Patent ID: 7591357
Filing Date: 2009-09-22
Classification: F16D,F16F

Abstract:
1. A decoupler comprising: a rotary driving member; a rotary driven member coaxially mounted with said driving member for relative rotary movement therewith; a decoupling assembly extending between said driving member and said driven member, said decoupling assembly selectively coupling said driving member and said driven member when said driving member rotates relative to said driven member in a first coupling sense and said decoupling assembly uncouples said driving member from said driven member when said driving member rotates relative to said driven member in a second sense opposite said first sense; said decoupling assembly including a spring and a one-way clutch mechanism, said spring is a torsional spring having a first end engaging one of said driven and driving members and a second end engaging a carrier, and said one-way clutch mechanism including a clutch spring having a first end engaging said carrier and a plurality of coils helically extending frictionally engaging the other of said driven and driving members; said clutch spring including a coating applied thereto; and a torsional vibration damper mounted for rotation with one of said driving member and said driven member.