Insert for non-pneumatic tires

Details Insert for non-pneumatic tires Insert for non-pneumatic tires

1980-05-09

1982-01-12

Ball, Michael W.

Resilient tires and wheels

Tires, resilient

Cushion

152400, B60C 712

Patent

active

043100422

ABSTRACT:
A monolithic non-pneumatic urethane tire for use on a wheel rim of the type having a pair of laterally spaced bead flanges formed with wheel rim side walls which extend upwardly from the bottom of the wheel rim is improved by providing a tire body with certain structural features and locating a tubular insert inside the tire body. The tire body has a circumferentially extending tunnel on its inside and includes side walls which converge outwardly to a thickened portion. The thickened portion forms a bead shoulder that seats on top of the bead flanges of the wheel rim and also includes a bead which extends downwardly into the wheel rim adjacent the side walls of the wheel rim. The tubular insert is a semiresilient hollow tube mounted within the tunnel of the tire body to maintain the bead portion of the tire body against the side walls of the wheel rim. The tube is resilient against deflection along a line passing through both of the beads but is capable of being distorted along a line passing through the tire body toward the center of the wheel rim.

REFERENCES:
patent: 365091 (1887-06-01), Owen
patent: 862785 (1907-08-01), Andrew
patent: 917734 (1909-04-01), Kempshall
patent: 1042941 (1912-10-01), McCormack
patent: 1335115 (1920-03-01), Huffman
Rubber World, Jun. 1977, Reprint, "Urethane Bicycle Tire Combines Flatproof, Pneumatic Qualities".

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