Chain for continuously variable transmission

A chain for a continuously variable transmission, the chain being wound to span between two pulleys, the two pulleys each having a pair of facing conical surfaces that are able to change a distance between the two pulleys, the chain being sandwiched between the pair of facing conical surfaces in each pulley, and the chain comprising:

• a plurality of link units, each of the link units:
• (i) has at least one opening:
• (ii) extends lengthwise in a circumferential direction of the chain;
• and (iii) is plate-shaped, the link units being stacked in a width direction of the chain;
• and
• a plurality of pins, each of the pins having:
• (i) a first end that extends through the at least one opening of a first link unit of the plurality of link units;
• and (ii) a second end that extends through the at least one opening of a second link unit of the plurality of link units, the first link unit being adjacent to the second link unit in a circumferential direction, wherein
• each of the pins contacts the pair of facing conical surfaces at the first end of the pin and the second end of the pin, the first end of the pin contacting one facing conical surface of the pair of facing conical surfaces, and the second end of the pin contacting another facing conical surface of the pair of conical surfaces;
• the first end of the pin and the second end of the pin each have an end face with a shape curve, which is defined as a curved shape of the end face of the first end and the second end of the pin;
• the shape curve has a curvature radius in a plane perpendicular to the circumferential direction of the chain that is larger at a contact point located on an inner side of the end face in a pulley radial direction than an initial contact point;
• and
• the initial contact point is located at a vertex of the shape curve at a distance above a center line of each of the plurality of pins.