A fan with airfoil blades is provided for a regenerative air vacuum street sweeper. The blades are formed using cut and pressed upper and lower panels which are welded at a forward edge to a rod to form the airfoil leading edge and welded at the rear edges to form the airfoil trailing edge. Pins extend laterally outwardly from the rod for mounting each blade in corresponding holes in the front and rear plates of the fan housing. The side edges of the blade are welded to the plates at a 9-11° angle of attack. The airfoil blades allow for reduced size, horse power, noise, and manufacturing and shipping costs.

A debris-collecting apparatus includes a draft inducer operable to draw air and debris, an input portion for receiving incoming air and debris caused by operation of the draft inducer, and a bagging portion. The bagging portion includes a hood having an arcuate portion, a bag removably positioned below the hood and having an inner face, and a bagging passage for directing the air and debris from the input portion to the hood. The arcuate portion extends from the bagging passage to the bag such that the air and debris from the bagging passage travels along the arcuate portion and thereafter apply a dislodging force to dislodge debris collected at the inner face of the bag.

A vacuum unit includes a debris tank receiving wet or dry waste. A multi-cyclone separator is coupled to an outlet of the debris tank. The multi-cyclone separator receives the wet or dry waste from the debris tank and the multi-cyclone separator includes a plurality of cyclones. A filter is coupled to the outlet of the multi-cyclone separator and receives exhaust airflow from the multi-cyclone which then flows onto the blower or fan and is vented external to the vacuum unit.

A utility vehicle to remove a matter from a surface may include an articulated collector attached to a front section of the utility vehicle. The articulated collector is movable. The articulated collector is also configured to remove the matter from the surface. A matter container is also connected to the utility vehicle. The articulated container is also connected to the matter container. The matter container is configured to receive and hold the matter. Furthermore, an articulated depositor is connected to the matter container. The articulated depositor is configured to deposit the matter to a disposal site.

A clay court drying apparatus including a vacuum attachment, wherein the vacuum attachment may include a vacuum head; an intake portion formed in a first region of the vacuum head; and an outlet portion formed in a second region of the vacuum head. The clay court drying apparatus may further include a filter mechanism disposed at the intake portion of the vacuum head.

A hydraulic driving device of a suction car includes a HST circuit, a suction actuator, a supply channel and a switching valve. In the HST circuit, a first connection channel and a second connection channel connect between a traveling drive pump and a traveling motor in a closed circuit. The suction actuator suction drives a suction device by being actuated by a hydraulic pressure. The switching valve allows oil discharged from the traveling drive pump to the first connection channel to be supplied to the traveling motor in a first operation state. The switching valve allows oil discharged from the traveling drive pump to the first connection channel to flow into the supply channel and be supplied to the suction actuator in a second operation state.

A pet waste collection device for collecting and discarding animal waste is provided. The device comprises a shaft with a vacuum head mounted to the shaft. A vacuum motor is mounted within the vacuum head. A nozzle is connected to the shaft and the vacuum motor provides a suction to the second end of the nozzle. A retractable claw member having a plurality of extendable claw fingers extends from the nozzle. A waste bag is positioned within the claw member. An access port is formed in the vacuum handle. Upon collection of the pet waste in the waste bag, the claw fingers close as the claw member retracts into the nozzle, the open end of the waste bag closing shut. The bagged pet waste is suctioned by the vacuum motor through the shaft to a waste bag receptacle within the vacuum handle and removable from the receptacle through the access port.

A cleaning vehicle comprises a rolling chassis and a primary power source (13) in the form of a combustion engine which is able and configured to drive the vehicle. A suction installation (30) is provided which has an underpressure chamber (20) and a pump device (31,32,33) coupled thereto. The pump device comprises a primary pump unit (31,32) which draws its input power from the primary power source (13). In addition, the pump device comprises a secondary pump unit (33) which is optionally driven directly by a secondary power source in the form of an electric motor. The secondary power source (33) is supplied independently of the primary power source (13) by an electrical power supply.

The present invention relates to a road sweeping apparatus with a disposable bag mounted, and more particularly, to a road sweeping apparatus driving at a low speed corresponding to that of walking of a worker to more conveniently collect all kinds of wastes scattered on a road in an automatic or manual manner, in which a bag into which the collected wastes are put is installed inside a loading unit and simultaneously the bag is easily slidably withdrawn toward one side of the loading unit to easily collect the bag. In addition, fuel consumption is reduced by a motor-driven manner through a battery and simultaneously exhaust gas including carbon is not generated to be quite eco-friendly.

The object of the invention is a filtering device that can be coupled to a suction turbine (30) of the type used to suction pet faeces. Another object of the invention is the vacuum incorporated in said filtering device. The filtering device comprises an outer body (10) and a cartridge (20) that are partially disposed in the interior of the outer body (10) comprising an open front end (26) for suctioning the faeces (40) and a closed rear end (27), at least one opening (21) disposed on the surface (28) for the passage of the air flow (50) from the interior of the cartridge (20) to the interior of the outer body (10) and a filtering material (22).