Patent ID: 7678000
Filing Date: 2010-03-16
Classification: F16H

Abstract:
1. A tensioning arrangement used in combination with an endless linkage of a drive train mounted on a frame, comprising: at least one tension arm; at least one spool mounted at the at least one tension arm and biased in engagement against the endless linkage, wherein the at least one spool includes a rib generally centrally located between opposing first and second endwalls of the spool, the rib having a greater outer diameter relative to an outer diameter of an adjacent cylindrical portion abutting each side of the rib, and a spindle configured to insert through a first opening in the at least one tension arm in rotational support of the at least one spool, the spindle including a first stepped portion having a greater outer diameter relative to an outer diameter of a second stepped portion, wherein the first stepped portion receives the spring and wherein the second stepped portion receives the opening of the at least one tension arm and the opening in the at least one spool, wherein the spindle includes an opening through both the first and second stepped portions so as to receive a threaded fastener therethrough wherein both opposing first and second endwalls are of greater outer diameter relative to the rib and relative to the adjacent cylindrical portions between the rib and the first and second endwalls so as to steer the endless linkage between the first and second endwalls in general alignment with the rib; wherein a spring biases the at least one spool in engagement against the endless linkage relative to the frame, the spring including a hook free end spaced apart from a linear-shaped free end, wherein the hook free end engages at the at least one tension arm, and wherein the linear shaped free end engages at the frame.