| 摘要 |
PROBLEM TO BE SOLVED: To provide an air sack which can be rapidly and uniformly expanded and deformed when the internal pressure is dropped, and a safety tire having the air sack. SOLUTION: The air sack for the safety tire comprises a case member 1 having a hollow annular shape which keeps a gas in its internal space, at least one hoop reinforcing layer 2 which is composed of a rubber coated body where a cord extending along the tire circumferential direction is coated with a rubber, arranged on an outer circumferential side of a crown part of the case member 1 to sustain the tension applied to the air sack when the internal pressure of the tire is in a normal state, and ruptured when the internal pressure in the tire is dropped, and at least one intermediate layer 3 arranged between the case member 1 and the hoop reinforcing layer 2. A connection end A having the angleθwith respect to an equatorial plane of the tire and jointed in a mutually overlapping manner is provided on the hoop reinforcing layer 2. COPYRIGHT: (C)2008,JPO&INPIT
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