CORE-LESS CRAWLER TRACK

WIPO Patent Application WO/2006/123779

A1

A core-less crawler track where the shape of rubber projections meshing with a sprocket is changed so that the rubber projections are not damaged even if earth and sand are deposited on the inner surface of the crawler track. The core-less crawler track has, on its inner peripheral surface, driving rubber projections arranged at predetermined intervals. The rubber projections each have, in a side view, a substantially triangular shape with a drive side inclination surface (Pa) and a brake side inclination surface (Pb). Steps (D) are formed on both inclination surfaces (Pa, Pb), inclination angles (X) on the base side (bottom step) are formed such that the inclination angle (XB) of a brake side inclination surface (Pba) is greater than the inclination angle (XA) of a drive side inclination surface (Paa), and inclinations angles (Y) on the top side (top step) are formed such that the inclination angle (YA) of a drive side inclination surface (Pab) is greater than the inclination angle (YB) of a brake side inclination surface (Pbb).

JPS5924029	[Title of the Invention] Crawler
JPH11222169	INNER CIRCUMFERENCE DRIVING TYPE RUBBER CRAWLER
JP2019112001	ELASTIC CRAWLER

MATSUO SHUICHI (JP)
UCHIDA SHINJI (JP)
SUGIHARA SHINGO (JP)

PCT/JP2006/310038

November 23, 2006

May 19, 2006

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BRIDGESTONE CORP (JP)
MATSUO SHUICHI (JP)
UCHIDA SHINJI (JP)
SUGIHARA SHINGO (JP)

B62D55/253; B62D55/12

JP2004216992A	2004-08-05
JPH09193852A	1997-07-29
JP2004098793A	2004-04-02
JP2000072057A	2000-03-07
JP2000053038A	2000-02-22

See also references of EP 1882627A4
None

Nakajima, Jun (NAKAJIMA & KATO Seventh, Floor, HK-Shinjuku Bldg., 3-17, Shinjuku 4-chome, Shinjuku-k, Tokyo 22, JP)

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