An electric actuator comprises a housing and an output shaft reciprocatingly received by the housing. There is a screw assembly disposed within the housing and coupled to the output shaft. The screw assembly includes a plurality of annular rollers and a central screw received by the annular rollers. The annular rollers are rotatable about the central screw. There is a motor which includes a stator and a rotor. The rotor has an inner bore which engages the annular rollers. Rotation of the rotor causes the central screw to translate axially relative to the rotor and the output shaft to reciprocate relative to the housing.

A clutch module for a powertrain of a motor vehicle, comprises a clutch housing with connection elements; a drive shaft which is rotatably mounted in the clutch housing about a rotational axis by means of a shaft bearing, wherein an outer end portion of the drive shaft lies outside of the clutch housing, and an inner end portion of the drive shaft lies within the clutch housing; a constant velocity joint, a joint outer part of the constant velocity joint being arranged as least partly within the clutch housing and being rotatably mounted in the clutch housing about the rotational axis by means of a joint bearing; and a controllable clutch which is arrange din the clutch housing and which is designed to optionally separate or connect the drive shaft and the joint outer part in order to transmit a torque. A drive assembly can comprise such a clutch module.

A clutch module for a powertrain of a motor vehicle, comprises a clutch housing with connection elements; a drive shaft which is rotatably mounted in the clutch housing about a rotational axis by means of a shaft bearing, wherein an outer end portion of the drive shaft lies outside of the clutch housing, and an inner end portion of the drive shaft lies within the clutch housing; a constant velocity joint, a joint outer part of the constant velocity joint being arranged as least partly within the clutch housing and being rotatably mounted in the clutch housing about the rotational axis by means of a joint bearing; and a controllable clutch which is arrange din the clutch housing and which is designed to optionally separate or connect the drive shaft and the joint outer part in order to transmit a torque. A drive assembly can comprise such a clutch module.

A method for manufacturing a laminated iron core includes providing a plurality of annular iron core piece rows, each of which is configured by annularly arranging a plurality of divided iron core pieces including yokes and teeth, and the yokes of the annularly-adjacent divided iron core pieces in the annular iron core piece row are mutually different in shape. In the method, the annular iron core piece rows are laminated by changing a rotational angle of the newly laminated annular iron core piece row relatively to the lastly laminated annular iron core piece row laminated so that the divided iron core piece with a shape different from that of the divided iron core piece is laminated on the lastly laminated divided iron core piece.

When a control unit starts to supply power to an electromagnetic coil in a first direction, a magnetic force generated by a non-attracting magnetic circuit becomes larger than a magnetic attraction force generated by an attracting magnetic circuit. As a result, a movable member is guided by a guide portion of a yoke and moves to a second position from a first position. When the control unit starts to supply power to an electromagnetic coil in a second direction, the magnetic attraction force generated by the attracting magnetic circuit becomes larger than the magnetic force generated by the non-attracting magnetic circuit. As a result, the movable member is guided by the guide portion and moves to the first position from the second position. Accordingly, the movable member can reliably perform a moving operation when turning ON/OFF.

A surgical instrument comprising a jaw assembly is disclosed. The surgical instrument further comprises a motor-driven drive system configured to manipulate the jaw assembly. The surgical instrument also comprises a control system configured to control the drive system and, also, control a power supply system configured to supply electrical power to electrodes defined in the jaw assembly. In use, the surgical instrument can be used to apply mechanical energy and electrical energy to the tissue of a patient at the same time, or at different times. In certain embodiments, the user controls when the mechanical and electrical energies are applied. In some embodiments, the control system controls when the mechanical and electrical energies are applied.

A control system for and a method of controlling a wheel hub clutch for a wheel hub. The control system includes: a stator; a translator having a permanent magnet; and wiring electrically connecting the stator to an electric power source. The stator is selectively powered through controlled electric power carried by the wiring so as to control translation of the translator through interaction between the stator and the permanent magnet of the translator, and the translation of the translator is controlled between an engaged state and a disengaged state. In the engaged state, a plurality of locking members are engaged with a plurality of notches of a selectively rotatable notch plate whereby the plurality of locking members are in a plurality of pockets of a rotatable pocket plate corresponding to the plurality of notches.

A bistable electromagnetic clutch is provided that includes a first part, a second part and an spring part. The first part includes a yoke with a plurality of iron cores, and an electromagnetic coil on each of the iron cores. The second part includes a moving carrier disc and a magnetic conductive disc that is fixed on a side of the moving carrier disc that is away from the yoke. Several magnets are fixed on the moving carrier disc, and the iron cores and the magnets are provided in a correspondence relation. The spring part is configured to keep the moving carrier disc and the yoke in normally separated positions. Two adjacent electromagnetic coils form a group, two electromagnetic coils in a same group are wound to form a group of windings with identical magnetic polarities, and corresponding two magnets form a group of magnetomotive forces with identical magnetic polarities.

An electromechanical actuator comprising a body and an electric motor driving at least one motion transmission element connected to the body via a brake device, and a unidirectional transmission member, the brake device including an electrical activator member so that when the activator member is powered, the unidirectional transmission member is released relative to the body, and when the activator member is not powered, the unidirectional transmission member is secured to the body and opposes pivoting of the transmission element in one direction of rotation up to a maximum transmissible torque defined by the torque limiter.

Apparatus for utilizing heat wasted from an engine includes first pressure detecting means (73) and first temperature detecting means (81) for detecting a pressure and a temperature in a refrigerant passage extending from a condenser (38) to a refrigerant pump (32), second pressure detecting means (72) and second temperature detecting means (82) for detecting a pressure and a temperature in a refrigerant passage extending from a heat exchanger (36) to an expansion device (37), and control means (71) responsive to these four detecting means when operating a Rankine cycle (31). Means (71) is for diagnosing whether or not an electromagnetic clutch (35) is stuck responsive to either the first pressure detecting means (73) and the first temperature detecting means (81), or the second pressure detecting means (72) and the second temperature detecting means (82).