Resilient tires and wheels – Tires – resilient – Patches
Patent
1980-09-12
1982-07-13
Kittle, John E.
Resilient tires and wheels
Tires, resilient
Patches
152362R, 156133, 156123, B60C 910, B29H 1714
Patent
active
043389899
ABSTRACT:
A pneumatic tire having spaced beads and a pair of biased inner plies tied to each bead, upon which is placed a third ply disposed at a greater angle to the equatorial plane than the underlying bias plies, resulting in the outermost ply cords being "loose" in comparison to the innermost ply cords being "tight" after the tire shaping operation. The cords of the outermost ply assume a shorter effective length along with an increase in their twist (tpi) in the inflated shaped vulcanized tire than the length and twist as laid down on the building drum. A further proviso is that the cords of the third ply shall be at some degree of compression greater than as laid down on the building machine, with said compression being the maximum attainable by the cords as a consequence of the bias cords pantographing during the shaping of the tire. This building block of two plies of cords at higher tension combined with a ply of cord at lower tension results in a new and unusual tire of unexpected structure and performance characteristics.
REFERENCES:
patent: 3160192 (1964-12-01), Drew
patent: 3386486 (1968-06-01), Kovac et al.
patent: 3581793 (1971-06-01), Wittneben
patent: 3612135 (1971-10-01), Wittneben
patent: 3672423 (1972-06-01), Duduk
patent: 3682217 (1972-08-01), Marzocchi
patent: 3780782 (1973-12-01), Jennings et al.
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