Resilient tires and wheels – Tires – resilient – Patches
Patent
1980-06-10
1981-12-29
Kittle, John E.
Resilient tires and wheels
Tires, resilient
Patches
152361R, 152361FP, B60C 918
Patent
active
043077676
ABSTRACT:
A pneumatic tire for motor vehicles having a generally trapezoidal section with a top portion which is generally convex towards the outside and wider than any other part of the tire, beads, and two sidewalls. The sidewalls spread outwardly from the beads to zones which connect the sidewalls with the top portion. The top portion has a central tread portion which is normally in contact with the ground when the tire is under load, and lateral shoulders which are spaced from the ground during rectilinear running of the vehicle. The sidewalls have zones which are less resistant to bending adjacent to the shoulders and adjacent to the beads than the parts which are intermediate the shoulders and beads. The less resistant zones act as hinges under load on the tread. A generally annular reinforcing structure for the tread, which is substantially inextensible in the axial and circumferential direction, is folded at its ends about reinforcing annular straps arranged in each shoulder. In any radial section, the cincture connection angle, which is the angle between a straight line drawn through the center of the hinge adjacent to each shoulder and parallel to the tire axis and a straight line drawn through the center of the shoulder hinge and the center of the strap, is between -10.degree. and 30.degree..
REFERENCES:
patent: 3708007 (1973-01-01), Roberts
patent: 3805868 (1974-04-01), Tangorra
patent: 3831657 (1974-08-01), Dillenschneider
patent: 3840060 (1974-10-01), Tangorra
patent: 3870095 (1975-03-01), Tangorra
Industrie Pirelli S.p.A.
Kittle John E.
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