A conical surface friction type overrunning clutch includes a first intermediate ring and a second intermediate ring which are provided between an inner ring and an outer ring, and force amplifying transmission mechanisms are connected respectively to conical surface friction pairs. All of the force amplifying transmission mechanisms and the conical surface friction pairs operate within a parameter scope in which they would not lock themselves, the force amplifying transmission mechanisms are in a constant engaged state, and the conical surface friction pairs exert an initial press via an elastic pre-tightening part or a magnetic member. When tangential external component forces in different directions are generated between the inner ring and the outer ring, the conical surface friction pairs are sliding or stay in a stationary state under the action of the force amplifying transmission mechanism, thus the functions of overrunning and self-locking of the overrunning clutch are realized.

A conical surface friction type overrunning clutch includes a first intermediate ring and a second intermediate ring which are provided between an inner ring and an outer ring, and force amplifying transmission mechanisms are connected respectively to conical surface friction pairs. All of the force amplifying transmission mechanisms and the conical surface friction pairs operate within a parameter scope in which they would not lock themselves, the force amplifying transmission mechanisms are in a constant engaged state, and the conical surface friction pairs exert an initial press via an elastic pre-tightening part or a magnetic member. When tangential external component forces in different directions are generated between the inner ring and the outer ring, the conical surface friction pairs are sliding or stay in a stationary state under the action of the force amplifying transmission mechanism, thus the functions of overrunning and self-locking of the overrunning clutch are realized.

A drive assembly for a torque converter includes an axially movable turbine defining a piston of a lockup clutch; and a damper assembly including a first component including a plurality of first ramps and a second component including a plurality of second ramps, the first ramps configured for interacting with the second ramps to generate an axial force on the turbine during a coast condition of the torque converter, the damper assembly being arranged and configured to limit the axial force to prevent the piston from self-locking during the coast condition.

A drive assembly for a torque converter includes an axially movable turbine defining a piston of a lockup clutch; and a damper assembly including a first component including a plurality of first ramps and a second component including a plurality of second ramps, the first ramps configured for interacting with the second ramps to generate an axial force on the turbine during a coast condition of the torque converter, the damper assembly being arranged and configured to limit the axial force to prevent the piston from self-locking during the coast condition.

A clutch (1) with an inner ring (2) arranged about an axis of rotation (d) and an outer ring (3) arranged coaxially in reference thereto, as well as an elastic clamping ring (4) arranged between them and radially limited thereby, with the inner ring (2) and the clamping ring (4) resting on each other via a ramp device (9), arranged bi-directionally effective in the circumferential direction, and clamping segments (13) pointing radially outwardly and arranged distributed in the circumferential direction, form in case of a radial displacement of the clamping ring (4) forming with the outer ring (3) a clamping connection in at least one circumferential direction. In a further aspect, a radial displacement of the clamping ring (4) is provided via a ramp device (12) effective in the axial direction, switched by an axial displacement of the inner ring (2) in reference to the clamping ring (4).

A clutch (1) with an inner ring (2) arranged about an axis of rotation (d) and an outer ring (3) arranged coaxially in reference thereto, as well as an elastic clamping ring (4) arranged between them and radially limited thereby, with the inner ring (2) and the clamping ring (4) resting on each other via a ramp device (9), arranged bi-directionally effective in the circumferential direction, and clamping segments (13) pointing radially outwardly and arranged distributed in the circumferential direction, form in case of a radial displacement of the clamping ring (4) forming with the outer ring (3) a clamping connection in at least one circumferential direction. In a further aspect, a radial displacement of the clamping ring (4) is provided via a ramp device (12) effective in the axial direction, switched by an axial displacement of the inner ring (2) in reference to the clamping ring (4).

A friction clutch (1) with an inner ring (2) arranged about a rotary axis (d) and an outer ring (3) arranged coaxially in reference thereto, as well as an elastic intermediate ring (3) arranged between these two in a radially limited fashion, with the inner ring (2) and the intermediate ring (4) resting on each other via a ramp arrangement (9) arranged and acting bi-directionally in the circumferential direction. In order to embody the clutch (1) easily and cost-effectively, segments (13) pointing radially outwardly and arranged distributed over the perimeter form in connection with a radial displacement of the intermediate rings (4) relative to the outer ring (3) a positive connection (22) in the circumferential direction with the radial displacement of the intermediate ring (4) being provided with a ramp arrangement (12) effective in the axial direction and switched by an axial displacement of the inner ring (2) in reference to the intermediate ring (4).

A friction clutch (1) with an inner ring (2) arranged about a rotary axis (d) and an outer ring (3) arranged coaxially in reference thereto, as well as an elastic intermediate ring (3) arranged between these two in a radially limited fashion, with the inner ring (2) and the intermediate ring (4) resting on each other via a ramp arrangement (9) arranged and acting bi-directionally in the circumferential direction. In order to embody the clutch (1) easily and cost-effectively, segments (13) pointing radially outwardly and arranged distributed over the perimeter form in connection with a radial displacement of the intermediate rings (4) relative to the outer ring (3) a positive connection (22) in the circumferential direction with the radial displacement of the intermediate ring (4) being provided with a ramp arrangement (12) effective in the axial direction and switched by an axial displacement of the inner ring (2) in reference to the intermediate ring (4).

A clutch for a vehicle includes a hub disposed on a rotary shaft such that a rotation thereof is restricted, a sleeve spline-coupled to an outer circumference of the hub, a clutch member disposed on the rotary shaft, and a clutch ring disposed between the clutch member and the hub, wherein the clutch ring is pressed against the clutch member by the sleeve and the hub, wherein the clutch ring comprises a pressed part to which an amount of force pressing against the clutch member is applied from the sleeve and the hub, the sleeve comprises pressing protrusions that transfer the axial driving force of the sleeve to the pressed part, and the hub comprises displacement converting portions that convert a relative rotational displacement with respect to the clutch ring into an axial linear displacement of the clutch ring.

A clutch for a vehicle includes a hub disposed on a rotary shaft such that a rotation thereof is restricted, a sleeve spline-coupled to an outer circumference of the hub, a clutch member disposed on the rotary shaft, and a clutch ring disposed between the clutch member and the hub, wherein the clutch ring is pressed against the clutch member by the sleeve and the hub, wherein the clutch ring comprises a pressed part to which an amount of force pressing against the clutch member is applied from the sleeve and the hub, the sleeve comprises pressing protrusions that transfer the axial driving force of the sleeve to the pressed part, and the hub comprises displacement converting portions that convert a relative rotational displacement with respect to the clutch ring into an axial linear displacement of the clutch ring.