A bi-directional clutch assembly includes an outer race defining first and second strut pockets, an inner race defining ratchet teeth, a passive one-way clutch including at least two passive struts each supported in a corresponding first strut pocket for pivotal movement relative to the ratchet teeth, passive strut springs for normally biasing the passive struts into engagement with the ratchet teeth on the inner race, and a selectable one-way clutch having at least one active strut supported in the second strut pocket for pivotal movement between a non-deployed position disengaged from the ratchet teeth and a deployed position engaged with the ratchet teeth, and an armature ring fixed for rotation with the outer race and axially moveable between a non-actuated position and an actuated position, in which a strut engagement feature moves the active strut from its non-deployed position to its deployed position.

A bi-directional clutch assembly equipped with a pair of laterally-spaced, selectable one-way clutches configured in a compact arrangement. The bi-directional clutch assembly establishes a LOCK-LOCK mode when both SOWC's are non-actuated, establishes a FREEWHEEL mode when both SOWC's are actuated, and establishes a pair of LOCK-RATCHET mode when one SOWC is actuated and the other is not actuated. Coils units of the SOWC's are energized to shift an actuator toward active struts of an outer race. The actuator is rotationally fixed to the outer race. The active struts are biased toward the deployed position, and the actuator is biased toward the non-actuated position. The actuator includes a strut engagement feature that contacts the active struts and causes pivotal movement of the active struts to the non-deployed position.

A bi-directional clutch assembly equipped with a pair of laterally-spaced, selectable one-way clutches configured in a compact arrangement. The bi-directional clutch assembly establishes a LOCK-LOCK mode when both SOWC's are non-actuated, establishes a FREEWHEEL mode when both SOWC's are actuated, and establishes a pair of LOCK-RATCHET mode when one SOWC is actuated and the other is not actuated. Coils units of the SOWC's are energized to shift an actuator toward active struts of an outer race. The actuator is rotationally fixed to the outer race. The active struts are biased toward the deployed position, and the actuator is biased toward the non-actuated position. The actuator includes a strut engagement feature that contacts the active struts and causes pivotal movement of the active struts to the non-deployed position.

A bidirectional magnetic clutch for an additive manufacturing system, comprising a concentric arrangement of an inner drive member (2) and an outer drive member (3) enclosing the inner drive member (2), the inner and outer drive members (2,3) being rotatable relative to each other. The inner drive member (2) comprises at least two outward facing recesses (5, 6) and the outer drive member (3) comprises at least two inward facing recesses (8,9). Each outward facing recess (5,6) comprises a radially moveable roller member (10,11) of ferromagnetic material. The inner drive member (2) further comprises a magnetic biasing system (12) configured to magnetically bias the roller members (10,11) into the outward facing recesses (5,6). The bidirectional magnetic clutch further comprises a magnet actuator (13) at least partially circumferentially arranged around the outer drive member (3) and configured to maintain an engaged state or disengaged state of the bidirectional magnetic clutch.

A controllable one-way clutch having a clutch module and a power-operated actuator module. The clutch module includes a first clutch component rotatably driven by an input member, a second clutch component rotatably driving an output member, struts disposed on the first clutch component for movement between a deployed position engaging ratchet teeth on the second clutch component and a non-deployed position disengaged from the ratchet teeth, and strut springs for biasing the struts toward their deployed position. The power-operated actuator module includes a coil unit, an armature moveable between an engaged position whereat the armature holds the struts in their non-deployed positions when the coil unit is powered-off and a released position where the armature releases the struts when the coil unit is powered-on, and a ballramp mechanism configured to move the armature along a helical path between its engaged and released positions.

A controllable one-way clutch having a clutch module and a power-operated actuator module. The clutch module includes a first clutch component rotatably driven by an input member, a second clutch component rotatably driving an output member, struts disposed on the first clutch component for movement between a deployed position engaging ratchet teeth on the second clutch component and a non-deployed position disengaged from the ratchet teeth, and strut springs for biasing the struts toward their deployed position. The power-operated actuator module includes a coil unit, an armature moveable between an engaged position whereat the armature holds the struts in their non-deployed positions when the coil unit is powered-off and a released position where the armature releases the struts when the coil unit is powered-on, and a ballramp mechanism configured to move the armature along a helical path between its engaged and released positions.

A two-mode rocker clutch, including: a clutch gear; a housing; a first pawl including an end and a portion disposed within the housing; an actuation assembly; a second pawl including a portion disposed within the housing; and a resilient element urging the second pawl into contact with the clutch gear. For a one-way mode, the clutch gear is rotatable, with respect to the housing, only in a first circumferential direction. To transition from the one-way mode to a locked mode: the second pawl blocks rotation of the clutch gear, with respect to the housing, in a second circumferential direction, opposite the first circumferential direction; the actuation assembly is arranged to pivot the first pawl into contact with the clutch gear; and the end of the first pawl is arranged to block rotation of the clutch gear, with respect to the housing, in the first circumferential direction.

A controllable one-way clutch having a clutch module and a power-operated actuator module. The clutch module includes a first clutch component rotatably driven by an input member, a second clutch component rotatably driving an output member, struts disposed on the first clutch component for movement between a deployed position engaging ratchet teeth on the second clutch component and a non-deployed position disengaged from the ratchet teeth, and strut springs for biasing the struts toward their deployed position. The power-operated actuator module includes a coil unit, an armature moveable between an engaged position whereat the armature holds the struts in their non-deployed positions when the coil unit is powered-off and a released position where the armature releases the struts when the coil unit is powered-on, and a ballramp mechanism configured to move the armature along a helical path between its engaged and released positions.

A controllable one-way clutch having a clutch module and a power-operated actuator module. The clutch module includes a first clutch component rotatably driven by an input member, a second clutch component rotatably driving an output member, struts disposed on the first clutch component for movement between a deployed position engaging ratchet teeth on the second clutch component and a non-deployed position disengaged from the ratchet teeth, and strut springs for biasing the struts toward their deployed position. The power-operated actuator module includes a coil unit, an armature moveable between an engaged position whereat the armature holds the struts in their non-deployed positions when the coil unit is powered-off and a released position where the armature releases the struts when the coil unit is powered-on, and a ballramp mechanism configured to move the armature along a helical path between its engaged and released positions.

A two-mode rocker clutch, including: a clutch gear; a housing; a first pawl including an end and a portion disposed within the housing; an actuation assembly; a second pawl including a portion disposed within the housing; and a resilient element urging the second pawl into contact with the clutch gear. For a one-way mode, the clutch gear is rotatable, with respect to the housing, only in a first circumferential direction. To transition from the one-way mode to a locked mode: the second pawl blocks rotation of the clutch gear, with respect to the housing, in a second circumferential direction, opposite the first circumferential direction; the actuation assembly is arranged to pivot the first pawl into contact with the clutch gear; and the end of the first pawl is arranged to block rotation of the clutch gear, with respect to the housing, in the first circumferential direction.