Abstract:
The invention relates to a spray head having a slot-shaped central air outlet opening and preferably a slot-shaped paint nozzle for forming a flat jet of paint in an air-propelled application process.
Abstract:
A vacuum cleaner includes a device for dispensing atomized liquid, the device having a reservoir for holding liquid and an ultrasonic transducer arranged to atomize the liquid in the reservoir. An airflow is created through the reservoir via the exhaust gasflow from the vacuum cleaner, the airflow carrying the atomized liquid via an elongate tube to dispensing outlet provided on a cleaning head of the vacuum cleaner. The ultrasonic transducer is simple and inexpensive, yet is able to reliably atomize the liquid for dispensing.
Abstract:
The invention is an alternative to a conventional atomizing coating apparatus. The apparatus and associated coating methodology of the invention provides a uniform atomized fluid stream, and, in turn, a uniform coating to an object on an industrial scale. The apparatus and methodology addresses many of the critical parameters associated with the conventional curtain and atomizing coating techniques, including but no limited to, uniform distribution, acoustical transparency, reduction or elimination of clogged nozzles, and elimination of the need for reciprocating nozzles.
Abstract:
Methods of applying multi-component liquid sprays are described. The methods include using the first array of first component spray orifices to produce a first spray of the first liquid; using the second array of second component spray orifices to produce a second spray of the second liquid; and mixing at least a portion of the first spray and at least a portion of second spray.
Abstract:
A method for applying a foam composition to a paper web is provided. Specifically, a foam applicator is positioned adjacent to a surface of the web. The foam applicator defines an extrusion slot through which the foam composition is capable of flowing. In one embodiment, the extrusion slot is in communication with an air channel. The foam composition is optionally entrained with an air stream traveling through the air channel. The foam composition contacts at least one liquid-permeable partition (e.g., wire-mesh screen) to fragment gaseous bubbles contained therein.
Abstract:
There is claimed a method for depositing fluid material from a linear nozzle in a substantially uniform manner across and along a surface. The method includes directing gaseous medium through said nozzle to provide a gaseous stream at the nozzle exit that entrains fluid material supplied to the nozzle, said gaseous stream being provided with a velocity profile across the nozzle width that compensates for the gaseous medium's tendency to assume an axisymmetric configuration after leaving the nozzle and before reaching the surface. There is also claimed a nozzle divided into respective side-by-side zones, or preferably chambers, through which a gaseous stream can be delivered in various velocity profiles across the width of said nozzle to compensate for the tendency of this gaseous medium to assume an axisymmetric configuration.
Abstract:
A liquid coating nozzle is provided with a first block which has an inner liquid reserving section that extends in the longitudinal direction and an inner discharge section which includes a plurality of small holes formed in the longitudinal direction at a bottom portion of the liquid reserving section. The nozzle is also provided with a second block which has an inner space defining a gas reserving section that extends in the longitudinal direction outside the first block and an outer discharge section formed in the longitudinal direction at a bottom portion of the inner space. The outer discharge section includes a plurality of small holes and produces a gas flow that externally surrounds a linear or curtain-shaped liquid flow that flows downward from the small holes. This results in the formation of a thin coating film in a short time and reduces the consumption of liquid and coating nonuniformities.
Abstract:
Disclosed is a new and improved apparatus primarily developed for use in dispensing powder to a media surface comprising a mounting means, a hopper tube, a porous hopper feed roller, a vortex chamber, a plurality of two primary air manifolds, and a plurality of two air bars. The hopper tube contains the porous hopper feed roller in rotatable manner. The porous hopper feed roller controls the quantity of powdered particulate material being discharged into the vortex chamber. A variable speed motor is provided and provides for 1/2 to 25 RPM rotational speed of the porous hopper feed roller. The vortex chamber receives the desired quantity of powdered particulate material from the hopper tube. The vortex chamber has an air pressure receipt means creating a vortex of rotating air within the vortex chamber. The vortex of rotating air within the vortex chamber receives the powdered particulate material from the hopper tube. The vortex chamber has an air pressure discharge means. A plurality of two primary air manifolds are provided receiving a measured amount of air pressure from an outside air pressure source. A plurality of two longitudinal air bars are provided.
Abstract:
A method and apparatus are described for coating a substrate such as glass with a powder such as a compound that can be decomposed by heat. The method comprises the steps of forming a sheet of powder suspended in a gas moving toward the substrate to be coated, homogenizing the mixture of powder and gas by creating turbulences in it, and accelerating the sheet in the direction of the substrate with flowing gas having greater velocity than that of the sheet. This method and the apparatus which implements it are particularly useful in the manufacture of glass coated with a film such as metal oxide.