The invention relates to a tamper device for a screed of a working machine, in particular a paver. The device comprises a rotatable driveable tamper shaft with an eccentric section, an 5 eccentric bushing mounted on the eccentric section, and a connecting rod rotatable mounted on the eccentric bushing for being driveable with stroke motions having a stroke, the stroke being adjustable by an rotational adjustment of a relative rotational positioning between the eccentric bushing and the eccentric section. The device further comprises an inner-toothed hollow 10 wheel gear train for providing the rotational adjustment. The gear train is connected to the tamper shaft, to the eccentric bushing, and to a drive force receiving element configured to be able to receive a drive force for driving the innertoothed hollow wheel gear train when the tamper shaft is rotating.

The invention relates to a vibration generator for piling machines, compactors or other construction machines, having at least two unbalance trains, each comprising unbalanced masses which are rotatingly drivable by a drive apparatus, and an adjustment apparatus for adjusting the phase position of the rotating unbalanced masses relative to each other. According to the invention, the unbalanced masses of different unbalance trains are arranged coaxially without a fixed transmission ratio relative to each other, wherein the unbalanced masses of a first unbalance train are arranged between the unbalanced masses, coaxial therewith, of a second unbalance train, and the drive apparatus is designed to drive the unbalance trains with rotation speed differences which are variable relative to each other.

A massage system for a seat of a vehicle includes a drive motor, a sliding member having a hollow pillar shape, a first end of the sliding member being blocked by a plate member and a second end of the sliding member being opened, a housing member having a hollow pillar shape, a first end of the housing member being blocked by a partition and a second end of the housing member being opened, and a drive gear module operably connected to the drive motor, wherein at least one roller member is extended toward the housing member at an edge of the plate member, and at least one cam protruding toward the sliding member is formed at a circumference of the partition, wherein a cam profile is formed at a surface of the cam.

An eccentric shaft assembly includes a first eccentric shaft including an interior surface forming a recess therein, an exterior surface, at least one first fluid inlet extending between the interior surface and the exterior surface, at least one first fluid outlet extending between the interior surface and the exterior surface. The eccentric shaft assembly further includes a second eccentric shaft disposed in the recess of the first eccentric shaft that includes a second bearing surface engaging the first bearing subassembly opposite the first bearing surface and at least one first fan blade for rotating about an axis of rotation to force a fluid to enter the recess through the first fluid inlet(s) and exit the recess through the first fluid outlet(s), to lubricate and/or cool a bearing subassembly disposed between the first eccentric shaft and the second eccentric shaft.

The present invention relates to a system for performing assays on a solid phase to measure the level of analyte in a sample. Such a system may perform immunoassays using electrochemiluminescence (ECL) including a counterbalanced orbital shaking apparatus for assay consumables.

A vibrator assembly includes a housing defining a longitudinal central axis and a rotor in the housing and spaced apart from the central axis. The rotor defines a longitudinal rotational axis that is parallel to the central axis. The rotor is configured to rotate about the rotational axis and, in response, to rotate about the central axis.

The present invention relates to a system for performing assays on a solid phase to measure the level of analyte in a sample. Such a system may perform immunoassays using electrochemiluminescence (ECL) including a counterbalanced orbital shaking apparatus for assay consumables.

A vibratory drive system comprises a rotatable drive shaft and an out-of-balance wheel that is coaxial with and rotatable relative to the drive shaft. A rotary transmission system couples the drive shaft to the wheel in order to transmit rotational movement of the drive shaft to the wheel. The rotary transmission system comprises a shaft gear, a wheel gear, and intermediate gears coupling the shaft gear to the wheel gear. The intermediate gears are carried by a gear carrier that is rotatable relative to the drive shaft, and are rotatable with respect to the gear carrier. The arrangement allows the phase angle of the out-of-balance wheel to be adjusted with respect to the drive shaft.

A pedaling vibrational apparatus includes a seat body, a pedal assembly, a gear plate assembly, a drive assembly and an eccentric assembly, like a lever structure. By treading the pedal assembly, the gear plate assembly drives the drive assembly to rotate. The drive assembly is connected with the eccentric assembly. A user can fully exercise muscles of the user's body during exercise, and a vibrational effect generated by the eccentric assembly can stimulate acupuncture points of the user's body to improve blood circulation. Left and right pedals of the pedal assembly can be treaded in turn to continuously drive a gear to rotate in a same direction so as to achieve an effect of acceleration and to enhance vibrations.

A dynamic imbalanced force generator includes a pair of eccentric masses and a shaft frame. The generator further includes at least one support plate of a motor arranged radially with respect to the shaft frame, and a gear system. A second imbalance is arranged between a first imbalance and the shaft frame, and coaxially with respect to the first imbalance. At least one motor is supported by the plate and engaged with at least one of the first and second imbalances by the gear system. The support plate and the motor are arranged between the imbalances and the shaft frame.