System for introducing pulsation into a fluid output for an oral care appliance

Patent metadata

Field	Value
Publication number	US-10642948-B2
Application number	US-201515117845-A
Country	US
Kind code	B2
Filing date	Feb 9, 2015
Priority date	Mar 5, 2014
Publication date	May 5, 2020
Grant date	May 5, 2020

Abstract

The appliance includes a jet source of fluid, and a nozzle assembly through which the fluid is directed and then out for application to the teeth. A flow interrupter assembly is mounted within the nozzle assembly, such that the interrupter assembly is responsive to the fluid flow to produce momentary successive interruptions of the fluid flow by the action of the interrupter assembly moving from an original position to a flow interrupting position and then returning to its original position as the flow decreases and then is interrupted, due to the fluid flow itself, resulting in a cyclical perturbation in the fluid flow from the nozzle, by flow action alone.

First claim

What is claimed is:

1. An oral care appliance for cleaning interproximal areas of teeth, comprising:
a fluid jet appliance for producing a fluid jet flow;
a nozzle assembly for the fluid jet appliance for directing the fluid jet flow to an exit opening from the nozzle assembly; and
a liquid flow interrupter assembly including a hydrofoil vane within the nozzle assembly, the hydrofoil vane supported by springs which extend from opposing sides of the hydrofoil vane to opposing channels within the nozzle assembly, and the liquid flow interrupter assembly is supported by the springs within the nozzle assembly, wherein the liquid flow interrupter assembly is deflected from an original position by the fluid jet flow through a nozzle of the nozzle assembly to interrupt the fluid jet flow momentarily and then return to said original position as the fluid jet flow decreases, introducing a cyclical perturbation in the fluid jet flow, producing a series of fluid pulses from the exit opening.

2. The appliance of claim 1 , wherein the hydrofoil vane is so configured and supported by the springs such that the hydrofoil vane moves in a direction of the fluid jet flow from the original position and then back in an opposing direction as the fluid jet flow decreases and is then interrupted.

3. The appliance of claim 1 , wherein the hydrofoil vane is so configured and supported by said springs such that the hydrofoil vane moves back and forth within the nozzle assembly along a common axis of the springs, approximately 90° to a direction of the fluid jet flow past the hydrofoil vane as the fluid jet flow changes.

4. The appliance of claim 3 , wherein the hydrofoil vane is configured and supported by said springs such that the hydrofoil vane oscillates rotationally about the springs or about an axis that is 90° to the common axis of the springs.

5. An oral care appliance for cleaning interproximal areas of teeth, comprising:
a fluid jet appliance for producing a fluid jet flow;
a nozzle assembly for the fluid jet appliance for directing the fluid jet flow to an exit opening from the nozzle assembly; and
a liquid flow interrupter assembly including a bladder assembly, comprising inlet and outlet portions and successive stretchable portions and alternating stiff rings arranged between the inlet and outlet portions, wherein liquid flow at the inlet portion produces a circular zone of the fluid jet flow in successive stretchable portions of the bladder assembly, wherein as the liquid flow enters the bladder assembly a pressure in a first stretchable portion of the successive stretchable portion of the bladder assembly increases, resulting in an outward movement of the first stretchable portion of the bladder assembly, as the liquid flow continues to a second stretchable portion, the pressure in the first stretchable portion decreases, resulting in a pulsating liquid output at the outlet portion the liquid flow interrupter assembly supported by a support member within the nozzle assembly, wherein the interrupter assembly is deflected from an original position by the fluid jet flow through a nozzle of the nozzle assembly to interrupt the fluid jet flow momentarily and then return to said original position as the fluid jet flow decreases, introducing a cyclical perturbation in the fluid jet flow, producing a series of fluid pulses from the exit opening.

Assignees

• Koninklijke Philips Nv

Inventors

• Goddard Gregory Russ
• Balakrishnan Anandh
• Chang Yu-Wen
• Ferrier John Theodore

Classifications

• A61C1/0061

  Air and water supply systems; Valves specially adapted therefor (A61C1/052 takes precedence; rinsing or air-blowing devices A61C17/02) · CPC title

• B05B1/086

  with a resiliently deformable element, e.g. sleeve · CPC title

• A61C17/02 Primary

  Rinsing or air-blowing devices, e.g. using fluid jets {or comprising liquid medication} (combined with receptacles for spittle A61C17/14; combined with power-driven cleaning or polishing devices A61C17/16) · CPC title

• G06F30/20

  Design optimisation, verification or simulation (optimisation, verification or simulation of circuit designs G06F30/30) · CPC title

• A61C17/028 Primary

  with intermittent liquid flow · CPC title