Patent application number | Description | Published |
20090236449 | High efficiency, multiple throat fluidic oscillator - An improved fluidic oscillator, that operates on a pressurized liquid flowing through the oscillator to generate a liquid jet that flows into the surrounding gaseous environment to form of an oscillating spray of liquid droplets, includes: a member into which is fabricated a two-portion, flow channel, with its first portion configured so as to create the flow phenomena in the member that yields the spray's oscillating nature, and its second portion includes a splitter that is used to divide the jet into component sprays whose centerlines assume a specified yaw or pitch angle relative to the centerline of the oscillator. | 09-24-2009 |
20090324434 | WASHER PUMP - An enhanced pump assembly includes an impeller and volute casing designed to provide high operating pressures (“P”) and flow rates (“Q”) with low energy usage. The impeller has a central shaft carrying radially projecting curved primary vanes, and each primary vane also has a twist in the radial direction. Secondary impeller vanes define triangular connecting fillet-like wall segments connecting each primary vane to the impeller shaft. The casing of the pump has a slight spiral deviation so that the pump chamber's radial sidewall flares away from the swept area of the impeller's vanes to define a fluid outlet that contributes to higher P-Q performance, especially when pumping colder fluids. | 12-31-2009 |
20100078508 | Irrigation Nozzle Assembly with Fluidic insert Retention structure and method - A sprinkler assembly includes a sprinkler housing including at least one fluidic- circuit-receiving port carrying a fluidic insert configured to receive irrigation fluid and project the irrigation fluid in a desired spray pattern. The fluidic insert is held precisely in place by a retention ring adapted for insertion into the housing's interior lumen to provide a snap or friction fit within the housing while engaging and retaining the fluidic insert against impact forces from inrushing fluid surge. The retention ring fits entirely within the sprinkler assembly's housing or package, and is economically molded as a one-piece component, and does not have any effect on external appearance of the sprinkler assembly or any adverse effect on the fluidic insert's spray pattern. | 04-01-2010 |
20100090036 | Fluidic circuit with bump features for improving uniform distribution of fluidic sprays - A fluidic circuit or oscillator is provided with one or more small raised bumps or protrusions near the outlet or exhaust of a fluidic circuit to alter the spray pattern by re-distributing heavy areas of flow, resulting in a more uniform spray. The fluidic oscillator enclosure operates on a pressurized liquid flowing through the oscillator to generate a liquid jet that flows from said oscillator and into a surrounding environment to form an oscillating spray of liquid droplets, where the oscillator generates a stream of liquid droplets. The outlet or throat structure includes at least one bump or protuberance configured to project into the oscillating spray. | 04-15-2010 |
20100276521 | Nozzle and Fluidic Circuit adapted for use with cold fluids, viscous fluids or fluids under light pressure - A fluid spraying or nozzle system adapted for use with cold fluids, viscous fluids or fluids under light pressure includes a fluidic oscillator having a power nozzle and an oscillation chamber coupled to the power nozzle for issuing a jet of fluid into the oscillation chamber and an outlet aperture spraying a jet of fluid into ambient space. The oscillator's walls define an oscillation inducing interaction region causing the jet of fluid to rhythmically sweep back and forth between the sidewalls in the oscillation chamber. The oscillation inducing interaction region defines an outlet throat width which is adapted to work with the power nozzle's width and an a bell-shaped feed that spreads the fluid jet as it leaves the power nozzle, so that the interaction region and feedback channels are quickly filled with fluid at a low pressure and the fluidic oscillator is activated to generate a desired fan pattern of fluid spray. | 11-04-2010 |
20110061692 | FULL COVERAGE FLUIDIC OSCILLATOR WITH AUTOMATED CLEANING SYSTEM AND METHOD - A full coverage fluidic oscillator ( | 03-17-2011 |
20110089250 | Irrigation Spray Nozzles for Rectangular Patterns - An inexpensive, durable and efficient irrigation nozzle assembly is adapted to generate a specialized rectangular spray in a 3-jet fluidic circuit which generates a substantially planar rectangular spray from a confluence of three jets. The 3-jet geometry circuit has selected floor & taper features configured to create a customizable rectangular or triangular spray pattern. Depending on the throw desired, the nozzle assembly of the present invention can be configured with a second fluidic circuit to generate a flat fan to obtain various aspect ratios in a rectangular spray. | 04-21-2011 |
20110233301 | Rain can style showerhead assembly incorporating eddy filter for flow conditioning in fluidic circuits - A fluidic oscillator adapted for use in a showerhead or nozzle assembly includes an eddy filter structure which reduces the adverse effects of fluid supply turbulence on the fluidic oscillator's spraying performance. A nozzle or rain can style showerhead assembly includes a water chamber or manifold which receives water via a central inlet fitting. Water entering the water chamber or manifold flows turbulently into and through the manifold and is expelled under pressure through a plurality of nozzles which are configured as specially adapted fluidic inserts. | 09-29-2011 |
20120055560 | FLUID STREAM POWERED PULSE GENERATING FLUIDIC OSCILLATOR - A fluidic device which produces fluid pulses having a selected pulse repetition frequency, pulse duration, pulse peak pressure and pulse peak flow rate includes first, second and third fluid flow controlling channels or lumens which converge in a junction, defining a “Y” configuration having a base leg and right and left diverging arms. The first leg portion has a fluid input and terminates downstream at the Y junction of the base and the two diverging arms. The first leg has converging walls which reduce the cross sectional area of the flow to thereby increase the fluid velocity to make a fluid jet. The second or right leg, begins at the Y junction and terminates distally in an enclosed, fluid-tight container having a selected blind volume. The third, or left leg, begins at the Y junction and terminates distally in a fluid outlet passage having a selected cross-sectional area. | 03-08-2012 |
20130045095 | WASHER PUMP - An improved automotive pump assembly includes a volute pumping chamber configured to operably contain a rotatable impeller which, when driven, draws fluid into a fluid inlet and pumps the fluid to and through a fluid outlet. The volute chamber has an exterior sidewall with a constant internal first radius over a first sidewall portion and transitions to a second sidewall portion of increasing radius. The chamber's second sidewall portion defines a first end at a sidewall transition point tangent to the constant radius sidewall segment to define a second end which is tangent to the volute chamber's fluid outlet with a second radius that is greater than the first radius. | 02-21-2013 |
20140263742 | Cup-shaped Fluidic Circuit with Alignment Tabs, Nozzle Assembly and Method - An automatically alignable conformal, cup-shaped fluidic nozzle engineered to generate an oscillating spray is configured as a cylindrical cup having a substantially open proximal end and a substantially closed distal end wall with a centrally located power nozzle defined therein and between first and second distally projecting alignment tabs or wall segments. Optionally, the fluidic circuit's oscillation inducing geometry is molded directly into the sealing post's distal surface and a one-piece cup provides the discharge orifice. | 09-18-2014 |
20140291423 | Cup-shaped Nozzle Assembly with Integral Filter Structure - A filtering nozzle assembly or spray head has a conformal nozzle component engineered to generate a filtered spray and configured as a small cylindrical member having a substantially open proximal end and a substantially closed distal end wall with a centrally located discharge orifice defined therein. Optionally, cup-shaped filtered orifice defining member also includes a fluidic circuit's oscillation inducing geometry molded into the cup or directly into the distal surface of a sealing post and the one-piece filter cup provides the fluidic circuit's discharge orifice. | 10-02-2014 |
20140299672 | Method and Fluidic Apparatus for Generating Pulsed and Oscillating Air Flow for Surface Cleaning and Sweeping - An oscillating or pulsing fluid stream, or flow, is produced from a flow of pressurized air by fluidic apparatus in a device configured for use in surface cleaning, sweeping, lawn care applications, and the like. A converging nozzle assembly defining a tapered internal lumen having a smooth narrowing profile is configured to generate at a power nozzle a high velocity stream with minimal pressure drop. Downstream of the power nozzle, first and second control ports are in fluid communication with the high velocity stream and with each other via an inertance loop having a lumen of selected cross sectional area and length. The varying air flow is directed through an outlet chamber shaped to produce an oscillating or a pulsating flow. | 10-09-2014 |