Patent ID: 8047920
Filing Date: 2011-11-01
Classification: E05Y,F16D,Y10S

Abstract:
1. A decoupler comprising: a hub that is rotatable about an axis; a pulley disposed concentrically about the hub and rotatable about the axis; a one-way clutch having an input member and an output member, the one-way clutch permitting transmission of rotary power from the pulley to the output member, but not from the output member to the pulley; and a torsion spring disposed between the output member of the one-way clutch and the hub to transmit rotary power from the output member to the hub; wherein the output member of the one-way clutch is rotatable relative to the hub about the axis between a first position and a second position, wherein positioning of the output member in a first position locks the output member to the hub so that rotary power transmitted through the torsion spring is limited to a predetermined maximum torque, and wherein all rotary power transmitted through the one-way clutch is transmitted to the hub through the torsion spring when the output member is positioned between the first and second positions.