System and method for disposing waste packages such as diapers

• US 8,833,592 B2
• Filed: 10/30/2009
• Issued: 09/16/2014
• Est. Priority Date: 10/30/2009
• Status: Active Grant

• Current Assignee: Munchkin Incorporated
• Original Assignee: Munchkin Incorporated
• Inventors: Dunn, Steven B., Hatherill, Mark A., Johnson, Kevin D.
• Primary Examiner(s): CASTELLANO, STEPHEN J
• Application Number:
  US12/609,801
• Publication Number:
  US 20110099957A1
• Time in Patent Office: 1,782 Days
• Field of Search: 220/495.06, 220/908.1, 220/495.08, 220/495.11, 220/495.01, 533/70, 535/67, 535/76
• US Class Current: 220/495.06
• CPC Class Codes: B65F 1/0006 Flexible refuse receptables, e.g. bags, sacks
• CPC Class Codes: B65F 1/06 with flexible inserts, e.g. bags or sacks B65F1/0073 takes precedence
• CPC Class Codes: B65F 2210/1675 by twisting, e.g. of a flexible tube
• CPC Class Codes: B65F 2240/132 Diapers

Abstract

Systems and methods for facilitating hygienic storage and disposal of waste packages such as used disposable diapers include a housing, a lid, and a bag unit having a bag frame and an attached single use flexible bag. The flexible bag is pleated and larger in cross-section at a lower portion than it is at the connection to the bag frame. The bag frame is releasably mounted to the housing so that it will not rotate. The lower portion of the flexible bag is positioned in a storage chamber of the housing that is shaped so as to align and center the bag. A rotatable member having radially extending flexible fingers is engaged with an intermediate portion of the bag. When the lid is closed, the rotatable member will twist the intermediate portion of the bag, sealing odors in the lower portion of the bag. A parent or caregiver will push the waste package through the resistance of the twisted intermediate portion into the lower portion of the bag, and close the lid to re-seal the twisted portion.

Claims

1. A diaper pail assembly, comprising:

a housing, said housing having a plurality of recesses;

a bag unit having a bag frame bonded to a flexible bag, said bag frame being releasably mounted to said housing so as to be prevented from rotating with respect to said housing, wherein said bag frame has a plurality of tabs that extend radially outward from the bag frame, and that are respectively positioned within said plurality of recesses

wherein the tabs are aligned in a plane of a ring adjacent to the top of the housing.

2. A diaper pail assembly according to claim 1, wherein said housing has at least three of said recesses.

3. A diaper pail assembly according to claim 1, further comprising a locking mechanism for releasably locking at least one of said tabs within said respective recess.

4. A diaper pail assembly according to claim 1, wherein said bag frame has a lower surface, and wherein said housing is constructed and arranged to permit a user to lift said bag frame from said housing by contacting said lower surface.

5. A diaper pail assembly according to claim 4, wherein said housing has a finger access recess defined therein for permitting a user to place a finger against said lower surface.

6. A diaper pail assembly according to claim 1, further comprising a rotatable member for twisting a portion of said flexible bag, said rotatable member comprising a plurality of flexible, inwardly extending fingers.

7. A diaper pail assembly according to claim 1, wherein said bag frame has a lower surface, and further comprising a rotatable member for twisting a portion of said flexible bag, and wherein said rotatable member supports said lower surface of said bag frame.

8. A diaper pail assembly according to claim 1, wherein said flexible bag is fixedly secured to a lower surface of said bag frame.

9. A diaper pail assembly according to claim 1, wherein said flexible bag has a first diameter at a first location where said flexible bag is secured to said bag frame and a second diameter at a second location that is distal from said first location.

10. A diaper pail assembly according to claim 1, wherein said flexible bag is pleated.

11. A diaper pail assembly according to claim 1, wherein said housing defines a bottom surface for supporting the flexible bag, said bottom surface having a curved concave portion for aligning and centering the flexible bag.

12. A diaper pail assembly according to claim 1, wherein said bag frame has a hinge defined therein permitting said bag frame to be moved from an open position to a closed position, and wherein said bag frame further comprises integral locking structure for locking said bag frame in the closed position.

13. A diaper pail assembly according to claim 1, wherein said bag frame comprises polyethylene.

14. A diaper pail assembly, comprising:

a housing, said housing having at least one recess;

a bag unit having a bag frame and a flexible bag, said bag frame being releasably mounted to said housing so as to be prevented from rotating with respect to said housing, wherein said bag frame has at least one tab that extend radially outward from the bag frame that is positioned within said recess and wherein the tabs are aligned in a plane of a ring adjacent to the top of the housing;

and wherein said housing further comprises a locking mechanism for releasably locking said tab within said recess.

15. A diaper pail assembly according to claim 14, wherein said locking mechanism comprises a projection for engaging an upper surface of said tab.

16. A diaper pail assembly according to claim 15, wherein said bag frame is fabricated from a flexible material, whereby said bag frame may be temporarily elastically deformed by a user in order to position and remove said tab beneath said projection.

17. A diaper pail assembly according to claim 14, wherein said housing comprises at least two of said recesses and locking mechanisms.

18. A diaper pail assembly according to claim 17, wherein said housing comprises at least three of said recesses and locking mechanisms.

19. A diaper pail assembly according to claim 14, wherein said bag frame has a lower surface, and wherein said housing is constructed and arranged to permit a user to lift said bag frame from said housing by contacting said lower surface.

20. A diaper pail assembly according to claim 19, wherein said housing has a finger access recess defined therein for permitting a user to place a finger against said lower surface.

21. A diaper pail assembly according to claim 20, further comprising a rotatable member for twisting a portion of said flexible bag, said rotatable member comprising a plurality of flexible, inwardly extending fingers.

22. A diaper pail assembly according to claim 14, wherein said bag frame has a lower surface, and further comprising a rotatable member for twisting a portion of said flexible bag, and wherein said rotatable member supports said lower surface of said bag frame.

23. A diaper pail assembly according to claim 14, wherein said flexible bag is fixedly secured to a lower surface of said bag frame.

24. A diaper pail assembly according to claim 14, wherein said flexible bag has a first diameter at a first location where said flexible bag is secured to said bag frame and a second diameter at a second location that is distal from said first location.

25. A diaper pail assembly according to claim 14, wherein said flexible bag is pleated.

26. A diaper pail assembly according to claim 14, wherein said housing defines a bottom surface for supporting the flexible bag, said bottom surface having a curved concave portion for aligning and centering the flexible bag.

27. A diaper pail assembly according to claim 14, wherein said bag frame has a hinge defined therein permitting said bag frame to be moved from an open position to a closed position, and wherein said bag frame further comprises integral locking structure for locking said bag frame in the closed position.

28. A diaper pail assembly according to claim 14, wherein said flexible bag has an external surface having a kinetic frictional coefficient that is within a range of about 0.17 to about 0.47.

29. A diaper pail assembly, comprising:

a housing;

a bag unit having a bag frame bonded to a flexible bag, said bag frame having a lower surface and being releasably mounted to said housing so as not to rotate with respect to said housing; and

wherein said bag frame has at least one tab that extends radially outward from the bag frame into at least one recess in the housing and wherein the tabs are aligned in a plane of a ring adjacent to the top of the housing,

said housing is constructed and arranged to permit a user to lift said bag frame from said housing by contacting said lower surface.

30. A diaper pail assembly according to claim 29, wherein said housing has a finger access recess defined therein for permitting a user to place a finger against said lower surface.

31. A diaper pail assembly according to claim 29, wherein said bag frame has at least one tab that is positioned within said recess, and wherein said housing further comprises a locking mechanism for releasably locking said tab within a recess on the housing.

32. A diaper pail assembly according to claim 31, wherein said locking mechanism comprises a projection for engaging an upper surface of said tab.

33. A diaper pail assembly according to claim 32, wherein said bag frame is fabricated from a flexible material, whereby said bag frame may be temporarily elastically deformed by a user in order to position and remove said tab beneath said projection.

34. A diaper pail assembly according to claim 33, wherein said housing comprises at least two of said recesses and locking mechanisms.

35. A diaper pail assembly according to claim 34, wherein said housing comprises at least three of said recesses and locking mechanisms.