Patent ID: 6743131
Filing Date: 2004-06-01
Classification: F16H

Abstract:
A tensioning device for a drive system having a flexible drive element mounted on at least one driven member, the tensioning device comprising:a first tensioning member having a first side, a second side, and a first contact surface for contacting the drive element; a second tensioning member having a first side, a second side, and a second contact surface for contacting the drive element; and an elongated connecting member having a first end and a second end, the connecting member defines at least one longitudinal contour along the length of the connecting member that reinforces the stiffness of the member wherein the first sides of the tensioning members are secured to the respective ends of the connecting member in a spaced relationship, with the first and second contact surfaces of the tensioning members in opposing disposition and spaced apart to permit first and second runs of the drive element to pass between the tensioning members while in contact with the first and second contact surfaces, respectively, the connecting member holding the tensioning members a fixed distance from one another during operation of the drive system, such that during operation, the tensioning device can respond to fluctuations in load on the drive element by moving in a direction parallel to the drive element at the points of contact between the drive element and the tensioning members, and wherein the second sides of the tensioning members remain unconnected for free access to the drive element therebetween.