A handheld work apparatus has a blower wheel. The blower wheel is held via a nut on the shaft in a manner locked against rotation by frictional force. A thread moment of friction is transmittable between the nut and the shaft via a thread section. A first moment of friction is transmittable between the nut and the blower wheel via a first friction contact surface. The first friction contact surface is configured such that, at a minimum tightening torque of the nut, the first moment of friction is greater than the thread moment of friction. As a result, during the operation of the work apparatus when there is a relative movement between the blower wheel and the shaft, the blower wheel moves the nut along therewith. The nut retensions the blower wheel against the shaft. The second friction contact surface runs conically with respect to the rotational axis.

A boom hose apparatus for a material collection vehicle includes a telescoping boom assembly and a hose assembly supported by the boom assembly. The boom assembly includes a plurality of telescoping conduits. A flexible hose is received through the telescoping conduits and can slidably extend from, or retract into, the conduits independently from the telescoping of the conduits.

A self-propelled sweeping machine, having a chassis comprising at least one driven drive axle with wheels, for cleaning drivable, preferably solid, ground surfaces such as roads, streets, paths and cycle paths, squares or the like, consists of a refuse collection container which is built onto the chassis for receiving refuse which is lifted from the ground surface by means of generated suction air and/or suction force of a suction air unit comprising a suction air blower, by a suction device provided at the front end of a suction air line, and which is supplied via the connected, preferably rising, suction air line to the interior of the refuse collection container, wherein the refuse collection container has a screening device which is arranged spaced apart from the upper container wall for separating the refuse and, for conducting the suction air, has a downstream air outlet line for the suction air to be discharged, and wherein for the emptying process the refuse collection container is configured at the rear end so as to be pivotable about a horizontal axis arranged transversely to the forward direction of movement, and for emptying refuse the inner face of the rear wall of the refuse collection container is configured as a sliding surface which rises, respectively is inclined, to the rear, wherein the suction air unit, which is line-connected by a suction air opening to the interior of the refuse collection container, is arranged on the outer face of the rear wall of the refuse collection container configured with an internal sliding surface.

A boom hose apparatus for a material collection vehicle includes a telescoping boom assembly and a hose assembly supported by the boom assembly. The boom assembly includes a plurality of telescoping conduits. A flexible hose is received through the telescoping conduits and can slidably extend from, or retract into, the conduits independently from the telescoping of the conduits.

A manure-removal vehicle and an assembly thereof having a manure-discharging location. The vehicle comprises a pump and a tank having an air discharge. The vehicle collects manure by means of a scraper and this is subsequently suctioned up via a manure extraction opening in the tank. The pump works at low power and in particular at low pressure, due to the fact that a constant stream of manure is collected in front of the opening, in particular if a sealing plate is provided.

A manure-removal vehicle and an assembly thereof having a manure-discharging location. The vehicle comprises a pump and a tank having an air discharge. The vehicle collects manure by means of a scraper and this is subsequently suctioned up via a manure extraction opening in the tank. The pump works at low power and in particular at low pressure, due to the fact that a constant stream of manure is collected in front of the opening, in particular if a sealing plate is provided.

The pick-up of waste, especially dog waste, can be cumbersome, dirty, and impractical in some cases. A portable vacuum with a compostable bag at the front end of the vacuum can take away from the weight, mess, and impracticality. A mechanism for closing the compostable bag without direct touch can add to the hygiene, cleanliness, and ease of the process of picking-up waste.

A vacuum installation includes a vacuum chamber having an inlet for aspirating a quantity of liquid or particulate material. A cyclone separation unit having a plurality of cyclones, communicating in parallel with the interior of the vacuum chamber is connected to a vacuum pump to draw air from the vacuum chamber through the cyclones and induce a separating vortex flow within the cyclones. A controller is arranged to control the vacuum pump to provide a chosen flow rate and to selectively deactivate one or more of the cyclones according to the chosen flow rate.

A plate system converts a wheelbarrow to a receptacle for a vacuum device. The plate system includes a vacuum plate body, an intake port, an exhaust port, and a vacuum pump mounted to the vacuum plate body. The vacuum plate body has an upper surface, a lower surface, and a resilient gasket on the lower surface of the vacuum plate body around a perimeter of the vacuum plate body to form a seal between the upper perimeter of the wheelbarrow body and the lower surface of the vacuum plate body when the vacuum plate system is on the wheelbarrow body. The resilient gasket covers an area of the lower surface of the vacuum plate body sufficient to fit over the upper perimeter of a plurality of wheelbarrows having open bodies in a range of sizes.

The invention relates to an appliance which is more particularly applicable in an urban or industrial vacuum cleaner into which the waste is sucked up and then collected in a container. The appliance comprises a flexible tube, the proximal end of which receives the waste and the distal end of which is held by a ring which is pivotable such that the ring can be positioned in one of several pre-defined positions. This variable positioning allows the waste to be deposited in different containers or compartments, according to the characteristics thereof. The appliance can be controlled manually or automatically on the basis of electronic or optical sensors.