Patent ID: 7670241

Claim:
A continuously variable transmission metal belt comprising: a metal ring assembly including a plurality of endless metal rings laminated on one another; and a plurality of metal elements supported on the metal ring assembly, wherein each metal ring includes a side edge, a radially central plane, a radially inner peripheral surface and a radially outer peripheral surface, and wherein a lateral-most arcuate projecting portion, which is part of a circle having a predetermined radius, is formed at a tip end of the side edge and is disposed only between the radially central plane and the radially inner peripheral surface, wherein the side edge of the metal ring comprises a first transition region defined between the lateral-most arcuate projecting portion and the radially outer peripheral surface and a second transition region defined between the radially inner peripheral surface and the lateral-most arcuate projecting portion so that with said first and second transition regions, the side edge is formed to have a gradually reduced thickness in a direction extending toward the tip end, and wherein the circle having the predetermined radius is distanced from the radially inner peripheral surface toward a radially outer side and a length of the first transition region in a widthwise direction of the metal ring is longer than a length of the second transition region.