A vibratory assembly has a power source with a rotational output, an implement configured to work uncured concrete, and a vibratory head means for receiving a rotational input from the power source and converting the input from the power source into mechanical oscillation and to transfer the mechanical oscillation to the implement.

A vibratory head for a concrete vibrator includes elongate structures suitable for use to consolidate uncured concrete in a horizontal or flat application.

A control apparatus for a soil compacting apparatus which can be driven by a drive motor. The control apparatus includes a running-direction operating element, which is pivotable about a first axis, for predetermining a running direction of the soil compacting apparatus by an operator, and further includes a rotational-speed operating element, which is pivotable about a second axis, for setting a rotational speed of the drive motor. The first axis and the second axis are congruent and form a common pivot axis.

A compactor includes a plate, a frame, an exciter assembly coupled to the plate, and a motor for driving the exciter assembly. The motor is coupled to the exciter assembly by a belt. The compactor further includes a tensioner assembly configured to tension the belt.

A rammer includes: an outer cylinder (31); an inner cylinder (32) slidably contacted with an inside of the outer cylinder (31); a slider (33) connected to a connecting rod (14) and slidably provided in the inner cylinder (32); a first coil spring (34) housed in the upper part of the inner cylinder (32); and a second coil spring (35) housed in the lower part of the inner cylinder (32), wherein the slider (33) is disposed between the first coil spring (34) and the second coil spring (35), wherein a crank shaft has a rotational axis disposed orthogonally to the moving direction, and the first coil spring (34) and the second coil spring (35) have respectively different winding directions to each other.

A screeding machine for screeding uncured concrete includes a base unit, a support mechanism disposed at an end portion of the base unit, and a screed head assembly supported at the support mechanism. The screed head assembly includes (i) a grade establishing member and (ii) a vibrating member. The support mechanism includes a lateral actuator that operates to laterally shift the screed head assembly relative to the base unit in a direction orthogonal to a longitudinal axis of the base unit. A control system is operable to control the lateral actuator to laterally shift the screed head assembly in the direction orthogonal to the longitudinal axis of the base unit to move the screed head assembly toward a wall or structure while the screeding machine moves over uncured concrete in a screeding direction via movement of the base unit along the uncured concrete and alongside the wall or structure.

A stand-alone motor unit includes a housing and an electric motor. The electric motor includes a stator, a rotor rotatable relative to the stator and having an output shaft, a housing in which the stator and rotor are arranged, and an adapter plate coupled to the housing. The adapter plate includes a first plurality of holes defining a first hole pattern. The output shaft of the rotor protrudes from the adapter plate. The motor unit further includes a battery pack for providing power to the motor, a power take-off shaft protruding from the housing, and a gearbox including a second plurality of holes defining a second hole pattern that is identical to the first hole pattern, such that when the first hole pattern is aligned with the second hole pattern, the gearbox is configured to be coupled to the adapter plate.

The present invention provides a motor apparatus having a motor, comprising: a fan that is rotatably supported by a shaft member of the motor, and sends, in a centrifugal direction by rotation, gas taken from an axial direction of the shaft member; and a cover member that covers the fan so as to allow the gas sent in the centrifugal direction from the fan to flow along an outer surface of the motor, wherein the cover member has a blowout port that blows out some of the gas sent in the centrifugal direction from the fan in the centrifugal direction to cool an external mechanism of the motor apparatus.

A compactor includes a plate, a shaft rotatably supported upon the plate, an electric motor configured to cause rotation of the shaft, and an eccentric mass arranged to rotate on the shaft, causing the plate to vibrate in response to rotation of the eccentric mass. The eccentric mass is configured to translate along the shaft.

An apparatus for steering and driving a concrete screed having a frame and a screed head secured thereto includes a plurality of spaced drive wheels rotatably and pivotably secured to the frame at a plurality of points, and a steering member coupled to one or more of the drive wheels for controlling the directional orientation thereof.