Abstract: A spray head for a powdered power washer designed to produce a wide diameter spray of water under both high and low water pressure conditions. The washer head includes a spinner tube mounted inside a cylindrical-shaped nozzle body. The upper segment of the spinner tube is held inside the nozzle body by a fixed cassette assembly. A middle and lower segments of the spinner tube extend below and are bent outward and axially offset from the upper segment and from each other. Mounted inside and over the upper end opening of the nozzle tube is an adapter with a threaded cavity formed on one end. The adapter includes a water orifice that delivers water from the handle or wand to the spinner tube. A flat washer with a narrow water orifice is used to deliver a narrow, high velocity stream of water to the spinner tube.

Abstract: An applicator comprising: a casing defined by two side walls and a cylinder wall, said cylinder wall comprising an opening on one side of said casing; a material container coupled to a side of said casing opposite said opening in a position that allows gravity to direct drywall material in said material container towards the interior of said casing, said container including a flow gate configured to control the flow of said drywall material from said material container to the interior of said casing; an adjustable flick plate coupled to said casing at the bottom of said opening; a brush assembly rotatably coupled to said casing, said brush assembly configured to project said drywall material from said opening; and a handle comprising a trigger that controls said flow gate.

Abstract: An apparatus (1) for applying a slurry to a substrate (2). The apparatus includes a delivery drum (4) incorporating a delivery surface (5) disposed to support a layer of slurry. A spattering roller (8) is positioned closely adjacent the delivery drum and is rotatable so as to spatter the slurry from the delivery surface onto the substrate. Regulation means selectively vary or interrupt the flow of slurry from the delivery surface onto the substrate.

Abstract: A centrifugal humidifier having a rotatable body for propelling water outwardly on to an impingement surface that brake up the propelled water into droplets which are then entrained in a stream of air and discharged to the surroundings, wherein the impingement surface has a multiplicity of sawtooth ridges oriented with the more gradually inclined sides facing toward the direction from which the water is propelled by the rotatable body which promotes breaking up the water into finer droplets.

Abstract: The invention pertains to an applicator for applying a fluid to a surface, comprising a frame, an applicator roller, such as a cylindrical brush, rotatably mounted in the frame, a fluid pick-up roller rotatably mounted in the frame, the pick-up roller being positioned beneath and parallel or substantially parallel to the applicator roller and in contact or near contact with the applicator roller, and a reservoir positioned beneath the pick-up roller. The applicator further comprises a skimmer, which is located parallel or substantially parallel to at least part of the pick-up roller.

Abstract: The present invention provides a spray head assembly with a moving spray nozzle that delivers fluid in a substantially uniform spray distribution. The movement of the spray nozzle is a wobbling motion, preferably combined with some rotational motion. The wobbling motion is generated by disposing a wobble inducing member or wobble turbine in the path of the fluid supply. The water flowing over the wobble turbine causes the turbine to wobble. The wobbling turbine then causes the spray housing and nozzle to wobble. The spray pattern produced by the wobbling spray housing changes more or less rapidly so that fluid droplets or streams are directed along arcuate paths rather than at a single point. This type of spray distribution pattern is gentler than many stationary patterns and the unique design of the wobble inducing member does not include complex mechanical parts or significant flow restrictions.

Abstract: A slurry dispenser dispensing slurry by a pair of counter-rotating wheels is provided in a chemical mechanical polishing process used in manufacturing integrated circuits. The slurry dispenser is driven by variable speed motors at a predetermined speed empirically determined to dispense a desired amount of slurry. The shape of the rotating wheels controls the vertical distribution of the spray. Openings in the housing of the slurry dispenser and the speed of rotation of the wheels controls the horizontal distribution of the spray. The slurry dispenser can be constructed out of materials chemically inert with respect to the slurry.

Abstract: An apparatus for controlled dispersion of a fluid as droplets or as a fine mist or vapor. The apparatus comprises a dispersion head for dispersing liquid and a motor for rotating the dispersion head. The dispersion head comprises a bundle of fibres having ends contacting the liquid and tips for dispersing the liquid. The fibres are arranged to produce capillary action in addition to the centrifugal force for moving liquid to the tips for dispersion. The fibres may be formed from stainless steel or glass and have a hollow core. The apparatus is suitable for dispersing liquids with corrosive properties.

Abstract: A droplet applicator (3) utilised for the application of concentrated chemicals, e.g. fertiliser, pesticides or herbicides. The applicator device (3) is comprised of a plurality of fibres (9) extending and rotatable about a central hub (8) such that upon rotation of the device, the chemical liquid supplied to an upper surface is dispersed by the fibres (9).

Abstract: Apparatus for mixing air with liquid, an aerator or oxygenator, comprises a motor or other power drive generally mounted in vertical position on a floating or a fixed structure, the motor having a shaft extending downwards through an opening in the center area of the float or fixed structure and bearing on its lower part a screw pump portion located in a cylindrical volute section just below the water level. When the apparatus is operating, the waste-water is sucked by means of the screw pump from the bottom of the body of liquid at which the apparatus is positioned and is pushed upwards in order to be diffused by means of a centrifugal impeller having outwardly curved blades, at least one of which extends downward to merge with a spiral shaped portion of a blade on the screw pump.

Abstract: Apparatus for mixing air with liquid (aerator or oxygenator) comprises a motor or other power drive generally mounted in vertical position on a float or a fixed structure, the motor having a shaft extending downwards through an opening in the center area of the float or fixed structure and bearing on its lower part a propeller located in a cylindrical volute section just underneath the waterlevel. When the apparatus is operating, the waste-water is sucked by means of the propeller from the bottom of the body of liquid on which the apparatus is floating and pushed upwards in order to be diffused by means of a rotating diffusion head in the shape of a paddle-wheel. This feature increases efficiency of the installation, allowing the velocity of the fluid leaving the propeller to be kept as low as possible and the dimensions of intake volute and propeller to be increased.

Abstract: An aerator for the biological purification of waste water comprises an undulating annular disk of sheet material, centered on a vertical axis of rotation, forming interleaved sets of upper and lower sectors interconnected by generally vertical, radially extending webs. Each lower disk sector defines with the adjacent webs an upwardly open channel whereas each upper disk sector defines with its associated webs a downwardly open channel. A central sleeve, descending from the level of the alternately upwardly and downwardly open channels, obstructs the inner ends of the latter but opens into the inner ends of the former whose effective cross-sectional area is adjustable with the aid of a vertically shiftable shutter ring inside the sleeve.

Abstract: A device for mixing liquids and gases comprising a fan stage above and connected to a distribution stage. The fan stage comprises a plate with blades and a central aperture. The distribution stage comprises a plate, preferably concave with the concavity facing upwards, having a central aperture which is disposed just above or at the level of the liquid. A motor spins both stages. A pipe may be extended from the aperture of the distribution stage down into the liquid.