PROBLEM TO BE SOLVED: To reduce NVH levels of chain engagement.;SOLUTION: A random pattern chain assembly of the present invention improves noise, vibration and harshness (NVH) performance of a silent or inverted tooth chain. The chain assembly preferably uses at least three different link types arranged in a known pattern. The pattern is arranged such that a first link type 22 is never adjacent to a third link type, in that there is always a second link type between the first link type and the third link type.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2019,JPO&INPIT
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