A permanent magnet DC (PMDC) motor, including: a motor body including a revolving shaft; a Hall sensing module; a gear reducer; and a gear assembly including an output shaft; and a magnet ring. The gear assembly is disposed in the gear reducer. The gear assembly is connected to and driven by the revolving shaft of the motor body. The magnet ring is disposed on the revolving shaft or on the output shaft of the gear assembly. The Hall sensing module is disposed on the gear reducer. The Hall sensing module is adapted to sense a signal of the magnet ring to detect the revolving speed of the revolving shaft or the output shaft, and transmit detected data with regard to the revolving speed.

An actuator includes a yoke extending about a rotation axis. A coil is wrapped about the yoke. A rotor having a direct axis and a quadrature axis is supported for rotation about a rotation axis relative to the yoke. The rotor has a reluctance along the direct axis that is different than a reluctance along the quadrature axis to rotate the rotor when current is applied to the coil.

A system of providing a mechanical soft start of a load driven by an electrical motor is provided. The system includes, in addition to the rotor driven by the electric motor during normal operation, a drive belt coupled to both the electric motor and the rotor for communicating mechanical power from the electric motor to the rotor. The system further includes a secondary motor, and a primary roller coupled to the secondary motor, wherein the roller is selectively engaged with the drive belt during a mechanical soft-start to communicate mechanical power from the secondary motor to the rotor without requiring mechanical power from primary motor.

A system of providing a mechanical soft start of a load driven by an electrical motor is provided. The system includes, in addition to the rotor driven by the electric motor during normal operation, a drive belt coupled to both the electric motor and the rotor for communicating mechanical power from the electric motor to the rotor. The system further includes a secondary motor, and a primary roller coupled to the secondary motor, wherein the roller is selectively engaged with the drive belt during a mechanical soft-start to communicate mechanical power from the secondary motor to the rotor without requiring mechanical power from primary motor.

A high energy spring drive to control a high voltage circuit breaker is described. The high energy spring drive includes a closing assembly positioned at a first end and an opening assembly positioned at a second end, a charging assembly positioned between the closing and opening assembly, and a transmission assembly. The closing and opening assembly control the closing and opening of circuit breaker. The charging assembly includes a worm wheel arrangement coupled to a motor to transfer torque to a motor shaft, to energize the closing assembly, a decoupling mechanism to decouple the worm wheel arrangement from the motor shaft on energization of the closing assembly, and a cam-follower mechanism. The transmission assembly actuated by the follower of the cam-follower mechanism is to electrically close a circuit breaker when the follower rotates in a first direction and electrically open the circuit breaker when the follower rotates a second direction.

A high energy spring drive to control a high voltage circuit breaker is described. The high energy spring drive includes a closing assembly positioned at a first end and an opening assembly positioned at a second end, a charging assembly positioned between the closing and opening assembly, and a transmission assembly. The closing and opening assembly control the closing and opening of circuit breaker. The charging assembly includes a worm wheel arrangement coupled to a motor to transfer torque to a motor shaft, to energize the closing assembly, a decoupling mechanism to decouple the worm wheel arrangement from the motor shaft on energization of the closing assembly, and a cam-follower mechanism. The transmission assembly actuated by the follower of the cam-follower mechanism is to electrically close a circuit breaker when the follower rotates in a first direction and electrically open the circuit breaker when the follower rotates a second direction.

A drive system for a working machine with a working device which can be unloaded for starting, wherein the drive system comprises at least one main motor, which is designed as an electric machine, in particular as an asynchronous motor, and a motor shaft; an auxiliary motor, which is designed as an electric machine, in particular as an asynchronous motor; and a starting device for starting the auxiliary motor. The auxiliary motor is configured to start and/or accelerate the working machine, in particular up to a synchronous speed of the main motor.

A drive with a motor and devices for coupling the motor to a driving object. The coupling devices include a centrifugal mass which is movable by the motor, and an impact stop, which is connected to the driving object, for the centrifugal mass.

A drive with a motor and devices for coupling the motor to a driving object. The coupling devices include a centrifugal mass which is movable by the motor, and an impact stop, which is connected to the driving object, for the centrifugal mass.

A motor with one-way rotation including: a stator having a stator core, an upper insulator joined to the upper portion of the stator core, and a lower insulator joined to the lower portion of the stator core; a rotor having a rotor housing which includes a disc part having a hollow portion formed at the center and a side wall part vertically formed along the outer circumference of the disc part in the upward direction, and a plurality of magnets attached to the inner face of the side wall part of the rotor housing, the disc part having a one-way bearing seating portion formed around the hollow portion; a rotary shaft penetrating through the central portions of the stator and the rotor; and a one-way bearing having an outer wheel joined to the one-way bearing seating portion and an inner wheel joined to the rotary shaft.