Patent ID: 9599199
Date: 2017-03-21
CPC Classifications: F02B,F16F,F16H

Claim:
1. A tensioner for maintaining tension in an endless drive member, comprising: an arm movably mountable to a stationary structure; a pulley rotatably mounted to the arm and which is engageable with the endless drive member; and a first resilient element connected between the base and the first body, the first resilient element having a first stiffness coefficient; a second body moveable relative to the first body, the second body being connected to the arm; a second resilient element connected between the first body and the second body, the second resilient element having a second stiffness coefficient that is different than the first stiffness coefficient; and an actuator, positionable in a first state in which the actuator fixes the position of the first body relative to the base, and a second state in which the actuator permits movement of the first body relative to the base by the first resilient element,