Power transmitting chain and power transmitting apparatus having the same

A power transmitting chain comprising:

• a plurality of links aligned in a chain advancing direction and a plurality of connecting members extended in a chain width direction orthogonal to the chain advancing direction for connecting the links to each other;
• wherein each of the connecting members includes a first power transmitting member and a second power transmitting member;
• wherein the first power transmitting member includes an opposed portion opposed to the corresponding second power transmitting member;
• wherein the opposed portion is brought into rolling and sliding contact with the corresponding second power transmitting member at a contact portion thereof displaced in accordance with varying a bending angle between the links;
• wherein a locus of moving the contact portion in accordance with bending between the links forms an involute curve;
• wherein an end face of the first power transmitting member is formed with a contact region brought into contact with a sheave face of a pulley and the contact region includes a contact center point;
• and
• wherein with regard to an orthogonal direction orthogonal to the chain advancing direction and the chain width direction, a distance between the contact center point and the contact portion when the bending angle is zero and a distance between the contact center point and the contact portion when the bending angle is an allowable maximum bending angle are equal to each other.