A tool for cleaning debris from a joint between paver blocks laid over a ground, the tool having: a wand having an outer surface that defines a tubular profile, having an aft end that defines an aft end opening, a forward end that defines a forward end opening, and a middle section that connects the aft and forward ends, wherein the aft end is configured to connect to a vacuum suction port of a vacuum so that the vacuum is fluidly coupled to the aft end opening; and a pick connected to the forward end of the wand, wherein the pick extends below the forward end of the wand, whereby, in operation, the wand is configured for being moved over the joint to dislodge debris within the joint.

An autonomous coverage robot includes a cleaning assembly having forward roller and rearward rollers counter-rotating with respect to each other. The rollers are arranged to substantially maintain a cross sectional area between the two rollers yet permitting collapsing therebetween as large debris is passed. Each roller includes a resilient elastomer outer tube and a partially air-occupied inner resilient core configured to bias the outer tube to rebound. The core includes a hub and resilient spokes extending between the inner surface of the outer tube and the hub. The spokes suspend the outer tube to float about the hub and transfer torque from the hub to the outer tube while allowing the outer tube to momentarily deform or move offset from the hub during impact with debris larger than the cross sectional area between the two rollers.

A vacuum-cleaner nozzle assembly has a base nozzle forming a downwardly open suction mouth having a lower edge and of a predetermined horizontal width measured in a direction transverse to a working direction of the base nozzle. A first and second expansion fitting each form a respective downwardly open suction mouth of a predetermined horizontal width substantially greater than the width of the mouth of the base nozzle, the width of the second fitting being greater than that of the first fitting. Each expansion fitting has an upwardly open seat complementary to and fittable with the lower edge of the base nozzle and a suction port in the seat such that, when the base nozzlenestle is fitted to the seat, aspiration through the base nozzle draws air upward from the suction mouth of the respective expansion fitting.

A vacuum cleaner includes a body, an electrically-driven suction unit, a device for collecting dust, a suction channel, a nozzle communicating with the body through the suction channel, an intake device for ensuring an additional portion of air fed into the suction channel and being adjustable between an opened and a closed state, and a control unit for controlling the suction unit. The intake device is bi-directionally electrically connected to the control unit, so that transmission of data or signals between the intake device and the control unit is enabled. The control unit is configured to generate a signal for controlling the intake device in the event of detecting the cleaning start signal or the cleaning end signal. A method for operating a vacuum cleaner is also provided.

A vacuum tool configured to be removably coupled to hose or wand of a vacuum includes a body including a first end, a second end, and a first longitudinal axis extending between the first end and the second end. The vacuum tool also includes a head coupled to the first end of the body, a connection portion coupled to the second end of the body and configured to couple the body to a hose or wand of a vacuum cleaner, and a brush coupled to the head. The brush includes an elongate support defining a second axis perpendicular to the longitudinal axis of the body and configured to couple the brush to the head, and a plurality of bristles positioned on the elongate support.

A manure collecting vehicle includes: a manure collector having a manure collection port and at least one powered rotational manure conveyer to convey manure to the manure collection port as the vehicle drives through the manure; a manure holding tank in manure communication with the manure collection port, collected manure passing through the manure collection port into the manure holding tank as the vehicle drives through the manure; and, an air system to create an air pressure differential between inside the manure holding tank and outside the manure holding tank when the vehicle is driving through the manure to be collected so that the collected manure passes from the manure collection port into the manure holding tank under influence of the air differential.

Disclosed is a robot cleaner which adjusts a suction area of air suctioned into a suction port through a shutter and a shutter driving device configured to operate the shutter, so that a flow rate of air is adjusted, thus more effectively suctioning dust in the air by using a fan motor having a fixed capacity.

Disclosed is a vacuum cleaner that opens or closes a hole formed in a suction portion according to a state of a surface to be cleaned, thereby efficiently cleaning. A vacuum cleaner includes a suction portion configured to suck foreign materials on a surface to be cleaned. The suction portion includes a case having an air hole formed in a flow path, a frame configured to be accommodated in the case and open or close the air hole, and a button configured to be mounted on the case and be operated to move the frame.

A tool for a vacuum cleaner that comprises a nozzle and a bristle assembly. The nozzle comprises an elongate suction opening. The bristle assembly, which is mounted within the nozzle and protrudes through the suction opening, comprises a carrier to which a strip of bristles is attached.

An assembly including a canister. A vacuum is in fluid communication with the canister. A pump having a pump inlet is in fluid communication with an interior of the canister and a pump outlet is in fluid communication with an exterior of the canister. At least one valve is located fluidly downstream of an outlet of the pump and is configured to circulate fluid within the canister in a first position.