| 摘要 |
An endless power transmission chain-belt is disclosed that is especially adapted for drivingly connecting the pulleys of a pulley transmission. The chain-belt ha s a chain that is an assembly of a plurality of interleaved sets of links. A pivot means extends through the chains to lace and pivotally interconnect adjacent sets of links to provide an endless chain-belt. The sets of links of the chain are held together by the pivot means. A plurality of first load blocks are connected to the chain-belt. The first load blocks have at least one projection that extends in a direction towards the chain. The projection engages adjacent pivot means to secure the first load blocks to the chain. The first load blocks extend substantially across the width of the chain and have a substantially flat first bearing surface that is positioned adjacent the links. Each first load block has lateral edges shaped to frictionally engage the pulleys of the pulley transmission. A plurality of second load blocks are connected to the chain-belt. The second load blocks have at least one projection that extends in a direction towards the chain. The seco nd load blocks have a second bearing surface that is positioned adjacent the links. The second bearing surface is disposed at an angle with respect to the first bearing surface of the first load blocks. The second load blocks are disposed at an angle with respect to said first load blocks when the first and second bearing surfaces are in contact with the links and each second load block has lateral edges shaped to frictionally engage the pulleys of the transmission.
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