Automatic detergent dispenser

• US 6,138,693 A
• Filed: 11/23/1998
• Issued: 10/31/2000
• Est. Priority Date: 11/23/1998
• Status: Expired due to Fees

• Current Assignee: MM Equities Ltd.
• Original Assignee: MM Equities Ltd.
• Inventors: Matz, Warren W.
• Primary Examiner(s): Stinson, Frankie L.
• Application Number:
  US09/198,221
• Time in Patent Office: 708 Days
• Field of Search: 134/56 D, 134/57 D, 134/58 D, 134/100.1, 134/99.2, 222/81, 68/17 R, 68/207 R
• US Class Current: 134/57.00D
• CPC Class Codes: A47L 15/4418 in the form of liquids A47L15/4409, A47L15/4436, A47L15/4445 take precedence

Abstract

An automatic detergent dispenser for dishwashers allowing transfer of a liquid detergent from a disposable detergent container placed in holders along the sidewall of a dish washing chamber. The storage container includes a membrane that is pierced upon installation with a coupling tube to allow the flow of liquid detergent without the transfer of fluid between containers. Liquid detergent flows by gravity to a dispenser unit where it is stored until the wash cycle and released from the dispenser by use of an electric actuator. The detergent containers include a transparent portion to provide a visual indication of the amount of detergent contained therein.

Claims

1. In combination with a dishwasher having a washing chamber and internal spray mechanism for cleansing of utensils placed within the chamber, an automatic detergent dispenser comprising:

a storage means for holding a large volume of liquid detergent;

a dispensing means electrically coupled to said dishwasher for dispensing a predetermined amount of liquid detergent;

a coupling tube fluidly coupling said storage means to said dispensing means, said storage means including a pierceable membrane operatively associated with said coupling tube;

whereby liquid is drawn from said storage means by gravity into said dispenser.

2. The combination according to claim 1 wherein said storage means is further defined as a rigid container having an upper insertion tab, a lower insertion tab, and the membrane located along a side edge thereof, said tabs slidably along an upper and lower bracket mounted bracket for securing said rigid container along a side wall of said dishwasher.

3. The combination according to claim 1 wherein said storage means is further defined as a rigid container having two lower insertion tabs with the membrane located therebetween, and a means for securing an upper portion of said container to an inner wall of said dishwasher.

4. The combination according to claim 1 wherein said storage means is disposable.

5. The combination according to claim 1 wherein said housing is recyclable.

6. The combination according claim 1 wherein said housing includes a chamber for placement of a thin, flexible bag of liquid detergent.

7. The combination according to claim 1 wherein said dispenser includes a gravity filled housing electrically coupled to the dispensing cycle of the dishwasher.

8. The combination according to claim 1 wherein said storage means includes a means for venting.

9. The combination according to claim 1 wherein said storage means includes a transparent window to provide a visual indicator of the amount of detergent stored therein.

10. The combination according to claim 9 wherein said transparent window includes indicia positioned along a side of said window to assist in quantity determination.

11. The combination according to claim 1 wherein said dispensing means includes:

a frame secured within said washing chamber;

a bowl member in fluid communication with said coupling tube, said bowl member having an internal cavity and being adapted for removable attachment to said frame member; and

a release mechanism adapted to selectively provide an outlet opening within said bowl member, said release mechanism including a spring-biased piston having a magnetically attracted member at a first end and a sealing member at an opposite second end, said piston moving linearly between a release orientation upon activation of said solenoid and a sealing orientation upon deactivation of said solenoid.

12. The combination according to claim 1 wherein said dispensing means includes:

housing including a cavity in fluid communication with said coupling tube, said housing being secured within said washing chamber; and

a release mechanism adapted to selectively provide an outlet opening within said housing, said release mechanism including a spring-biased pivot arm having a magnetically attracted member at a first end and a sealing member at an opposite second end, said pivot arm rotating between a release orientation upon activation of said solenoid and a sealing orientation upon deactivation of said solenoid.

13. In combination with a dishwasher having a wishing chamber and internal spray mechanism for cleansing of utensils placed within the chamber, an automatic detergent dispenser comprising:

a vented recyclable storage means for holding a large volume of liquid detergent, said storage means having a pierceable membrane on one end and a transparent window along another end;

a dispensing means electrically coupled to said dishwasher for dispensing a predetermined amount of liquid detergent; and

a coupling tube fluidly coupling said storage means to said dispensing means;

whereby said storage means is positioned within said dish washing chamber and liquid is drawn from said storage means by gravity into said dispenser.

14. The combination according to claim 13 wherein said storage means is further defined as a rigid container having an upper insertion tab, a lower insertion tab, and the membrane located along a side edge thereof, said tabs slidably along an upper and lower bracket mounted bracket for securing said rigid container along a side wall of said dishwasher.

15. The combination according to claim 13 wherein said storage means is further defined as a rigid container having two lower insertion tabs with the membrane located therebetween, and a means for securing an upper portion of said container to an inner wall of said dishwasher.

16. The combination according claim 13 wherein said housing includes a chamber for placement of a thin, flexible bag of liquid detergent.