Patent ID: 8757879

Claim:
A roller maintaining chain comprising: an elongate strip having multiple holes defined along an axial direction thereof, the holes being separated by separation blocks, each hole having a hole face which is defined between two adjacent separation blocks and perpendicular to the axial direction of the elongate strip, each separation block having a top separation block and a bottom separation block, each of the top and bottom separation blocks having an accommodating surface which is located adjacent to the hole, each of the accommodating surfaces of the top and bottom separation blocks having a flat surface and an inclined stop surface, a part of each of the accommodating surfaces of the top and bottom separation blocks being perpendicular to planes on the axial direction of the elongate strip, the flat surfaces of the top and bottom separation blocks smoothly connected to each other, the inclined stop surfaces of the top and bottom separation blocks being inclined toward a top direction of the holes.