A gravity-feed spreader for particulate matter may include a rotor. The spreader may be operable for gravity-feed operation with the longitudinal axis of the rotor in a horizontal position. A generally cylindrical rotor housing with a pair of closed, axial ends may be coaxial with the rotor. Entrance and exit apertures for the particulate matter may be formed in the surface of the rotor housing between the closed, axial ends. A rotor driver may be coupled to the rotor shaft for rotating the rotor. An intake housing may include a passageway therethrough for the particulate matter. A gate may be provided for selectively opening and closing the particulate matter passageway in the intake housing. An agitator may be coupled to the rotor shaft for facilitating movement of particulate matter through the passageway in the intake housing.

A liquid is mixed with a pressurized air flow through an orifice which breaks it into particles. The liquid particles are entrained in the liquid flow and come into contact with an energized component in the form of a cone or frustum that is in contact with an electrode. The energized component defines a mixing chamber within a spray nozzle. As a result, while in the mixing chamber, the particles become electrostatically charged before exiting the spray nozzle. Embodiments also include a removable cap component within which the energized component nests. The cap component may include a pair of windows that cooperate with tabs on the body of the spray nozzle in order to mechanically engage the cap to the body such that the energized component is properly positioned to mate with the electrode and define the mixing chamber.

A liquid is mixed with a pressurized air flow through an orifice which breaks it into particles. The liquid particles are entrained in the liquid flow and come into contact with an energized component in the form of a cone or frustum that is in contact with an electrode. The energized component defines a mixing chamber within a spray nozzle. As a result, while in the mixing chamber, the particles become electrostatically charged before exiting the spray nozzle. Embodiments also include a removable cap component within which the energized component nests. The cap component may include a pair of windows that cooperate with tabs on the body of the spray nozzle in order to mechanically engage the cap to the body such that the energized component is properly positioned to mate with the electrode and define the mixing chamber.

The central-pivot sprinkler contains a central-pivot sprinkler and a controllable variable spray gun. The controllable variable spray gun has a spray gun main body (2), a booster pump (7), and a spray gun connecting pipe (16). A water inlet of the booster pump (7) is communicated with a sprinkler pipe (15) of the central-pivot sprinkler. A water outlet of the booster pump (7) is connected to a water inlet of the spray gun main body (2) by means of the spray gun connecting pipe (16). The forepart of the spray gun main body (2) is provided with a spray nozzle (12). The tail portion of the spray gun main body (2) can be mounted at the end of a crossing-body (1) of the central-pivot sprinkler by means of a spray gun horizontal-rotation mechanism.

The central-pivot sprinkler contains a central-pivot sprinkler and a controllable variable spray gun. The controllable variable spray gun has a spray gun main body (2), a booster pump (7), and a spray gun connecting pipe (16). A water inlet of the booster pump (7) is communicated with a sprinkler pipe (15) of the central-pivot sprinkler. A water outlet of the booster pump (7) is connected to a water inlet of the spray gun main body (2) by means of the spray gun connecting pipe (16). The forepart of the spray gun main body (2) is provided with a spray nozzle (12). The tail portion of the spray gun main body (2) can be mounted at the end of a crossing-body (1) of the central-pivot sprinkler by means of a spray gun horizontal-rotation mechanism.

A system for painting a structure includes a motorized, wheeled vehicle that is movable along a surface and includes a frame and a lift structure coupled with the frame. The system also includes a support structure supported by the lift structure, and a table supported by the support structure. The table is translatable relative to the support structure. The system also includes a mount structure rotatably coupled with the table and a kit of parts that includes a spray head assembly configured for releasable attachment to the mount structure. The system further includes a paint reservoir and a pump, each being supported by one of the vehicle and the support structure.

A system for painting a structure includes a motorized, wheeled vehicle that is movable along a surface and includes a frame and a lift structure coupled with the frame. The system also includes a support structure supported by the lift structure, and a table supported by the support structure. The table is translatable relative to the support structure. The system also includes a mount structure rotatably coupled with the table and a kit of parts that includes a spray head assembly configured for releasable attachment to the mount structure. The system further includes a paint reservoir and a pump, each being supported by one of the vehicle and the support structure.

A sink-type washing machine includes a case, a drain board, a water pump and a rotary spray arm; the case includes a sink body and a cover plate; the sink body has a recess which forms a drain region, the water pump is inside the drain region, the drain board covers the drain region, the rotary spray arm is above the drain board, water outlets being in communication with the flow channel in the water pump so that water in the drain region can be sprayed into the washing space and above the drain region. A drain board covers the drain region and a water pump is disposed inside the drain region, the water pump is isolated from the washing region by the drain board, so that the water flowing back to the water pump is firstly filtered by the drain board.

A sink-type washing machine includes a case, a drain board, a water pump and a rotary spray arm; the case includes a sink body and a cover plate; the sink body has a recess which forms a drain region, the water pump is inside the drain region, the drain board covers the drain region, the rotary spray arm is above the drain board, water outlets being in communication with the flow channel in the water pump so that water in the drain region can be sprayed into the washing space and above the drain region. A drain board covers the drain region and a water pump is disposed inside the drain region, the water pump is isolated from the washing region by the drain board, so that the water flowing back to the water pump is firstly filtered by the drain board.

According to some embodiments, an oscillating sprinkler system is provided that includes: a central tubular portion having at least one row of flexible nozzles; a cam plate located inside a peripheral wall of said central tubular member, said cam plate having a plurality of cam slots for adjusting positions of said flexible nozzles upon rotation of said cam plate within said peripheral wall; and said peripheral wall including a window via which an edge of said cam plate is observable during rotation of said cam plate such as to designate an extent of angular displacement of the nozzles based on the positioning of the cam plate within the window.