A clutch device includes an outer disk carrier, outer disks, an inner disk carrier, inner disks, and at least one lug. The outer disk carrier has first axially running grooves, a first edge, and a first edge side. Each of the outer disks has radial projections spaced apart by depressions and projecting into the first axially running grooves. The inner disk carrier has second axially running grooves, a second edge, and a second edge side. Each of the inner disks has radial projections spaced apart by depressions and projecting into the second axially running grooves. The lug is arranged between two grooves of the first axially running grooves and extending axially from the first edge side, or arranged between two grooves of the second axially running grooves and extending axially from the second edge side.

A clutch device includes an outer disk carrier, outer disks, an inner disk carrier, inner disks, and at least one lug. The outer disk carrier has first axially running grooves, a first edge, and a first edge side. Each of the outer disks has radial projections spaced apart by depressions and projecting into the first axially running grooves. The inner disk carrier has second axially running grooves, a second edge, and a second edge side. Each of the inner disks has radial projections spaced apart by depressions and projecting into the second axially running grooves. The lug is arranged between two grooves of the first axially running grooves and extending axially from the first edge side, or arranged between two grooves of the second axially running grooves and extending axially from the second edge side.

A backdrive braking element is provided for preventing backdrive of a shaft. It includes a poly-lobed locking mechanism including an unlock shaft that has a polygon shaped inside profile and is coupled to a poly lock drive and brake assembly. The poly lock drive and brake assembly includes a plurality of poly lock drive and brake segments and is contained within the interior cavity of a housing.

A backdrive braking element is provided for preventing backdrive of a shaft. It includes a poly-lobed locking mechanism including an unlock shaft that has a polygon shaped inside profile and is coupled to a poly lock drive and brake assembly. The poly lock drive and brake assembly includes a plurality of poly lock drive and brake segments and is contained within the interior cavity of a housing.

A wedge clutch, including: outer and inner races; a wedge plate radially between the inner and outer races; and an electromagnetic actuator. The electromagnetic actuator includes: a coil; a first coil core piece including a first end disposed within the coil and a second end connected to the wedge plate; and a second coil core piece including a first end disposed within the first coil and a second end connected to the wedge plate. In a locked mode of the clutch, the inner race and outer races and the wedge plate are non-rotatably connected for rotation of the inner race in a circumferential direction. In a free-wheel mode of the clutch, the inner race is rotatable, with respect to the outer race, in the circumferential direction. To transition from the locked mode to the free-wheel mode, the electromagnetic actuator is arranged to be energized to radially contract the wedge plate.

A wedge clutch, including: outer and inner races; a wedge plate radially between the inner and outer races; and an electromagnetic actuator. The electromagnetic actuator includes: a coil; a first coil core piece including a first end disposed within the coil and a second end connected to the wedge plate; and a second coil core piece including a first end disposed within the first coil and a second end connected to the wedge plate. In a locked mode of the clutch, the inner race and outer races and the wedge plate are non-rotatably connected for rotation of the inner race in a circumferential direction. In a free-wheel mode of the clutch, the inner race is rotatable, with respect to the outer race, in the circumferential direction. To transition from the locked mode to the free-wheel mode, the electromagnetic actuator is arranged to be energized to radially contract the wedge plate.

A wedge clutch, including: outer and inner races; a wedge plate radially between the inner and outer races; and an electromagnetic actuator. The electromagnetic actuator includes: a coil; a first coil core piece including a first end disposed within the coil and a second end connected to the wedge plate; and a second coil core piece including a first end disposed within the first coil and a second end connected to the wedge plate. In a locked mode of the clutch, the inner race and outer races and the wedge plate are non-rotatably connected for rotation of the inner race in a circumferential direction. In a free-wheel mode of the clutch, the inner race is rotatable, with respect to the outer race, in the circumferential direction. To transition from the locked mode to the free-wheel mode, the electromagnetic actuator is arranged to be energized to radially contract the wedge plate.

A wedge clutch, including: outer and inner races; a wedge plate radially between the inner and outer races; and an electromagnetic actuator. The electromagnetic actuator includes: a coil; a first coil core piece including a first end disposed within the coil and a second end connected to the wedge plate; and a second coil core piece including a first end disposed within the first coil and a second end connected to the wedge plate. In a locked mode of the clutch, the inner race and outer races and the wedge plate are non-rotatably connected for rotation of the inner race in a circumferential direction. In a free-wheel mode of the clutch, the inner race is rotatable, with respect to the outer race, in the circumferential direction. To transition from the locked mode to the free-wheel mode, the electromagnetic actuator is arranged to be energized to radially contract the wedge plate.

A wedge plate for a wedge clutch assembly for selectively engaging or disengaging an inner hub and an outer ring including first wedge plate segments arranged radially between the inner hub and outer ring, each of the first wedge plate segments including a first circumferentially extending groove and a first retaining element disposed in the first circumferentially extending groove and urging the first wedge plate segments radially inward to contact the inner hub.