Pneumatic tire and method of manufacturing the same
AssigneesThe Yokohama Rubber Co., Ltd., Honda Giken Kogyo Kabushiki Kaisha
InventorEiji Saito
Life of this patent
Estimating the term…
Abstract
A pneumatic tire having a puncture preventive layer formed by windingly sticking a tube having seal material wrapped therein to the tire inner surface circumferentially of the tire and continuously and spirally with its side surfaces closely contacted each other: or a pneumatic tire having a puncture preventive layer formed by sticking micro balloons having seal material wrapped therein to the tire inner surface with their sides closely contacted with each other.
Claims10
(canceled)
A pneumatic tire comprising:
- a puncture preventive layer on a tire inner surface, the puncture preventive layer being micro balloons filled with a seal material,
- wherein one of the micro balloons contacts another of the micro balloons,
- wherein the seal material is from the group comprising butyl rubber, polyisobutylene, natural rubber, isoprene rubber, polybutene, and rubber latex, and
- wherein for each of said micro balloons, the inner diameter is not less than 2 mm, the outer diameter not more than 6 mm, and the thickness not more than 0.5 mm.
5-7. (canceled)
(canceled)
A method of manufacturing a pneumatic tire, comprising steps of:
- forming a lining layer by sticking micro balloons filled with a seal material to contact closely with their side surfaces to each other to an inner surface of an unvulcanized tire and, thereafter,
- forming said lining layer into a puncture prevention layer by curing the unvulcanized
- wherein the seal material is selected from the group comprising butyl rubber, polyisopropylene rubber, isoprene rubber, polybutene, and rubber latex.
(canceled)
Dependencies are inferred from the claim text.