Abstract: A torque limiting clutch comprises a driving part and a driven part disengagably interconnected in torque transmitting relationship by a torque transmitting element guided by a cage, a spacer movable by the cage into spacing relationship with both the driving and driven parts on disengagement of the clutch by relative movement between the parts in either direction, to maintain the torque transmitting element out of torque transmitting relationship with the parts. The clutch is re-engagable by relative rotation between the driving and driven parts in the opposite direction. The clutch includes two sets of inter-engagable abutments, the abutments of the first set being provided on the cage and the abutments of the second set being provided on one of the parts and being operable to cause abutments of the first and second to inter-engage to cause the cage and one of the parts to rotate together.

Abstract: An overload clutch comprising a driving part and a driven part releasably interconnected in torque transmitting relationship by balls, held in a cage in engagement with torque transmitting recesses of the parts and which can be disengaged by relative rotation between the driving and driven parts when the torque to be transmitted exceeds a predetermined value and in which spacers are moved by the cage into spacing relationship with the parts to maintain the balls out of engagement with the recesses after disengagement with the clutch, and wherein the clutch can be re-engaged by relative rotation between the parts in the reverse direction to that which caused disengagement by the provision of two pairs of inter-engageable abutments and a first control means to prevent inter-engagement of one pair of the abutments as a result of relative rotation when the clutch is disengaged and to permit of inter-engagement of the abutments of the other pair on resetting by relative rotation in the reverse direction, and secon

Abstract: A torque limiting clutch including driving and driven members maintained in driving engagement with rolling torque transmitting elements by spring means in which spacer elements are movable into spacing engagement with the driving and driven members on overrunning of the clutch while the torque transmitting elements are maintained within receiving means and in which the torque transmitting elements are free from pressure engagement with the driving or driven member, not provided with the receiving means, during overrunning of the clutch. The spacer elements may be in rolling engagement with the driving and driven members and one of said members may be provided with a track for the spacer elements which track is rotatable relative to said one member.