Automatic laundry aid dispenser for washing machine

Information

  • Patent Grant
  • 6434977
  • Patent Number
    6,434,977
  • Date Filed
    Friday, October 6, 2000
    24 years ago
  • Date Issued
    Tuesday, August 20, 2002
    22 years ago
Abstract
A laundry aid dispenser for a washing machine allows simple introduction of laundry aids into cups whose volumes are visible to the user and held within the console of the washing machine. A vertically oriented valve and flush chamber arrangement allows for the removal of the cups and the dispensing of viscous laundry aids such as fabric softener with reduced accumulation and buildup. The configuration also allows easy access to critical channels and parts of the dispenser as well as flexible electronic control of the dispensing times. Color-coding, keying and other indicia simplify the consumer's identification of the proper laundry aid for each cup.
Description




CROSS-REFERENCE TO RELATED APPLICATIONS




STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT




BACKGROUND OF THE INVENTION




The present invention relates to clothes washing machines and, in particular, to a dispenser for such washing machines dispensing laundry aids such as bleach, softener, bluing or detergent.




Clothes washing machines suitable for residential or commercial use may provide a washtub into which clothes are loaded for agitation with water and detergent. In top loading washing machines, the washtub opens upwardly under a lid through which the clothes may be inserted. Front loading washing machines use a front opening washtub sealed by a front opening door through which clothes are placed. Both types of machines may have a console extending upward at the rear edge of the top surface of the machine. Washing machine controls, such as the cycle timer, water temperature, and fill height controls, may be located on this console for easy access.




Detergent may be added to the washtub at the beginning of the wash cycle, however, this is typically not the ideal time to add other laundry aids including bleach which may interact with the detergent decreasing its effectiveness or may be unnecessarily diluted and lost. Attending to the introduction of laundry aids at different times in the wash cycle is inconvenient to the consumer. Thus, there is considerable interest in dispensing systems that automatically add laundry aids to the washtub at different times during the wash cycle.




Some laundry aids, in particular fabric softener and detergent, are relatively viscous and have a tendency to clog simple valve systems. Accordingly, such as fabric softener may be dispensed through valve-less mechanisms. Fabric softener, for example, may be dispensed from a container attached to the agitator of the washtub. During the spin cycle, the fabric softener is released by centrifugal force which causes the fabric softener to rise up over the lip of its container. The container is made removable so that periodically it may be washed to remove residue resulting from incomplete release of the softener which returns to the bottom of the container at the end of the spin cycle.




Such a dispenser is only designed for top loading washing machines, and only suitable for laundry aids that may be added during the spin cycle. The location of this type of dispenser is inconvenient and consequently the consumer may overlook filling it.




Some of these problems are eliminated by the invention disclosed in U.S. Pat. No. 4,323,170 to Ikeda. The '170 patent teaches a dispenser that opens from the console of the washing machine. Valves are eliminated by the use of a “dump-cup” which receives laundry aids through a door in the console and tips to pour the laundry aids into the washtub. Tipping of the cup is controlled by the cycle timer providing flexibility in timing the introduction of the laundry aid into the wash. In the dumping position, a water stream may flush residue from the dump cup to minimize the build-up of sticky residue.




In order for the dump cup to be easily tipped and for its motion to be unobstructed, the dump cup is positioned near the bottom of the console and the laundry aids introduced by a vertically extending chute or funnel. Thus removed from the sight of the consumer, the dump cup may be easily overfilled if the consumer does not carefully pre-measure the laundry aid or if the consumer forgets that the dump cup has been previously filled. The dump-cup is shallow to minimize the amount of tipping necessary to empty it. This shallowness restricts the capacity of the dump cup for reasonably available areas within the console.




BRIEF SUMMARY OF THE INVENTION




The present invention provides a system for release of a variety of laundry aids using an electronic valve system. When used as part of a console mounted dispenser, the valve system allows more conveniently sized accumulator cups whose interior volume may be viewed as they are filled by the consumer, eliminating the need for pre-measuring of the laundry aid. The valve system also allows a more compact installation of multiple accumulator cups next to each other, even in the console.




The valve system of the present invention also makes it possible for the cups to be removed for inspection and cleaning, if desired, and by allowing dispensing to occur from a lowermost drainage point in the cup, permits more complete drainage of that cup, reducing waste and build-up. The configuration of the valve system components permits self-cleaning of critical valve elements with a flushing water stream, if desired.




Specifically then, the present invention provides for a washing machine having a housing with an upper surface and a washtub positioned within the housing to receive clothing to be washed. A console extending upward from the upper surface of the housing includes a door and a laundry aid chamber is positioned within the console behind the door to be revealed when the door is open. A channel leads to the washtub and at least one electrically actuated valve is positioned between the laundry aid chamber and the channel, the valve operates, when closed, to cause the accumulation of introduced laundry aid in the laundry aid chamber as visible by a user through the door and when opened, facing the laundry aid accumulated in the laundry aid chamber into the channel.




Thus it is one object of the invention to permit convenient introduction of a laundry aid into a console-mounted dispenser without pre-measuring. Use of a valve, rather than a tipping of the accumulator cup, allows the dispensing cup to be sized and located so that its interior is visible to the consumer as a guide to proper filling.




The laundry aid chamber may include an outer chamber wall receiving at least one removable cup having an upper open end and a lower dispensing orifice. The cup may fit within the outer chamber wall so that a dispensing orifice engages with the electrically actuated valve. The electrically actuated valve communicates with the dispensing orifice to control the flow of laundry placed in the cup.




It is thus another object of the invention to provide for accumulator cups that may yet be removable for cleaning and yet are safely contained within the outer chamber walls for support, stability and the capture of spills and the like.




The valve may provide a valve head movable vertically from an upward closed position to a lower open position. The valve head may abut a bottom surface of the dispensing orifice to stop the flow therefrom when in the upwardly closed position. The laundry aid chamber and the removable cup may include interengaging detent surfaces holding the cup in place within the laundry aid chamber against the predetermined upward force.




It is thus another object of the invention to provide for a valve that allows easy removal of the cups and upon such removal, a cleaning of the valve seat of the valve such as an integral part of the cup.




The washing machine may include a second electrically actuated valve, and a second removable cup, the second removable cup also having an upper open end in a lower dispensing orifice. The second removable cup may fit within the laundry aid chamber adjacent to the first removable cup so that the dispensing orifice of the second removable cup engages with the second electrically actuated valve and wherein the second electrically actuated valve communicates with the dispensing orifice of the second removable cup to control the flow of laundry aid placed in the cup to the channel.




Thus it is another object of the invention to provide a dispensing system that allows a clustering of the dispensing cups for different laundry aids at a single convenient location, for example, the console. The ability to dispense the laundry aids by valves rather than dumping allows greater flexibility in the dimensions of the dispensing cups.




The cups may be of different colors and may include keys preventing engagement of the first cup with the second electrically actuated valve and vice versa. The cups may include graduations and may have different volumes related in ratio to a volumetric ratio between typical usages of predetermined laundry aids intended for the cups. The underside of the door may be exposed when it is open and may include indicia indicating the proper laundry aid for each cup.




Thus it is another object of the invention to identify the laundry aids to be placed in the adjacent cups and to assist the user in properly filling the cups both in type and amount of laundry aid.




The washing machine may include a bypass passage communicating between the outer chamber wall and the channel to the washtub and the cup may include at least one vertical wall fitting within the outer chamber wall that provides a chute between the vertical wall and the corresponding outer chamber wall and wherein the cup provides an overflow passage such as may be an orifice within the vertical wall of the cup communicating with the chute.




Thus it is another object of the invention to contain spills and overflow if the consumer overfills the dispensing cup.




The laundry aid chamber may include a flush channel communicating with a source of water and passing the water in the flush channel between the bottom surface of the orifice of the dispensing cup and the valve head of the electrically actuated valve when the valve is in the open position.




Thus it is another object of the invention to provide a simple valve mechanism that may remain free from accumulated residue of viscous laundry aids such as fabric softener.




The foregoing and other objects and advantages of the invention will appear from the following description. In this description, reference is made to the accompanying drawings, which form a part hereof, and in which there is shown by way of illustration, a preferred embodiment of the invention. Such embodiment and its particular objects and advantages do not define the scope of the invention, however, and reference must be made therefore to the claims for interpreting the scope of the invention.











BRIEF DESCRIPTION OF THE DRAWINGS





FIG. 1

is a fragmentary perspective view of a top loading washing machine suitable for use with the present invention showing a console mounted laundry aid dispenser of one embodiment of the invention and a bottle of laundry aid positioned to be introduced into the laundry aid dispenser over a spill capture region;





FIG. 2

is an enlarged fragmentary perspective view of the dispenser of

FIG. 1

with its door open such as reveals the internal volume of accumulator cups within the laundry aid dispenser chamber;





FIG. 3

is a cross-section along lines


3





3


of

FIG. 2

showing the placement of the cup within the laundry aid dispenser chamber and a drain orifice in the cup such as forms a valve seat for a vertically movable valve head position therebelow and showing a bypass channel for overflow of laundry aids;

FIG. 3

further shows laundry aid chamber graduations, a detent for holding the cup in position and key elements for preventing engagement of the cup in the wrong position;





FIG. 4

is a detailed cross-sectional view of the valve head of

FIG. 3

showing an integral boot surrounding an actuator arm of a wax motor to wholly seal the wax motor from laundry aids;





FIG. 5

is a fragmentary cross-section taken along lines


5





5


of

FIG. 2

showing the positioning of the two accumulator cups having different volumes at points along a sloping flush-channel such as removes residue from the valves when they are in their open position and assists in the transport of viscous laundry aid into the washtub;





FIG. 6

is a detail of one key of

FIG. 3

showing a ward and pin system of the key of

FIG. 3

for preventing engagement of the cups in the wrong position;





FIG. 7

is figure similar to that of

FIG. 5

showing an alternative embodiment of the laundry aid chamber holding the accumulator cups and suitable for dispensing dry laundry aids.











DETAILED DESCRIPTION OF THE INVENTION




Referring now to

FIG. 1

, a washing machine


10


includes a washtub


13


beneath an upper surface


12


having a door


14


opening to provide access to the washtub


13


. The door


14


is recessed within a well


16


in the upper surface


12


.




The well


16


is slightly larger than the door


14


so as to create a channel therebetween. The channel defines a spill capture region


20


in which spills from a bottle of a laundry aid


22


would be corralled by the well


16


to drain into the washtub


13


.




A console


24


extends upward from the rear edge of the upper surface


12


to present, on its front surface, controls


26


including a cycle timer control


28


of types well known in the art. Also positioned on the front surface of the console


24


is an access door


30


for a laundry aid dispenser of the present invention. The access door


30


is supported at an upper edge to swing about a generally horizontal axis between a closed position


32


(shown in solid lines) and an open position


34


(shown in phantom lines).




Referring now also to

FIG. 2

, the access door


30


opens to reveal upwardly open ends of accumulator cups


38




a


or


38




b


sitting within a laundry aid chamber


40


, both positioned beneath the door


30


and within the console


24


. The cups


38




a


and


38




b


are sized and held within outer chamber wall


42


of the laundry aid chamber


40


so that the internal volumes of the cups


38




a


and


38




b


are visible to a typical user standing toward the front of the washing machine


10


.




In this way the laundry aid


22


may be directly introduced into the accumulator cups


38




a


and


38




b


without pre-measuring. Graduations


48


in the form of notched, raised ribs extending upward from the bottoms of the cups


38




a


and


38




b


may provide further guidance indicating how full the cup should be filled. The graduations


48


may provide indicia for different amounts of laundry aid


22


to be introduced into the cups


38


corresponding to different sizes of the load. The graduations may alternatively use other marking techniques such as printed lines or the like.




As will be explained below, prior to the time at which the laundry aid


22


are to be introduced to the washtub


13


, no laundry aid


22


flows out of the accumulator cups


38




a


and


38




b


. This facilitates the use of the accumulator cups


38




a


and


38




b


and their graduations


48


in lieu of a separate measuring container.




The underside of the door


30


, when in the open position, displays labels


36


indicating the type of laundry aid


22


to be placed in the respective accumulator cups


38




a


and


38




b


. As depicted, a fabric softener may be placed in the leftmost accumulator cup


38




a


and hence a portion of the door


30


over this cup


38




a


includes the label


36


of “SOFTENER” and a downward extending arrow pointing to the accumulator cup


38




a


. Conversely, a bleach may be placed in the rightmost accumulator cup


38




b


and hence a portion of the door


30


over this cup


38




b


includes the label


36


of “BLEACH” and a downward extending arrow pointing to the accumulator cup


38




b.






The labels


36


are in raised relief and hence the arrow may include drainage notch


44


to allow spills caught by the door


30


to drain downward into the respective cup


38


. For similar reasons, a notch


46


may be placed in the lower edge of the door


30


over each cup


38




a


and


38




b.






Referring now to

FIG. 3

, each cup


38


has vertical walls


56


extending upward from a base


58


to open in an upper lip


60


. A front part of the upper lip


60


toward the front of the washing machine


10


extends forward over the front vertical wall


56


to provide a gutter


62


increasing the area of the lip


60


through which laundry aid


22


may be introduced into the cup


38


.




The front vertical wall


56


fits adjacent to an outer chamber wall


42


of the laundry aid chamber


40


but the rear vertical wall


56


is spaced away from its corresponding vertical outer chamber wall


42


to define therebetween a channel


63


. Overflow ports


50


may be positioned beneath the lip


60


near the rear vertical wall


56


and channel


63


to conduct excess laundry aid


22


, prior to its spilling over the lips


60


, through the overflow port


50


and the channel


63


through a sluice-way


65


beneath the base


58


, to a spout


64


leading to the washtub


13


. Thus overflow is conducted by the outer chamber walls


42


of the laundry aid chamber


40


to the washtub


13


.




Referring to

FIGS. 3 and 6

, the outer surface of the base


58


of each cup


38


includes a downwardly extending socket


66


engaging an upwardly extending pin


68


. The pins


68


for different cups


38


may include slots


70


located at different locations on the pin


68


and corresponding with wards


72


in the corresponding socket


66


. The effect of the locations of slot


70


and wards


72


is to provide a keying of particular cups


38




a


and


38




b


with only one location in the laundry aid chamber


40


. In this way, each of the cups


38




a


and


38




b


may have different volumes corresponding with their intended laundry aids


22


and have a unique color and possibly other indicia to indicate the type of laundry aid intended for the cups


38


. Preferably the color of the cup


38


corresponds with the color of its labels


36


and serving generally to remind the user of a particular type of laundry aid to be placed within the cups


38




a


and


38




b.






The base


58


of each cup


38


includes an orifice


74


having a vertical axis and positioned at a lowermost portion of the inner surface of the base


58


, the latter which may be slightly concave to promote drainage towards this orifice


74


.




The underside of the orifice


74


provides a valve seat against which a valve head


78


may be pressed to retain the laundry aid


22


within the cup


38


or retracted to allow drainage of laundry aid


22


, from within the cup


38


through the orifice


74


, the sluice-way


65


into the spout


64


and washtub


13


.




Upward movement of the cup


38


under pressure from the valve head


78


is prevented by a retainer arm


52


extending inward and downward from an upper edge of


10


the rear vertical outer chamber wall


42


. A lower edge of the retainer arm


52


holds a pawl


96


engaging an upper lip


60


of the cup


38


. The retainer arm


52


may be pressed inward as indicated by arrow


98


to release the cup


38


so that it may be removed for washing or inspection. Removal of the cup also allows access to the sluiceway


65


and spout


64


for cleaning of debris and the like.




The retraction of the valve head


78


is effected by an actuator


80


seen also in FIG.


4


. The actuator


80


may be a wax motor of a type well known in the art in which an electric current introduced through terminals


82


of the actuator


80


heats a wax whose expansion actuates an internal piston (not shown) attached to an actuator arm


84


extending vertically upward from the actuator


80


toward the orifice


74


. The vertical orientation (and movement) of the actuator arm


84


allows larger tolerances in the vertical location of the cups


38


and hence the valve seat provided by the orifice


74


, incidental to the cups being removable. Vertical tolerances are accommodated by a spring loading of the actuator arm (not shown) providing slight over travel.




An upper barbed end of the actuator arm


84


may be captured within an upper portion of an elastomeric boot


86


. The lower edge of the boot


86


hermetically seals a rim of the actuator


80


surrounding the actuator arm


84


to prevent the infusion of laundry aids


22


into the joint between the actuator arm


84


and the body of the actuator


80


. The outer edge of the boot may have seals


88


which engage in a tubular orifice


92


in the bottom of the laundry aid chamber


40


beneath the cups


38


. The seals


88


prevent laundry aid from escaping from the laundry aid chamber


40


past the boot


86


.




The upper outer surface of the boot


86


provides an upwardly facing conical member


90


which, as described above, may engage, vertex first, with the orifice


74


to block or release laundry aids


22


, according to an electrical signal, is received by the actuator


80


.




In the preferred embodiment, the actuator


80


is attached to the cycle timer


28


(shown in

FIG. 1

) which may then precisely control the time of release of laundry aid from either of the cups


38


. Each of the cups


38




a


and


38




b


has its own actuator


80


and may receive a separate signal from the cycle timer


28


to release contained laundry aids


22


at different times.




Referring now to

FIG. 5

, each of the cups


38




a


and


38




b


may have corresponding orifices


74




a


and


74




b


opened and closed by corresponding valve heads


78




a


and


78




b


moved by corresponding actuators


80




a


and


80




b


. As described above, the actuators


80




a


and


80




b


are attached as shown in

FIG. 3

to a tubular orifice


92


extending through the bottom wall of laundry aid chamber


40


such as forms part of the sluiceway


65


. This bottom wall of the laundry aid chamber


40


slopes downward from cup


38




b


to


38




a


and toward the spout


64


so as to promote drainage through the spout


64


.




Sluice-way


65


includes a water inlet port


100


opposite the spout


64


receiving a hose


102


providing a source of water, for example, the cold or hot water inlet valve or from a washing machine pump (not shown) that may accept a partial diversion of waters pumped by the washing machine through the sluice-way


65


to provide a flushing of viscous laundry aids into the washtub


13


for full dispersion. Significantly, when the valves formed by orifices


74


and valve heads


78


are open, the water through sluiceway


65


serves to clean the valve heads


78


and orifices


74


of residual laundry aid


22


. Further because the cups


38




a


and


38




b


consistently drain under the force of gravity, as opposed to intermittent drainage through centrifugal action over their upper edges, the cups


38




a


and


38




b


tend to remain much cleaner than prior art centrifugal dispenser techniques. Again the hermetic seal provided by the boots on the valve heads


78




a


and


78




b


prevent leakage out of the chamber area.




A temperature sensor


106


may be attached to a lower wall of the sluiceway


65


so that a probe


104


extends into the path of the water from the hose


102


. The temperature sensor may make use of any of a number of sensing devices including thermistors, resistive temperature detectors (RTD), thermocouples, bimetallic switches, and other similar devices known in the art. The temperature sensor


106


provides a measure of the temperature of the water from upstream hot and cold water valves (not shown but well known in the art) as mixed and to some extent accumulated within the turbulent flow of the sluiceway


65


to provide a consistent temperature signal. This temperature signal is sent to a control controlling the hot and cold water valves so as to provide closed loop control of water temperature.




It will be understood that the volume of cups


38




a


and


38




b


may be varied from one another by changing their cross-sectional diameter and/or height as provided by the sloping floor of the sluiceway


65


. In this way, different volume ratios of laundry aids can be matched by different ratios of the volumes of the cups


38




a


and


38




b


while providing that they are filled to substantially the same heights for convenience of the consumer.




Referring now to

FIG. 7

, in an alternative embodiment of the invention, the water inlet port


100


includes a branch


107


prior to entry into the laundry aid chamber


40


and sluiceway


65


. One portion of the branch passes through a restriction


108


and then into the sluiceway


65


as described above with respect to FIG.


5


. The second portion of the branch extends vertically into a tower passage


110


, such as may be molded or attached to an outer chamber wall


42


in one wall of the laundry aid chamber


40


, adjacent, in this example, to cup


38




c.






The restriction


108


is such that when water flows in hose


102


, a portion is directed up the tower passage


110


to an orifice


112


. The orifice


112


is aligned with a target opening in the upper edge of a vertical side wall of the cup


38




c


adjacent to the orifice


112


so that a stream of water


115


is directed into the interior of the cup


38




c


near the top of the cup


38




c


. Dry laundry aid


116


, such as powdered detergent, is wet by the stream


115


to dissolve and pass through the orifice


74




c


of the cup


38




c.






Because detergent is the first laundry aid typically added to the wash, the stream


115


may start at the beginning of the wash cycle when water is first provided from hose


102


and may continue during the entire wash cycle passing through the cup


38




c


even after it is empty. For other laundry aids, a valve may be used to turn the stream


115


on and off.




It will be further understood that the present invention is not limited to a given number of cups


38


but may be used to provide a single cup or may be expanded to include three or more cups, for example, for powdered or liquid detergent, bleach and water softener as will be understood from the above description to one of ordinary skill in the art. In each case, the sluiceway


65


may be shared by each of the cups whose openings may be clustered conveniently for use by the consumer. Other locations of the cups, for example, under the door


14


as shown in

FIG. 1

at location


120


or on the upper surface


12


at location


122


are also possible with the present design.




It is specifically intended that the present invention not be limited to the embodiments and illustrations contained herein, but that modified forms of those embodiments including portions of the embodiments and combinations of elements of different embodiments also be included as come within the scope of the following claims.



Claims
  • 1. A laundry aid dispenser for use in a washing machine, the washing machine providing a housing having an upper surface, a washtub positioned within the housing to receive clothing to be washed, and a console extending upward from the upper surface of the housing and including a door, the laundry aid dispenser comprising:a laundry aid chamber positioned within the console behind the door to be revealed when the door is open; a channel leading from the laundry aid chamber to the washtub; at least one electrically actuated valve positioned between the laundry aid chamber and the channel, the electrically actuated valve, when closed, causing the accumulation of introduced laundry aid in the laundry aid chamber as visible by a user through the door, and when opened, releasing the laundry aid accumulated in the laundry aid chamber into the channel; whereby laundry aids may be introduced to the console without pre-measuring for later automatic introduction to the washtub.
  • 2. The laundry aid dispenser of claim 1 wherein the laundry aid chamber includes an outer chamber wall receiving at least one removable cup having an upper open end and a lower dispensing orifice, the cup fitting within the outer chamber wall so that the dispensing orifice engages with the electrically actuated valve and wherein the electrically actuated valve communicates with the dispensing orifice to control the flow of the laundry aid placed in the cup.
  • 3. The laundry aid dispenser of claim 2 wherein the electrically actuated valve provides a valve head movable vertically from an upward closed position to a lower opened position and wherein the valve head abuts a bottom surface of the dispensing orifice to stop the flow therefrom when in the upwardly closed position.
  • 4. The laundry aid dispenser of claim 2 wherein the laundry aid chamber and removable cup include interengaging detent surfaces holding the cup in place within the laundry aid chamber against a predetermined upward force.
  • 5. The laundry aid dispenser of claim 2 including at least a second electrically actuated valve and a second removable cup, the second removable cup also having an upper open end and a lower dispensing orifice, the second removable cup fitting within the laundry aid chamber adjacent to the first removable cup so that the dispensing orifice of the second removable cup engages with the second electrically actuated valve and wherein the second electrically actuated valve communicates with the dispensing orifice of the second removable cup to control the flow of the laundry aid placed in the cup to the channel.
  • 6. The laundry aid dispenser of claim 5 wherein the first and second cups are of different colors to distinguish types of laundry aids.
  • 7. The laundry aid dispenser of claim 5 wherein the first and second cups include different ward surfaces preventing engagement of the first cup with the second electrically actuated valve and preventing engagement of the second cup with the first electrically actuated valve.
  • 8. The laundry aid dispenser of claim 5 wherein the cups are of different volumes related in ratio to a volumetric ratio between typical usage of predetermined laundry aids intended for the cups.
  • 9. The laundry aid dispenser of claim 8 wherein laundry aids intended for the cups are selected from the group consisting of bleach, fabric softener, and detergent.
  • 10. The laundry aid dispenser of claim 5 wherein the underside of the door is exposed when the door is opened and wherein the underside includes indicia indicating the proper laundry aid for each cup.
  • 11. The laundry aid dispenser of claim 2 wherein the cup has at least one internal volume graduation indicating an amount of laundry aid placed therein.
  • 12. The laundry aid dispenser of claim 2 including a bypass passage communicating between the outer chamber wall and the channel to the washtub and wherein at least one vertical wall of the cup fits within the outer chamber wall to provide a chute between the vertical wall and a corresponding outer chamber wall and wherein the cup provides an overflow passage beneath an upper edge of the laundry aid chamber and communicating with the chute;whereby excess laundry aid is channel directed to the washtub.
  • 13. The laundry aid dispenser of claim 12 wherein the overflow passage is an orifice within a vertical wall of the cup.
  • 14. The laundry aid dispenser of claim 1 wherein the electrically actuated valve provides a valve head movable vertically from an upward closed position to a lower opened position and wherein the valve head abuts a dispensing orifice to stop the flow of a laundry aid from the laundry aid chamber when in the upward closed position, and wherein the laundry aid chamber includes a flush channel communicating with a source of water and wherein the flush channel passes water in the flush channel between the bottom surface of the orifice and the valve head when the valve is in the opened position.
  • 15. The laundry aid dispenser of claim 14 including a temperature sensor attached to the flush channel and positioned in a path of water flow.
  • 16. The laundry aid dispenser of claim 1 wherein the laundry aid chamber communicates with a source of water and including an orifice receiving water from the source of water to direct a water stream into an upper portion of the laundry aid chamber upon accumulated laundry aid therein.
  • 17. The laundry aid dispenser of claim 1 wherein the electrically actuable valve is a wax motor.
  • 18. The laundry aid dispenser of claim 1 wherein the electrically actuated valve provides a valve head movable vertically from an upward closed position to a lower opened position and wherein the valve head abuts a dispensing orifice to stop the flow of a laundry aid from the laundry aid chamber when in the upwardly closed position, the electrically actuable valve further having a housing having a movable actuation arm extending therefrom and wherein the valve head is a flexible rubber hood covering an actuator arm and a portion of the housing surrounding the actuator arm.
  • 19. A laundry aid dispenser for use in a washing machine having a washtub held within a housing, the laundry aid dispenser comprising:a laundry aid chamber having an outer chamber wall receiving at least one removable cup, the cup having an upper open end and a lower dispensing orifice and fitting within the outer chamber wall; a channel leading to the washtub; at least one electrically actuated valve attached to the outer chamber walls so that the dispensing orifice of the cup engages with the electrically actuated valve when the cup is positioned within the outer chamber walls; whereby flow of a laundry aid placed in the cup between the cup and washtub may be controlled.
  • 20. The laundry aid dispenser of claim 19 wherein the electrically actuated valve provides a valve head movable vertically from an upward closed position to a lower opened position and wherein the valve head abuts a bottom surface of the dispensing orifice to stop the flow therefrom when in the upwardly closed position.
  • 21. The laundry aid dispenser of claim 19 wherein the laundry aid chamber and removable cup include interengaging detent surfaces holding the cup in place within the laundry aid chamber against a predetermined upward force.
  • 22. The laundry aid dispenser of claim 19 including at least a second electrically actuated valve and a second removable cup, the second removable cup also having an upper open end and a lower dispensing orifice, the second removable cup fitting within the laundry aid chamber adjacent to the first removable cup so that the dispensing orifice of the second removable cup engages with the second electrically actuated valve and wherein the second electrically actuated valve communicates with the dispensing orifice of the second removable cup to control the flow of the laundry aid placed in the cup to the channel.
  • 23. The laundry aid dispenser of claim 22 wherein the first and second cups are of different colors to distinguish types of laundry aids.
  • 24. The laundry aid dispenser of claim 22 wherein the first and second cups include different ward surfaces preventing engagement of the first cup with the second electrically actuated valve and preventing engagement of the second cup with the first electrically actuated valve.
  • 25. The laundry aid dispenser of claim 22 wherein the cups are of different volumes related in ratio to a volumetric ratio between typical usage of predetermined laundry aids intended for the cups.
  • 26. The laundry aid dispenser of claim 25 wherein laundry aids intended for the cups are selected from the group consisting of bleach, fabric softener, and detergent.
  • 27. The laundry aid dispenser of claim 22 wherein the laundry aid chamber includes a door and wherein the underside of the door is exposed when the door is opened and wherein the underside includes indicia indicating the proper laundry aid for each cup.
  • 28. The laundry aid dispenser of claim 19 wherein the cup has at least one internal volume graduation indicating an amount of laundry aid placed therein.
  • 29. The laundry aid dispenser of claim 19 including a bypass passage communicating between the outer chamber wall and the channel to the washtub and wherein at least one vertical wall of the cup fits within the outer chamber wall to provide a chute between the vertical wall and a corresponding outer chamber wall and wherein the cup provides an overflow passage beneath an upper edge of the laundry aid chamber and communicating with the chute;whereby excess laundry aid is channel directed to the washtub.
  • 30. The laundry aid dispenser of claim 29 wherein the overflow passage is an orifice within a vertical wall of the cup.
  • 31. The laundry aid dispenser of claim 19 wherein the electrically actuated valve provides a valve head movable vertically from an upward closed position to a lower opened position and wherein the valve head abuts the dispensing orifice to stop the flow of a laundry aid from the laundry aid chamber when in the upwardly closed position, and wherein the laundry aid chamber includes a flush channel communicating with a source of water and wherein the flush channel passes water in the flush channel between the bottom surface of the orifice and the valve head when the valve is in the opened position.
  • 32. The laundry aid dispenser of claim 31 including a temperature sensor attached to the flush channel and positioned in a path of water flow.
  • 33. The laundry aid dispenser of claim 19 wherein the laundry aid chamber communicates with a source of water and including an orifice receiving water from the source of water to direct a water stream into an upper portion of the removable cup upon any accumulated laundry aid therein.
  • 34. The laundry aid dispenser of claim 19 wherein the electrically actuable valve is a wax motor.
  • 35. The laundry aid dispenser of claim 19 wherein the electrically actuated valve provides a valve head movable vertically from an upward closed position to a lower opened position and wherein the valve head abuts a dispensing orifice when in the upwardly closed position, the electrically actuable valve further having a housing having a movable actuation arm extending therefrom and wherein the valve head is a flexible rubber hood covering an actuator arm and a portion of the housing surrounding the actuator arm.
  • 36. A laundry aid dispenser for use in a washing machine having a washtub held within a housing, the laundry aid dispenser comprising:a laundry aid chamber having an upper open end for receiving a laundry aid and a lower dispensing orifice; a flush channel leading to the washtub; at least one electrically actuated valve positioned between the laundry aid chamber and the channel having a valve head blocking the orifice in a first position and exposing the orifice to the flush channel in a second position; and a water inlet communicating with the flush channel to receive a flow of water from the washing machine.
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Number Name Date Kind
2927600 Pellerin Mar 1960 A
2990707 Gerhardt et al. Jul 1961 A
3079944 McLaughlin Mar 1963 A
3120329 Noakes Feb 1964 A
3207373 Dannenmann Sep 1965 A
4009598 Bernard et al. Mar 1977 A
4323170 Ikeda Apr 1982 A
4528709 Getz et al. Jul 1985 A
4643350 DeSchaaf et al. Feb 1987 A
5255844 Miller et al. Oct 1993 A
5375438 Babuin Dec 1994 A
5870906 Denisar Feb 1999 A
6006388 Young Dec 1999 A