Wedge clutch with anti-expansion retainer

A clutch comprising:

• a carrier;
• a hub;
• a wedge disk radially disposed between the carrier and the hub and having a shoulder, wherein the wedge disk is configured to radially expand to frictionally engage between the hub and carrier when the clutch is locked;
• and
• a retainer configured to engage with the shoulder to prevent radial expansion of the wedge disk when the clutch is unlocked.

A clutch comprising:

• an outer race supported for rotation about an axis and defining an annular groove;
• an inner race supported for rotation about the axis and defining a tapered surface with a cammed profile projecting radially outward;
• a disk including an outer edge disposed in the groove and an inner edge with a cammed profile disposed on the tapered surface, wherein the cammed profiles cooperate to radially expand the disk into frictional engagement with the groove to lock the clutch when the disk and the inner race rotate relative to each other;
• and
• a retainer axially moveable relative to the disk and configured to engage with the disk to prevent radial expansion of the disk when the retainer is in a first position corresponding to an unlocked state of the clutch and to not engage with the disk when the retainer is in a second position corresponding to a locked state of the clutch.