Tire bead toe with slits Tire bead toe with slits

1987-07-16

1989-02-21

Ball, Michael

Resilient tires and wheels

Tires, resilient

Pneumatic tire or inner tube

1523795, B60C 1502, B60C 516

Patent

active

048056820

ABSTRACT:
A tire comprising a tread portion, sidewalls and a pair of spaced-apart beads each containing a substantially enextensible annular bead core, having bead seats and an extended toe portion comprising elastomeric material extending axially and radially inwards of the bead, the toe being of a rigidity in the direction of its length so that in use of the tire on a wheel rim having a groove complementary to the toe and engaging the toe when an axially inward force is applied to the tread portion a radially and axially outwardly directed force is generated at the bead core to affect bead retention characterized by the toe being subdivided in the circumferential direction of the tire by a series of substantially radial cuts in the toe such that circumferentially adjacent portions of the toe are decoupled from one another and dislodgement or misplacement of one of said portions does not dislodge or displace an adjacent portion. Preferably the cuts are equally spaced around the tire and they are through the whole cross section of the toe.

REFERENCES:
patent: 4148348 (1979-04-01), French et al.
patent: 4209051 (1980-06-01), Udall

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