Resilient tires and wheels – Tires – resilient – Pneumatic tire or inner tube
Patent
1991-02-21
1992-06-30
Ball, Michael W.
Resilient tires and wheels
Tires, resilient
Pneumatic tire or inner tube
1523795, B60C 15024
Patent
active
051254468
ABSTRACT:
A reverse bead type tire includes a tread, two sidewalls extending from the tread and a bead formed on an adge of each of the sidewalls. Each bead has a bead wire embedded therein and has a contact face which seats on a substantially axially extending seat of a wheel rim. The bead further has a bearing surface seated on a substantially radially inwardly projecting flange which forms an extension of the seat. The bead is configured with surface discontinuities such that a surface area of actual contact of the bead on the seat is less than a surface area of the seat between the flange and a plane P perpendicular to the rotational axis of the wheel and tangent to an axially inside point of the bead wire. As a result, localized pressures at the area of actual contact are high so that tightness of the tire on the wheel is assured. On the other hand, such tightness produced by localized high pressures does not increase mounting difficulty of the tire on the wheel rim.
REFERENCES:
patent: 1915963 (1933-06-01), Wait
patent: 4732198 (1988-03-01), Frerichs et al.
patent: 4961453 (1990-10-01), Durif
Patent Abstracts of Japan, vol. 8, No. 280 (M-347) [1717], 21 Dec. 1984; & P-A-59 149 802 (Sumitomo Gomu Kogyo K.K.) Aug. 27, 1984.
Ball Michael W.
Compagnie Generale des Establissements Michelin--Michelin & Cie
Krawczyk Nancy T.
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