Title:
HIGHLY ELASTIC RUBBER CRAWLER
Document Type and Number:
WIPO Patent Application WO/1992/021549
Kind Code:
A1
Abstract:
A highly elastic rubber crawler mounted on a mobile working machine, having an improved durability, being easily passed around a drive wheel and giving no damage to a paved road surface, wherein engageable holes (H) into which the tops of teeth of the drive wheel are fitted are provided on the main body (R) of the crawler, engageable portion (1b) for being in mesh with the roots of teeth of the drive wheel are provided between the engageable holes, projections (1a, 1a') for preventing the drive wheel from falling off are provided at both sides of the engageable portion, and lugs (2a, 2b) project from the outer peripheral surface thereof. The inner peripheral layer (1) including the projections is formed of highly rigid urethane rubber, the outer peripheral layer (2) including the lugs is formed of vulcanized rubber or an equivalent elastic member, and on the side of the inner peripheral layer in the vicinity of a border surface between the inner peripheral layer and the outer peripheral layer in the main body of the crawler, reinforcing cords (3) having high strength are aligned and embedded in the circumferential direction of the crawler at the both sides of the engageable holes, while, in a direction perpendicular to the circumferential direction at the engageable portions.
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Inventors:
KATOH YUSAKU (JP)
UCHIYAMA TSUYOSHI (JP)
UCHIYAMA TSUYOSHI (JP)
Application Number:
PCT/JP1992/000691
Publication Date:
December 10, 1992
Filing Date:
May 27, 1992
Export Citation:
Assignee:
FUKUYAMA RUBBER IND (JP)
International Classes:
B62D55/24; B62D55/253; (IPC1-7): B62D55/253
Foreign References:
| JPS347957B1 | ||||
| JPS5034818B1 | 1975-11-11 | |||
| JPS55119572A | 1980-09-13 | |||
| JPS5911469B1 | 1984-03-15 | |||
| JPH02117276U | 1990-09-19 | |||
| JPS53830Y2 | 1978-01-12 |
Other References:
See also references of EP 0589040A4
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