A coupling for transmitting torque from a drive to a load has a first connection for connection with the drive, a second connection for connection with the load, and an elastic element for vibration damping and between the first and second connections in the energy transmission path therebetween. An actuator carried on the elastic element has a base body and a centrifugal mass body rotatable relative thereto. One of the two bodies carries an electrical conductor and the other of the two bodies carries a permanent magnet. The conductor is in a magnetic field of the permanent magnet. Thus a flow of current through the conductor makes the centrifugal mass body exert an angular force on the base body to compensate for rotational vibrations.

The present invention relates to a two-speed transmission for an electric driving vehicle and the two-speed transmission for an electric vehicle has only one actuator. The transmission comprises a planetary gear mechanism (12), an elastic body (44), an armature (26) to integrally rotate with an input axis, an electromagnetic coil (46) and a multi-plate friction clutch (30). A ring gear (20) is fixed to a housing. The armature (26) comprises clutch projection portions (26-1). A dog clutch is constituted by the clutch projection portions (26-1) and recess portions (18-2) of a sun gear (18). When the electromagnetic coil (46) is not electrically energized, the dog clutch is engaged. The rotation of the input axis is reduced and is transmitted to an output axis via the sun gear (18) and a carrier (16). When the electromagnetic coil (46) is electrically energized, the armature (26) is displaced against elastic force, the dog clutch becomes a non-engaging state, a multi-plate friction clutch (30) becomes an engaging state by pressing flange portions (26-4) of the armature (26) and the rotation of the input axis is transmitted to the output axis with a one-to-one relationship. The transmission can comprise a one-way clutch to prevent torque interruption when switching the gear ratio.

The disclosure relates to a disengagement system for actuating a clutch, in particular a clutch in the powertrain of a motor vehicle between the drive motor and the transmission, having a threaded spindle which is rotationally fixed to the clutch at an end region and is thus connected to the drive motor. The disengagement system additionally comprises a disengagement unit, having a stator and a rotor which is connected to the stator by an axial bearing, wherein the rotor rotates together with the threaded spindle and is in engagement with the threaded spindle via a spindle nut, and the clutch is actuated by adapting the rotational speed of the rotor.

A surgical instrument comprising a shiftable transmission is disclosed. The transmission comprises a mechanism for assuring that the transmission is in one of a plurality of predefined configurations.

A coupling and control assembly includes first and second rotatable coupling members. The first coupling member has a first coupling face with locking formations, and the second coupling member has a second coupling face with pockets and in opposition with the first coupling face of the first coupling member and a third face spaced from the second coupling face and with passages communicating with the pockets. Locking members in the pockets transmit torque between the first and second coupling members. A stator includes an electromagnetic source, and a translator is translatable, rotatable, and coupled to the second coupling member to be rotatable therewith. The translator may include springs in the passages to actuate the plurality of locking members, or a permanent magnetic source cooperative with the electromagnetic source to translate the translator. An apertured retainer plate may be coupled to the second coupling member to facilitate pivoting of the plurality of locking members.

A clutch assembly for a motor vehicle drivetrain for coupling coupling elements for conjoint rotation includes a clutch unit, a brake unit and at least one permanent magnet between the clutch unit and the brake unit. The clutch unit is shiftable into a coupling state in which the coupling elements are coupled to one another by shifting the clutch unit from a first position in which the coupling elements are decoupled into a second position in which the coupling elements are coupled. First and second electrically energizable coils are electrically energizable to move the permanent magnet from the first position into the second position or vice versa. A holding plate is located adjacent to the at least one permanent magnet to suppress magnetic flux from the at least one permanent magnet to the brake unit. A motor vehicle drivetrain containing at least one clutch assembly is also provided.

An axle disconnect device including a shift collar slidable in an axial direction of the axle disconnect device, the shift collar switchable between a connect mode and a disconnect mode; a first solenoid including a threaded end; a second solenoid including locker arm; a return spring configured to bias a movement of the shift collar towards the connect mode; a groove on the shift collar configured to receive the locker arm when the shift collar is in the connect mode; and a lead screw on the shift collar configured to mesh with the threaded end to move the shift collar toward the disconnect mode against the bias force of the return spring.

A surgical instrument system comprising a first motor, a second motor, and a third motor is disclosed. The surgical instrument system comprises a first handle comprising a first number of controls, a second handle comprising a second number of controls, and a shaft assembly. The shaft assembly is attachable to the first handle in a first orientation in order to engage one of the motors. The shaft assembly is attachable to the second handle in a second orientation to engage a different motor. The surgical instrument system is configured to perform a different function of an end effector in the first orientation and the second orientation.

The disclosure relates to an electromagnetic brake or clutch having an electromagnet, a permanent magnet and an armature plate interacting with the electromagnet and the permanent magnet, which armature plate is arranged on a hub body so as to be non-rotatable but nevertheless axially displaceable, the electromagnet having a magnet housing and a coil received therein, wherein the magnet housing has, on the armature plate side, an outer ring body providing an external pole and an inner ring body providing an internal pole, characterized in that the inner ring body carries the permanent magnet on the armature plate side and that a web which serves as magnetic flux bridge and connects the inner ring body to the outer ring body is disposed between the inner ring body and the outer ring body.

A clutch assembly for a motor vehicle drivetrain for coupling coupling elements for conjoint rotation includes a clutch unit, a brake unit and at least one permanent magnet between the clutch unit and the brake unit. The clutch unit is shiftable into a coupling state in which the coupling elements are coupled to one another by shifting the clutch unit from a first position in which the coupling elements are decoupled into a second position in which the coupling elements are coupled. First and second electrically energizable coils are electrically energizable to move the permanent magnet from the first position into the second position or vice versa. A holding plate is located adjacent to the at least one permanent magnet to suppress magnetic flux from the at least one permanent magnet to the brake unit. A motor vehicle drivetrain containing at least one clutch assembly is also provided.