Low speed pulsating showerhead

• US 8,366,024 B2
• Filed: 12/26/2007
• Issued: 02/05/2013
• Est. Priority Date: 12/28/2006
• Status: Active Grant

• Current Assignee: Water Pik Incorporated (Church & Dwight Company Incorporated)
• Original Assignee: Water Pik Incorporated (Church & Dwight Company Incorporated)
• Inventors: Leber, Leland C.
• Primary Examiner(s): KIM, CHRISTOPHER S
• Application Number:
  US11/964,670
• Publication Number:
  US 20080156897A1
• Time in Patent Office: 1,868 Days
• Field of Search: 239237-242, 239380-383, 239482-484, 239/487, 239/488, 239491-497, 239/533.15, 239556-564
• US Class Current: 239/381
• CPC Class Codes: B05B 1/18 Roses; Shower heads with means for adding soap or the like E03C1/046; jet regulators E03C1/08
• CPC Class Codes: B05B 3/04 driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet B05B3/023 takes precedence

Abstract

A showerhead may include a housing, a jet disk, a turbine, and a shutter. The housing may include a fluid inlet, at least one fluid outlet, and a chamber in fluid communication with the inlet and one or more outlets. The jet disk, turbine, and shutter may be placed in the cavity. The shutter may include at least one opening. The shutter may selectively cover and uncover fluid outlets, thus selectively fluidly connecting the fluid outlets with the chamber. Water flowing through the housing causes the turbine to spin. As the turbine spins, the shutter rotates at a slower speed than the turbine to produce a periodic interruption of water flow through the outlets by covering and uncovering the outlets as the shutter rotates within the housing.

Claims

1. A showerhead, comprising:

a housing defining a chamber in fluid communication with a fluid inlet and at least one fluid outlet, wherein the housing further defines a first engagement feature;

a turbine received within the chamber; and

a shutter received within the chamber, wherein the shutter defines a second engagement feature and the shutter is operatively associated with the turbine, wherein

rotation of the turbine causes rotation of the shutter;

the direct engagement of the first engagement feature with the second engagement feature causes a rotation rate of the shutter to be less than a rotation rate of the turbine; and

as the shutter rotates, the shutter fluidly connects and disconnects the fluid inlet and the at least one fluid outlet.

2. The showerhead of claim 1, wherein the first engagement feature comprises at least one gear tooth.

3. The showerhead of claim 1, wherein the second engagement feature comprises at least one gear tooth.

4. The showerhead of claim 1, wherein the first engagement feature comprises a first number of gear teeth, and the second engagement feature comprises a second number of gear teeth.

5. The showerhead of claim 4, wherein the first number is greater than the second number.

6. The showerhead of claim 1, wherein the shutter comprises a substantially circular disk, and the second engagement feature is positioned proximate a periphery of the disk.

7. The showerhead of claim 1, wherein

the shutter includes at least one opening and at least one solid portion;

the at least one opening fluidly connects the fluid inlet and the at least one fluid outlet and

the at least one solid portion disconnects the fluid inlet and the at least one fluid outlet.

8. The showerhead of claim 1, wherein the at least one fluid outlet comprises a first row of outlets and a second row of outlets.

9. The showerhead of claim 8, wherein

the shutter includes a first opening, a second opening, and a solid portion;

the first opening fluidly connects the first row of outlets with the fluid inlet;

the second opening fluidly connects the second row of outlets with the fluid inlet; and

the solid portion disconnects the first row of outlets and the second row of outlets with the fluid inlet.

10. The showerhead of claim 1, wherein the turbine and the shutter rotate in opposite directions.

11. The showerhead of claim 1, wherein the turbine and the shutter rotate in the same direction.

12. The showerhead of claim 1, wherein the rotation rate of the shutter is no greater than approximately 1/15^th of the rotation rate of the turbine.

13. The showerhead of claim 1, wherein the turbine includes an eccentric cam, and the shutter includes an opening for receiving the cam.

14. The showerhead of claim 1, wherein a center of the shutter moves in a substantially circular path around a center of the turbine.

15. The showerhead of claim 1, further comprising a jet disk operatively associated with the turbine, and the jet disk includes at least one jet.

16. The showerhead of claim 1, wherein

the first engagement feature comprises an integer number of engagement features incorporated within an inner surface of the housing defining the chamber;

the shutter comprises a disk and the second engagement feature comprises an integer number of engagement features distributed around a periphery of the disk;

the integer number of the first engagement features is different than the integer number of the second engagement features; and

rotation of the shutter selectively engages the second engagement features with the first engagement features.

17. The showerhead of claim 16, wherein the number of second engagement features is less than the number of first engagement features.

18. The showerhead of claim 17, wherein the rate of rotation of the shutter is the rate of rotation of the turbine multiplied by a speed reduction factor.

19. The showerhead of claim 18, wherein the speed reduction factor is the difference between the number of first engagement features and the number of second engagement features divided by the number of second engagement features.

20. The showerhead of claim 4, wherein the second number is greater than the first number.