Patent ID: 7306532
Filing Date: 2007-12-11
Classification: F16G

Abstract:
1. Transmission chain having a number of links coupled by pivot joint assemblies, each joint assembly comprising a first and a second elongated pin one of which is longer than the other, the longer of the first and second elongated pins being cooperating in a force-transmitting way with the opposite sheaves of a pair of pulley sheaves, and in which the height of the second elongated pin is greater is than the height of the first elongated pin, of which the first elongated pin rolls, during operation, with a curved longitudinal surface thereof over the opposite, longitudinal surface of the second elongated pin, and in which the first and second elongated pins have mutual different cross-section configurations, wherein said opposite longitudinal surface of the second elongated pin comprises a flat longitudinal surface which, near to the upper and lower longitudinal edges thereof, transitions via respective in-cross-section curved first and second transition planes which are directed away from this longitudinal surface into respective adjacent, broadened, head end parts of the second elongated pin, in which the cross-sections of the curved first and second transition planes are complementary to the outline of the surface parts of the first elongated pin which cooperate therewith, wherein the second elongated pin of each joint assembly is held immobile with respect to a portion of the number of links in the chain by first and second curved surfaces at the respective end parts of the second elongated pin on an opposite side of the second elongated pin as the first and second transition planes corresponding with the curvature of the link opening in which said pin is accommodated.