| 摘要 |
PROBLEM TO BE SOLVED: To improve a coming-off-prevention effect while maintaining a foreign matter eliminating property in a driving sprocket. SOLUTION: This driving sprocket 30 comprises a rotary plate 31 arranged on one of right and left sides of a driving projection of an elastic crawler, and a plurality of driving pins 32 engaged with the driving projection and transmitting a driving force. All of the driving pins 32 are fixed and cantilevered on an outer peripheral side of the rotary plate 31 on one of right and left end sides, and intervals between all of the driving pins 32 gradually becomes narrow from the rightward and leftward rotary plate side toward the other side. COPYRIGHT: (C)2007,JPO&INPIT
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