# Patent

## Title
Agitator assembly with scrub brush for a fabric treating appliance

## Abstract

A fabric treating appliance having an agitator assembly comprising a base and a tower extending upwardly from the base and terminating in an upper portion with an opening. A centrifugally actuated dispensing cup located within the upper portion and fluidly coupled to the opening. The agitator includes a scrub brush that can be mounted to the upper portion.

## Background
BACKGROUND OF THE INVENTION
Fabric treating appliances typically include a clothes mover, such as an agitator, that imparts mechanical energy to the laundry load, directly by contact between the laundry and the clothes mover or indirectly through movement of the water. In a vertical axis fabric treating appliance, such as a washing machine, an agitator can also serve as a centrifugally activated treating chemistry dispenser at a designated point during a programmed cycle of operation. Prior art agitators have a wash additive dispenser in the form of a dispensing cup, in an upper end of an agitator, capable of receiving, containing and centrifugally dispensing the wash additive liquid, generally a fabric softener. The cup is located within the upper end of the agitator and in which a fill opening is provided for filling the cup.
SUMMARY
One aspect of the invention is an agitator assembly for a fabric treating appliance comprised of a base, a tower extending upwardly from the base and terminating in an upper end, at least one vane provided on the base, a cap removably mounted to the upper end and defining a treating chemistry reservoir, and a scrub brush located on the cap.
Another aspect of the invention is an agitator assembly for a fabric treating appliance comprised of a base, an upwardly extending tower containing an opening and a centrifugally actuated dispensing cup located within the upper portion of the tower and fluidly coupled to the opening, at least one vane provided on the base or tower, and a perforated scrubbing surface, provided on the upper portion overlying the opening, of the tower. The cap is releasably mounted to the upper portion and the scrub brush and has a pass through passage that is fluidly coupled to the opening of the tower.
Another aspect of the invention is an agitator assembly for a fabric treating appliance comprised of a base, a tower extending upwardly from the base and terminating in an upper end, at least one vane provided on the base, a cap with a top and a bottom, and a scrub brush located on the bottom of the cap. The cap is removably mounted to the tower and when the cap is mounted to the tower, the bottom of the cap confronts the upper end of the tower and the scrub brush is located between the upper end and the bottom and is hidden from view from an exterior of the agitator assembly.
Another aspect of the invention is an agitator assembly for a fabric treating appliance comprised of a base, a tower extending upwardly from the base and terminating in an upper end, at least one vane provided on the base, a scrubbing surface located on the upper end, a cap removably mounted to the upper end and overlying the scrubbing surface when the cap is mounted to the upper end, and a scrub brush located on the cap. When the cap is removed from the upper end, the scrubbing surface is exposed and a fabric item can be placed on the scrubbing surface and the scrubbed with the scrub brush.
Another aspect of the invention is an agitator assembly for a fabric treating appliance comprised of a base, a tower extending upwardly from the base and terminating in an upper end, at least one vane provided on the base, a cap removably mounted to the upper end, a scrub brush located on the cap, and a centrifugally actuated dispensing cup provided in the upper end of the tower.



BRIEF DESCRIPTION OF THE DRAWINGS
In the drawings:
FIG. 1 is a schematic sectional view of a fabric treating appliance in the form of a washing machine having an agitator according to one embodiment of the invention.
FIG. 2 is a perspective view of the agitator assembly of FIG. 1 with a cap removed from the agitator to reveal a scrub brush and a scrubbing surface.
FIG. 3 is a schematic cross-sectional view of an agitator assembly of FIG. 2 with a cap mounted according to an embodiment of the invention.
FIG. 4 is a perspective view of the agitator assembly with a cap mounted onto the assembly of FIG. 1 according to another embodiment of the invention.



DESCRIPTION
FIG. 1 is a schematic view of a fabric treating appliance in the form of a vertical axis washing machine 10 according to an embodiment of the invention. The washing machine 10 of the illustrated embodiment can include a cabinet 12 for housing the operational parts of the machine, together with a hinged lid 18. A console 21 having control panel 20 which includes the operating controls 22 for the washer is illustrated on the upper, rear of the cabinet 12, but can be located elsewhere. Housed within the cabinet 12 is a wash tub 26, a basket or drum 28, and an agitator assembly 30. The tub 26 holds the wash liquid that is used in the operation of the washing machine 10. The basket or drum 28 holds the laundry during operation of the washing machine 10. The basket or drum 28 can be thought of as defining a treating chamber 33 in which the laundry is treated. However, the tub 26 can also be thought of as defining the treating chamber 33, too.
Referring now to FIG. 2, which is a perspective view of an agitator assembly 30 from FIG. 1. The agitator assembly 30 includes a base 32 and a tower 34 extending upwardly from the base 32. One or more vanes 36 can be provided on one or both of the base 32 and tower 34.
The agitator assembly 30 has a removable cap 50, which is releaseably mounted to the upper portion of tower 34. The cap 50 can include scrub brush 54 at one end, and is threadably, snappably, or otherwise removably provided to the upper portion of agitator assembly 30. Cap 50, including scrub brush 54, can be provided to the upper portion of agitator assembly 30 such that the scrub brush 54 confronts the upper portion or the optional scrubbing surface 52 when the cap 50 is mounted. Alternatively, cap 50, including scrub brush 54, can be provided to the upper portion of agitator assembly 30 such that scrub brush 54 is hidden from view when cap 50 is mounted to the upper portion of agitator assembly 30.
Scrub brush 54 can be comprised of a plurality of bristles 58 formed in a variety of shapes and sizes or all of a singular shape and size, which define the bristles 58 for the scrub brush 54. The bristles 58 can be made of materials including but not limited to rubber, metal, silicon, nylon and other polymeric materials or mixtures thereof or any other material known to those skilled in the art to be safe and effective to use on fabrics and with treatment chemistries. For example, the bristles 58 can be made of SantopreneTM by Advanced Elastomer Systems, L.P., of Akron, Ohio In this example, the center portion of scrub brush 54 is comprised of a plurality of bristles 58 that are longer and more flexible than the bristles 58 in the perimeter portion. The perimeter portion bristles 58 can be shorter, thicker, and tube-like when compared to the center portion bristles 58. The arrangement and type of the plurality of bristles 58 is illustrated by example only and the arrangement or design of the bristles 58 of scrub brush 54 are not limited by this example.
The upper portion of tower 34 of agitator assembly 30 terminates in an optional scrubbing surface 52. The scrubbing surface 52 can be perforated to provide for the passing of liquid through the scrubbing surface. The scrubbing surface can be comprised of a perforated material such as mesh or polymeric materials or any surface that is conducive to allowing a liquid to pass through. The perforated material or mesh can be made of plastic, metal or any other suitable material. The scrubbing surface 52 can be supported by a frame 59 that is in spaced relationship to the terminal end of agitator assembly 30. The terminal end of agitator assembly 30 comprises a liquid passage 60 located beneath the scrubbing surface 52. When cap 50 is releasably mounted to the upper portion of agitator assembly 30, a liquid pass through opening 70 (FIG. 4) can be fluidly coupled to the liquid passage 60 through dispensing opening 53.
FIG. 3 is a cross-sectional schematic view of the upper portion of the agitator assembly 30 with cap 50 mounted provided by example. The cap 50 can define a treating chemistry reservoir 51 fluidly coupled to a dispensing opening 53 in the scrub brush 54. The treating chemistry can be released by selectively actuating a valve 57 that opens and closes a dispensing opening in treating chemistry reservoir 51. A valve actuator button 56 can be accessible from the exterior of the cap 50 for the purposes of selectively opening and/or closing valve 57 fluidly coupled to a dispensing opening 53 of the scrub brush 54. Valve actuator button 56 can be disposed in any place on the exterior of the cap so as to be accessible by the user.
Cap 50 is provided to the upper portion of agitator assembly 30 which further comprises a centrifugally actuated dispensing cup system. Any centrifugally actuated dispensing cup system can be used in any embodiment of the present invention. The dispensing cup 80 can be fluidly coupled to the liquid passage 60 provided in the upper portion of agitator assembly 30 beneath scrubbing surface 52. The dispensing cup 80 can be fluidly coupled to an additive dispensing reservoir 84 which can be fluidly coupled to one or more dispensing holes 82 provided in the center portion end of agitator assembly 30 in the base 32 and/or tower 34 at the base of the reservoir 84.
In regards to FIG. 4, the cap 50 can additionally include a graduated dosage gauge 72, with the different dosage volumes indicated by stepped changes in the cross-sectional area of the gauge, which define rings at different heights to form varying graduated dosage levels 74. The dosage gauge 72 can be a snap-in addition to the cap 50 or integrated into the cap 50. Graduated dosage levels 74 can be specified to meet the requirements for optimal performance of the fabric treating appliance. The graduated dosage levels 74 can be designated for optimal performance of the treatment chemistry type. The terminal end of the graduated dosage gauge 72 can be provided with a liquid pass through opening 70 that is fluidly coupled via dispensing opening 53 to the liquid passage 60 located beneath the scrubbing surface 52.
Prior to initiation of a treatment cycle, a user may desire to pretreat a stain on a fabric. In one embodiment of the invention, the user can remove cap 50 from the agitator assembly 30. By pressing the button 56 on the exterior of cap 50 to actuate the valve, the user can dispense the stain treatment chemistry from the reservoir, through a dispensing opening 53, to the scrub brush 54. The user can place the fabric area to be treated on the scrubbing surface 52 and using any method of manual force, for example a scrubbing action, apply the treatment chemistry to the fabric in a manner appropriate for the type of fabric being treated. The center portion bristles 58 of scrub brush 54 can be finger-like and intended for use on delicate fabrics while still offering some mechanical scrubbing action. The perimeter portion bristles 58 of scrub brush 54 can be intended for use on more rugged fabrics or more difficult to remove stains that require more downward force and increased mechanical action. The tube shape of the perimeter portion bristles 58 can offer increased surface contact from the inside and outside of the tube structure and increased rigidity from increased wall thickness and reduction in height. The treatment chemistry applied then flows through the scrubbing surface 52, into the upper portion of the agitator assembly 30, through liquid passage 60 and into the dispensing cup 80, or alternatively, straight through into the treating chamber 33. The cap 50 can then be returned to the agitator assembly 30 upon completion of stain pretreatment.
A wash additive liquid can be poured into dispensing cup 80 via the liquid pass through opening 70 and dispensing opening 53 in cap 50 prior to the initiation of a treatment cycle. In another embodiment, a wash additive liquid can be poured into graduated dosage gauge 72, through liquid pass through opening 70 in cap 50 to dispensing opening 53 and into dispensing cup 80 prior to the initiation of a treatment cycle. A highly viscous additive liquid will be slow to pass through dosage gauge 72 allowing a user to measure the amount of additive liquid using the graduated dosage levels 74 before the additive liquid passes through the liquid pass through opening 70 and dispensing opening 53 in cap 50 and into the dispensing cup 80 via the liquid passage 60.
By an example embodiment, typically, in a centrifugally actuated dispensing system, the wash additive liquid remains in the dispensing cup 80 during the wash phase of the treatment cycle selected by the user. During a spin phase of the treatment cycle prior to the rinse phase, when the agitator assembly 30 is spinning, the liquid is centrifugally forced upwardly along the interior walls and out of the dispensing cup 80 and collected in the additive dispensing reservoir 84. Once the spin phase has completed, the liquid drains from the bottom of the reservoir 84 through one or more dispensing holes 82 and into the wash bath.
While the invention has been specifically described in connection with certain specific embodiments thereof, it is to be understood that this is by way of illustration and not of limitation, and the scope of the appended claims should be construed as broadly as the prior art will permit. It should also be noted that all elements of all of the claims can be combined with each other in any possible combination, even if the combinations have not been expressly claimed.

## Claims

1. An agitator assembly for a fabric treating appliance comprising:
a base;
a tower extending upwardly from the base and terminating in an upper portion with an opening;
a centrifugally actuated dispensing cup located within the upper portion and fluidly coupled to the opening;
at least one vane provided on at least one of the base and tower;
a perforated scrubbing surface provided on the upper portion and overlying the opening;
a cap releasably mounted to the upper portion and having a scrub brush and a pass through opening; and
wherein when the cap is mounted to the upper portion, the scrub brush confronts the scrubbing surface.

2. The agitator assembly of claim 1 wherein the cap defines a treating chemistry reservoir.

3. The agitator assembly of claim 2 wherein the cap has at least one dispensing opening fluidly coupling the treating chemistry reservoir to the scrub brush.

4. The agitator assembly of claim 3 wherein the cap further comprises a valve selectively opening/closing the dispensing opening.

5. The agitator assembly of claim 4 wherein the cap further comprises a valve actuator selectively actuating the valve.

6. The agitator assembly of claim 5 wherein the valve actuator comprises a button accessible from the exterior of the cap.

7. The agitator assembly of claim 1 wherein the cap is threadably mounted to the upper portion.

8. The agitator assembly of claim 1 wherein when the cap is mounted to the upper portion, the scrub brush is hidden from view from an exterior of the agitator assembly.

9. An agitator assembly for a fabric treating appliance comprising:
a base;
a tower extending upwardly from the base and terminating in an upper end;
at least one vane located on the base;
a cap having a top and a bottom; and
a scrub brush located on the bottom of the cap;
wherein the cap is removably mounted to the tower and when the cap is mounted to the tower, the bottom of the cap confronts the upper end of the tower and the scrub brush is located between the upper end and the bottom and is hidden from view from an exterior of the agitator assembly.

10. The agitator assembly of claim 9 wherein the cap is threadably mounted to the upper end.

11. An agitator assembly for a fabric treating appliance comprising:
a base;
a tower extending upwardly from the base and terminating in an upper end;
at least one vane located on the base;
a scrubbing surface located on the upper end;
a cap removably mounted to the upper end and overlying the scrubbing surface when the cap is mounted to the upper end; and
a scrub brush located on the cap;
whereby when the cap is removed from the upper end, the scrubbing surface is exposed and a fabric item can be placed on the scrubbing surface and scrubbed with the scrub brush.

12. The agitator assembly of claim 11 wherein the scrubbing surface is perforated.

13. The agitator assembly of claim 12 wherein the scrubbing surface comprises a mesh.

14. The agitator assembly of claim 13 further comprising a frame supporting the mesh is in spaced relationship to the upper end.

15. The agitator assembly of claim 11 wherein the upper end comprises a liquid passage located beneath the scrubbing surface.

16. The agitator assembly of claim 11 wherein the scrubbing brush confronts the scrubbing surface when the cap is mounted to the upper end.

17. An agitator assembly for a fabric treating appliance comprising:
a base;
a tower extending upwardly from the base and terminating in an upper end;
at least one vane located on the base;
a cap removably mounted to the upper end;
a scrub brush located on the cap; and
a centrifugally actuated dispensing cup provided in the upper end of the tower.

18. The agitator assembly of claim 17 wherein the cap comprises a pass through opening fluidly coupled to the dispensing cup.

19. An agitator assembly for a fabric treating appliance comprising:
a base;
a tower extending upwardly from the base and terminating in an upper end;
at least one vane located on the base;
a cap removably mounted to the upper end and defining a treating chemistry reservoir; and
a scrub brush located on the cap.

20. The agitator assembly of claim 19 wherein the cap has at least one dispensing opening fluidly coupling the treating chemistry reservoir to the scrub brush.

21. The agitator assembly of claim 20 wherein the cap further comprises a valve selectively opening/closing the dispensing opening.

22. The agitator assembly of claim 21 wherein the cap further comprises a valve actuator selectively actuating the valve.

23. The agitator assembly of claim 22 wherein the valve actuator comprises a button accessible from the exterior of the cap.