Automatic detergent dispenser

• US 5,839,454 A
• Filed: 03/14/1997
• Issued: 11/24/1998
• Est. Priority Date: 03/14/1997
• Status: Expired due to Fees

• Current Assignee: MM Equities Ltd.
• Original Assignee: Warren W. Matz
• Inventors: Matz, Warren W.
• Primary Examiner(s): Coe, Philip R.
• Application Number:
  US08/818,608
• Time in Patent Office: 620 Days
• Field of Search: 134/56 D, 134/57 D, 134/58 D, 134/99.2, 134/104.1, 134/113, 68/12.18, 68/17 R, 222/651, 222/652
• 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

The instant invention is an automatic detergent dispenser for residential dishwashers allowing transfer of liquid from a store purchased container or an integrated storage receptacle. The invention allows an individual to determine the amount of detergent to be transferred with provisions to operate the detergent transfer only upon demand preventing operation of the dishwasher if an insufficient amount of detergent is available. An alternative embodiment allows positioning of a storage container beneath the dishwasher chamber with provisions to fill the container.

Claims

1. In combination with a dishwasher having a washing chamber and internal spray mechanism operated by water flowing through an electrically actuated inlet solenoid for cleansing of utensils placed within the chamber having detergent released through the use of a chamber mounted dispenser mechanism, an automatic detergent dispenser comprising:

storage means for holding a large volume of liquid detergent;

transfer means fluidly coupling said storage means to said washing chamber; and

a control means electrically coupling said transfer means to said inlet solenoid and said chamber mounted dispenser mechanism;

whereby said storage means is located external said chamber wherein liquid detergent is drawn from said storage means by said transfer means upon initiation of said chamber mounted dispenser mechanism if said inlet solenoid is actuated.

2. The combination according to claim 1 wherein said storage means is defined as a container capable of holding at least one quart of detergent.

3. The combination according to claim 2 wherein said container is a shipping bottle for liquid detergent.

4. The combination according to claim 1 wherein said transfer means is defined as an electrically operated pump, said pump having an inlet fluidly coupled to said storage means for drawing of detergent and an outlet fluidly coupled to said washing chamber for transferring of detergent to said chamber.

5. The combination according to claim 4 wherein said transfer pump includes a DC operated motor.

6. The combination according to claim 4 wherein said control means includes a timer to control the amount of time the transfer pump operates wherein setting of the timer allows an individual to predict the amount of liquid detergent to be transferred.

7. The combination according to claim 6 wherein said timer is manually adjustable.

8. The combination according to claim 1 wherein said control means includes a sensor for monitoring the level of liquid detergent in said storage means, said sensor closing the inlet solenoid and initiating an alarm sequence upon the detection of a low level of liquid.

9. The combination according to claim 8, wherein said sensor closes the inlet solenoid once triggered by a low level condition after a predetermined number of washing cycles.

10. The combination according to claim 1 wherein said storage means includes a cap adaptable to said storage means for securing a detergent suction tube, sensor tube, return tube and a venting tube.

11. In combination with a dishwasher having a washing chamber and internal spray mechanism operated by water flowing through an electrically actuated inlet solenoid for cleansing of utensils placed within the chamber having detergent released through the use of a chamber mounted dispenser mechanism, an automatic detergent dispenser comprising:

storage means capable of holding at least one quart of detergent;

a transfer means having an inlet tube fluidly coupled to said storage means for drawing of detergent and an outlet tube fluidly coupled to said washing chamber for transferring of detergent to said chamber; and

a control means having a timer electrically coupling said transfer means to said inlet solenoid and said chamber mounted dispenser mechanism;

whereby said storage means is located external said chamber wherein liquid detergent is drawn from said storage means by said transfer means upon initiation of said chamber mounted dispenser mechanism if said inlet solenoid is actuated.

12. The combination according to claim 11 wherein said control means includes a sensor for monitoring the level of liquid detergent in said storage means, said sensor closing the inlet solenoid and initiating an alarm sequence upon the detection of a low level of liquid.

13. The combination according to claim 12 wherein said sensor closes the inlet solenoid once triggered by a low level condition after a predetermined number of washing cycles.

14. The combination according to claim 12 wherein said alarm sequence includes a visual and audible indicator.

15. The combination according to claim 11 wherein said storage means includes a means for venting.

16. The combination according to claim 11 wherein said storage means includes a remote fill tube having an inlet opening secured through a wall of said wash chamber, said inlet opening having a cap releaseably engagable with said inlet opening.

17. The combination according to claim 16 wherein said cap has a cone shaped body member having a front wall a positioned a fixed distance from a rear wall forming a chamber therebetween with said cone shape allowing accumulated water to drain into the wash chamber, said rear wall having a plurality of openings with a flexible member coupled thereto providing a venting seal to said inlet opening.

18. The combination according to claim 11 wherein said outlet tube includes a self cleaning injection fitting means secured to a side wall of said wash chamber.

19. In combination with a dishwasher having a washing chamber and internal spray mechanism operated by water flowing through an electrically actuated inlet solenoid for cleansing of utensils placed within the chamber having detergent released through the use of a chamber mounted dispenser mechanism, an automatic detergent dispenser comprising:

a remotely located storage means capable of holding at least one quart of detergent, said storage means having a vented fill tube;

a transfer means having an inlet tube fluidly coupled to said storage means for drawing of detergent and an outlet tube fluidly coupled to said washing chamber for transferring of detergent to said chamber, said outlet tube coupled to a self cleaning injection fitting;

a control means having a timer electrically coupling said transfer means to said inlet solenoid and said chamber mounted dispenser mechanism; and

a sensor means for monitoring the level of liquid detergent in said storage means, said sensor closing the inlet solenoid and initiating an alarm sequence upon the detection of a low level of liquid;

whereby said storage means is located external said chamber wherein liquid detergent is drawn from said storage means by said transfer means upon initiation of said chamber mounted dispenser mechanism if said inlet solenoid is actuated.