Motorized household liquid dispenser

• US 7,191,920 B2
• Filed: 09/24/2003
• Issued: 03/20/2007
• Est. Priority Date: 09/25/2002
• Status: Active Grant

• Current Assignee: Conopco, Inc. (Unilever PLC)
• Original Assignee: Conopco, Inc. (Unilever PLC)
• Inventors: Saunders, Craig M., Boll, David, Schiavoni, Michael, Kalman, Jeffery
• Primary Examiner(s): Derakshani; Philippe
• Application Number:
  US10/669,761
• Publication Number:
  US 20040149779A1
• Time in Patent Office: 1,273 Days
• Field of Search: 222/333, 222/385, 222/382, 222/321.8, 222/180
• US Class Current: 222/333
• CPC Class Codes: A47K 5/1205 Dispensing from the top of the dispenser with a vertical piston
• CPC Class Codes: A47K 5/1217 Electrical control means for the dispensing mechanism
• CPC Class Codes: B05B 11/0054 Cartridges, i.e. containers specially designed for easy attachment to or easy removal from the rest of the sprayer attachment arrangements between pump and container B05B11/1043
• CPC Class Codes: B05B 11/1052 Actuation means locking means therefor B05B11/1059; the dispensing stroke being affected by the stored energy of a spring B05B11/109
• CPC Class Codes: B05B 11/1057 Triggers, i.e. actuation means consisting of a single lever having one end rotating or pivoting around an axis or a hinge fixedly attached to the container, and another end directly actuated by the user
• CPC Class Codes: B05B 11/1087 Combination of liquid and air pumps

Abstract

A household liquid dispensing apparatus includes a container for holding a household liquid and a pump for pumping the household liquid out of the container. The pump includes a pump chamber. A dip tube is adapted to be positioned in the container and communicates with the pump chamber. An exhaust tube communicates with the pump chamber and an outlet for the household liquid. A pump actuator mechanically drives the pump. A motor operatively engages the pump actuator. The motor is electrically connected to a power source. A switch is electrically connected to the motor and the power source. A trigger assembly is operatively connected to the switch to control power delivered to the motor. The trigger assembly is positioned under the outlet for the household liquid for easy actuation by an upturned hand.

Claims

1. A household liquid dispensing apparatus comprising:

a container for holding a household liquid;

a pump for pumping the household liquid out of the container, the pump having a pump chamber;

a dip tube adapted to be positioned in said container and in communication with the pump chamber;

an exhaust tube in communication with the pump chamber and an outlet for the household liquid;

a pump actuator for mechanically driving said pump, said pump actuator connected to said pump;

a motor operatively engaging said pump actuator, said motor electrically connected to a power source;

a switch electrically connected to said motor and the power source; and

a trigger operatively connected to said switch to control power delivered to said motor, said trigger positioned under the outlet for the household liquid;

wherein the trigger is positioned in relation to the outlet such that the same hand of the user that mechanically actuates the trigger is also positioned to receive household liquid from the outlet.

2. The apparatus of claim 1, wherein said trigger is adapted to be actuated by a user when the user slightly depresses the back of his hand on a portion of said trigger.

3. The apparatus of claim 1, wherein said trigger comprises a trigger assembly, the trigger assembly includes a trigger pad positioned below the outlet.

4. The apparatus of claim 3, wherein the trigger pad is positioned in relation to the outlet such that an object that exerts a force on the trigger pad is also positioned to receive the household liquid dispensed from the outlet.

5. The apparatus of claim 3, further comprising a housing for said motor, wherein the trigger assembly includes a switch actuator pivotally mounted to one of said housing and said container, wherein the trigger pad is mounted to the switch actuator.

6. The apparatus of claim 5, wherein said housing includes a front wall and said container includes a rear wall disposed adjacent the front wall of said housing.

7. The apparatus of claim 6, wherein the front wall of said housing and the rear wall of said container are complementarily shaped.

8. The apparatus of claim 5, further comprising a latch plate for securing said housing in relation to said container.

9. The apparatus of claim 8, wherein said housing includes a notch and said container includes a notch aligned with the notch of the housing, wherein said latch plate is slidably disposed in the notches.

10. The apparatus of claim 9, wherein said housing includes a depression and said latch includes a protrusion, wherein said depression and said protrusion cooperate to secure said container in relation to said housing.

11. The apparatus of claim 3, further comprising a housing for said motor, wherein the trigger assembly includes a switch actuator movably mounted to one of said housing and said container, wherein the trigger pad is mounted to the switch actuator.

12. The apparatus of claim 11, wherein the trigger pad and the switch actuator are mounted such that the trigger assembly activates the switch in response to slight downward pressure on the trigger pad.

13. The apparatus of claim 11, wherein the trigger pad is positioned in relation to the outlet such that an object that exerts a force on the trigger pad is also positioned to receive the household liquid dispensed from the outlet.

14. The apparatus of claim 1, further comprising a housing wherein said housing includes a first wall and said container includes a first wail disposed adjacent the first wall of said housing.

15. The apparatus of claim 14, wherein the first wall of said housing and the first wall of said container are complementarily shaped.

16. The apparatus of claim 15, further comprising a latch for securing said housing in relationship to said container.

17. The apparatus of claim 16, wherein said housing includes a notch and said container includes a notch aligned with the notch of the housing, wherein said latch comprises a latch plate slidably disposed in the notches.

18. The apparatus of claim 17, wherein said housing includes a depression and said latch plate includes a protrusion, wherein said depression and said protrusion cooperate to secure said container in relationship to said housing.

19. The apparatus of claim 15, wherein the first wall of the housing includes a tongue and the first wall of the container includes a groove, wherein the groove is adapted to fit into the tongue to attach the container to the housing.

20. The apparatus of claim 1, further comprising a mixing apparatus disposed in said exhaust tube.

21. The apparatus of claim 20, wherein said mixing apparatus comprises a screen.

22. The apparatus of claim 1, further comprising a shroud covering the exhaust tube.

23. The apparatus of claim 22, further comprising a housing for said pump and said motor.

24. The apparatus of claim 23, wherein said shroud and a portion of said housing are an integral plastic unit.

25. The apparatus of claim 23, wherein said container is removable from said housing and said shroud.

26. The apparatus of claim 1, wherein said motor operatively engages said pump actuator via a gear reduction transmission.

27. The apparatus of claim 1, wherein the power source comprises at least one battery.

28. A household liquid dispenser for use with an associated bottle for storing a household liquid, the dispenser comprising:

a housing;

a pump for pumping a household liquid from the associated bottle, said pump at least partially disposed in said housing and including a pump chamber;

a nozzle in fluid communication with the pump chamber and defining an outlet;

a pump actuator connected to said pump for working said pump;

a motor operatively engaging said pump actuator and electrically connected to a power source;

a switch electrically connected to said motor and the power source for selectively supplying power to said motor; and

a trigger mounted to said housing and selectively mechanically engaging said switch, wherein said trigger comprises a trigger assembly that includes a trigger pad positioned below the outlet of said nozzle.

29. The dispenser of claim 28, wherein said trigger is adapted to engage said switch in response to downward or lateral pressure applied to said trigger.

30. The dispenser of claim 28, wherein said trigger is pivotally mounted to said housing.

31. The dispenser of claim 30, wherein said trigger comprises a first portion that engages said switch and a second portion depending from said first portion, wherein the second portion is adapted to pivot in response to a force applied to the second portion whereby the first portion engages said switch.

32. The dispenser of claim 28, wherein said housing is adapted to connect to the associated bottle.

33. The dispenser of claim 32, further comprising a latching mechanism to connect said housing to the associated bottle.

34. The dispenser of claim 32, wherein said housing comprises a base wall that aligns with a base wall of the associated bottle when said housing is attached to the associated bottle.

35. The dispenser of claim 32, wherein said housing includes a wall having a shape that is complementary to an adjacent wall of the associated bottle when said housing is connected to the associated bottle.

36. The dispenser of claim 28, further comprising a dip tube adapted to be positioned in the associated bottle.

37. The dispenser of claim 32, further comprising a dip tube adapted to be positioned in the associated bottle.

38. The dispenser of claim 37, wherein said housing includes an opening that communicates with said dip tube.

39. The dispenser of claim 38, wherein the opening in said housing aligns with an opening in the associated bottle when the associated bottle is attached to said housing.

40. The dispenser of claim 28, wherein said motor operatively engages said pump actuator via a transmission that translates rotational movement to reciprocal movement.

41. The dispenser of claim 40, wherein said motor engages said pump via a gear reduction transmission.

42. The dispenser of claim 28, wherein said pump comprises a positive displacement pump.

43. The dispenser of claim 28, wherein said housing includes a shroud that at least partially covers said nozzle.