A vibratory system for a compactor machine, the vibratory system optionally including a key shaft, an input shaft, a first output shaft and a second output shaft. The key shaft can have a first internal helically splined portion and a second internal helically splined portion. The first internal helically splined portion can be oppositely splined with respect to the second internal helically splined portion and arranged axially of the second internal helically splined portion. The input shaft can be configured with an external helically splined portion configured to be complimentary to the first internal helically splined portion of the key shaft. The first output shaft can be configured couple to the input shaft for rotation therewith. The second output shaft can have an external helically splined portion configured to be complimentary to the second internal helically splined portion of the key shaft.

The disclosure relates to integrated modules for Synchronized Array of Vibration Actuators (FIG. 125A). The modules provide physical interface, power and communication interfaces. Each module may include vibration actuators (FIG. 123A) which can be precisely attached and aligned to the module housing, a microcontroller or other microprocessor, and one or more sensors for closed loop control of actuators (FIG. 126G). Interleaved pairs of ERMs having a center of mass in the same plane eliminate parasitic torque. A single module can produce a vibration force that rotates at a specific frequency and magnitude, which on its own could cancel out some types of periodic vibrations (FIG. 125B). Two modules paired together and counter-rotating with respect to each other can produce a directional vibration at a specific frequency and magnitude, which could prove even more useful for canceling out a vibration. Such modules are also employed to produce beating patterns (FIGS. 131-133). Both amplitude and frequency of the beating force are variable.

A vibration motor, including a shell defining a cavity therein, an axis disposed entirely within the cavity, a first magnet which is rotationally movable relative to the shell and which includes at least two sections having alternating poles, and a second magnet including at least two sections having alternating poles. A first extension tab is attached to the first magnet and extends out of the shell via a slot. An unbalanced rotor is disposed between the first and the second magnets and is rotatable relative to the axis. The first extension tab is movable within the slot, such that moving the tab causes movement of the first magnet and changes a rotational position of the first magnet relative to the second magnet, thereby to change the efficiency of operation of the motor.

The present disclosure provides a vibration device, including a stator, an eccentric wheel and an electromagnetic driving assembly. The eccentric wheel rotates around a rotating shaft relative to the stator. The electromagnetic driving assembly includes at least one magnetic element and an induction coil. The at least one magnetic element is disposed on the eccentric wheel. The induction coil corresponds to the magnetic element, and the induction coil is disposed on the stator. When acurrent is applied to the induction coil, the induction coil acts with the magnetic element to generate an electromagnetic force to drive the eccentric wheel to rotate around the rotating shaft, so that the vibration device generates a vibration. The rotating shaft is disposed on the stator.

Motor-vibrator assembly for a vibrating machine having a plurality of motor-vibrators, each having a synchronous motor and at least one eccentric mass divided into two bodies fixed to two respective free ends of the shaft of the motor. The motor-vibrator assembly comprises position sensing means to sense the angular position and the angular velocity of the shafts of the synchronous motors, electronic drive devices to operate the synchronous motors and an electronic control unit, which is configured to control the electronic drive devices based on the angular positions and on the angular velocities sensed, so that the motor-vibrator assembly generates a predetermined vibratory motion.

The present application provides a wheel rotation imaging device and a wheel rotation imaging intelligent advertising system. In the wheel rotation imaging device, power can be supplied by means of rotation of a wheel with the use of a self-powered unit, so an external power supply is not required; texts, images and videos can be displayed; in addition, a variety of sensors are integrated to acquire operation information of the device in real time, which facilitates the wheel rotation imaging device to adjust the imaging angle and brightness.

A vibrating toothbrush and an eccentric shaft are proposed. The vibrating toothbrush includes a head in which bristles are planted, and a handle from which a head coupler protrudes, the head being detachably coupled to the head coupler. The toothbrush includes an electric motor accommodated in the handle to generate rotating force; and an eccentric shaft rotatably connected to the electric motor, at least a portion thereof being eccentric to generate vibration and thereby transmit vibration to the head coupler. The eccentric shaft includes a motor fixing part connected to the electric motor; an eccentric weight configured to be offset from a rotation center of the electric motor; and a rotating shaft formed of a metal material, and connecting the motor fixing part and the eccentric weight.

Devices and methods for removing material from a slanted roof. The devices include motorized unbalanced rotors in a mounting frame adapted to mounting to roof structural features. The methods include mounting the devices to roof structures and actuating the motor, generating vibrations that are propagated to the roof surface to disengage undesirable debris, such as snow.

The present disclosure provides a vibration device, including a stator, an eccentric wheel and an electromagnetic driving assembly. The eccentric wheel rotates around a rotating shaft relative to the stator. The electromagnetic driving assembly includes at least one magnetic element and an induction coil. The at least one magnetic element is disposed on the eccentric wheel. The induction coil corresponds to the magnetic element, and the induction coil is disposed on the stator. When a current is applied to the induction coil, the induction coil acts with the magnetic element to generate an electromagnetic force to drive the eccentric wheel to rotate around the rotating shaft, so that the vibration device generates a vibration. The rotating shaft is disposed on the stator.

A pump, comprising a rotor axially located between a fluid inlet section and a fluid outlet section, wherein the rotor is configured to rotate about a center axis, a stator surrounding the rotor, wherein the stator includes an inner diameter surface and an outer diameter surface, wherein the inner diameter surface includes a groove surrounding the stator and concentric about the center axis, and a ring surrounding the stator, wherein the ring is adjacent to the groove and defines a gap between an outer diameter of the surface and an inner surface of the ring, wherein the ring includes a ring mass and the stator includes a stator mass, and the ring mass is substantially equal to the stator mass.