To provide a motor-assist bicycle tire containing a sealant of excellent sealing ability, which can be filled with air by an existing bicycle pump and an air valve thereof.
A tube 52 includes a partition 55 dividing the interior surrounded with a peripheral wall 54 into two parts, an air chamber 53 having a substantially circular section, which is surrounded with an air chamber peripheral wall 41 and the partition 55, is filled with air, and a sealant chamber 57 having a substantially circular-arc, which is surrounded with a sealant chamber peripheral wall 40 and the partition 55 is filled with a known liquid sealant 58. Main components of this air valve system 6 are an air valve 60 of such as American type valve structure, which is superior to air tightness than a British valve, and incompatible with an air pump for the British valve and a cap-like adapter 61 which is screwed in the tip of the air valve 60 to enable the use of the air valve for the British valve.
TODA MUNEHIRO
HASHIMOTO TAKESHI
SAKAGAMI KOJI
