US 7,320,547 B2
Ball chain
Chang-hsin Kuo, Taichung (Taiwan); and Chien-Kuen Lai, Taichung (Taiwan)
Assigned to Hiwin Technologies Corp., Taichung (Taiwan)
Filed on Jan. 11, 2006, as Appl. No. 11/306,777.
Prior Publication US 2007/0160313 A1, Jul. 12, 2007
Int. Cl. F16C 29/06 (2006.01)
U.S. Cl. 384—45  [384/51] 9 Claims
OG exemplary drawing
 
1. A ball chain comprising a plurality of spacers, each of which is a hollow ring-shaped structure, a diameter of the respective spacers is smaller than that of balls, a long narrow connecting member is connected at either side of the balls to form an elongated chain structure, the balls are received between the spacers, and a spacer at either end of the chain is formed with a protruded connecting block, the connecting blocks each has an abutting surface, and the abutting surfaces are parallel to a radial direction of a center of the radius of curvature of the ball chain, the abutting surfaces of the connecting blocks of the spacers at both ends of the chain are mated with each other, and limit axial rotation of the spacers at both ends of the ball chain.