 Image Number 3 for United States Patent #4511186.
A sprocket wheel assembly of a crawler vehicle which comprises a first inner tube mounted on a drive shaft, a second inner tube rotatably mounted on a final reduction gear casing and fixedly connected with the first inner tube, and an outer tube disposed so as to extend over the outer circumferences of the first and second inner tubes. A first elastic annular block unit is interposed between the first annular tube and one end section of the outer tube and a second elastic annular block unit is interposed between the second inner tube and the other end section of the outer tube. A sprocket wheel for driving a linked-together endless track is fixedly mounted to the outer tube.
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