Patent ID: 7823989

Claim:
A rubber crawler ( 1 ) supporting an endless rubber belt ( 22 ) guided around two toothed wheels and supporting rollers positioned between them, a plurality of parallel metal links ( 11 ) being embedded at regular distances from each other in circumferential direction of the rubber belt ( 22 ) and extending in a lateral direction of the rubber belt ( 22 ), each metal link ( 11 ) comprising a base ( 5 ) provided with a sprocket engager ( 15 ) in its center, a first ( 2 ) and a second ( 12 ) wing extending in the lateral direction of the crawler ( 1 ) at opposing sides ( 6 , 16 ) with respect to the sprocket engager ( 15 ), and a first ( 3 ) and second ( 13 ) protrusion at opposing sides ( 6 , 16 ) of the sprocket engager ( 15 ) and extending in a height direction of the metal link ( 11 ) with respect to the base ( 5 ), each protrusion ( 3 , 13 ) comprising a first ( 4 ) and a second ( 14 ) running surface element which extends in a longitudinal direction of the crawler ( 1 ), in which the second running surface element ( 14 ) is positioned shifted in longitudinal and the lateral direction of the belt ( 22 ) with respect to the first running surface element ( 4 ), in which the first running surface element ( 4 ) protrudes from one side of the metal link ( 11 ) and the second running surface element ( 14 ) protrudes from an opposite side of the metal link ( 11 ) in the longitudinal direction of the crawler ( 1 ), in which the upper surfaces form a running surface ( 7 , 17 ) for guiding the supporting rollers, in which the first ( 4 ) and the second ( 14 ) running surface elements of adjacent metal links ( 11 ) are positioned adjacent with respect to each other in the longitudinal direction, wherein the base ( 5 ) of the metal links ( 11 ) is at least partially embedded into a first rubber composition ( 20 ) and wherein the first ( 3 ) and second ( 13 ) protrusions of adjacent metal links ( 11 ) are partially embedded in and connected to each other by a second rubber composition ( 21 ) which has a higher elasticity than the first rubber composition ( 20 ) and which is vulcanized with the first rubber composition ( 20 ) for forming a continuous layer of rubber.