Waste container with reinforced bottom

• US 6,276,557 B1
• Filed: 04/05/2000
• Issued: 08/21/2001
• Est. Priority Date: 04/08/1999
• Status: Expired due to Fees

• Current Assignee: Cascade Engineering Incorporated
• Original Assignee: Cascade Engineering Incorporated
• Inventors: Wysocki, Edward H.
• Primary Examiner(s): POLLARD, STEVEN M
• Application Number:
  US09/543,471
• Time in Patent Office: 503 Days
• Field of Search: 220/608, 220/908, 220/669, 220/670
• US Class Current: 220/608
• CPC Class Codes: B65F 1/02 without removable inserts
• CPC Class Codes: B65F 1/1473 Receptacles having wheels
• CPC Class Codes: Y10S 220/908 Trash container

Abstract

The invention relates to a waste container of the type typically used in residential waste collection systems. The waste container includes a container body having opposing side walls that extend upwardly from a bottom wall to form a waste compartment with an open top for access thereto. The bottom wall of the container body is reinforced by a series of corrugations to increase the rigidity of the bottom wall to prevent sagging, which can result in premature wear and failure. The corrugations also increase the heat transfer rate of the bottom wall, which improves the cooling characteristics of the waste container during molding. The corrugations further provide airflow channels for the injection of air between the container body and a mold during the molding process to improve the ease of removing the waste container body from the mold and to prevent stretching in the bottom of the container during the molding process.

Claims

1. A waste container for the storage and collection of residential or commercial waste, the waste container comprising:

a body having a bottom wall with a peripheral edge and a peripheral wall extending upwardly from the bottom wall peripheral edge and terminating in an upper edge to define an waste compartment with an open top;

a cover pivotally mounted to the body and moveable between an open position, in which the cover is remote of the open top to permit access to the waste receptacle, and a closed position, in which the cover overlies the open top to cover the same;

a handle extending from the body near the upper edge of the body;

a wheel assembly provided on the body near the bottom wall whereby a user can move the waste container by pulling or pushing on the handle to roll the waste container by the wheel assembly;

an inner rib projecting downwardly from a bottom surface of the bottom wall; and

a plurality of corrugations formed in the bottom wall and extending from the bottom wall peripheral edge to the inner rib wherein the corrugations and inner rib cooperate to form a structural support for the bottom wall.

2. The waste container according to claim 1 wherein the corrugations comprise elongated indentations.

3. The waste container according to claim 2 wherein the thickness of the corrugations is substantially the same thickness of the bottom wall.

4. The waste container according to claim 3 wherein the bottom wall has a substantially constant thickness.

5. The waste container according to claim 2 wherein each of the elongated indentations define a longitudinal axis and have a U-shaped cross section transverse to the longitudinal axis.

6. The waste container according to claim 5 wherein the elongated indentations are arranged in groups of adjacent elongated indentations and the U-shaped combined cross sections of the group of elongated indentations forms a truncated sinusoidal-like wave form.

7. The waste container according to claim 6 wherein the inner rib circumscribes an interior portion of the lower surface of the bottom wall.

8. The waste container according to claim 7 wherein the bottom wall peripheral edge is substantially rectangular to define a front edge, a rear edge, and side edges connecting the front and rear edges, with corners formed at the junctions of the front and rear edges with the side edges, and further comprising corner indentations having an elongated arcuate profile positioned in the bottom wall near the corners and extending between adjacent groups of elongated indentations.

9. The waste container according to claim 8, and further comprising an outer peripheral rib projecting downwardly from the peripheral edge of the bottom wall along at least a portion of the bottom wall peripheral edge and at least some of the groups of elongated indentations extending between the outer rib and the inner rib.

10. The waste container according to claim 9 wherein at least some of the elongated indentations extend past the rear edge of the bottom wall and at least partially up the peripheral wall.

11. The waste container according to claim 2 wherein the inner rib circumscribes an interior portion of the bottom surface of the bottom wall.

12. The waste container according, to claim 11 wherein at least some of the elongated indentations extend beyond the peripheral edge of the bottom wall and at least partially up the peripheral wall.

13. The waste container according to claim 11 and further comprising an outer rib projecting downwardly from at least a portion of the peripheral edge of the bottom wall and the elongated indentations extend from the outer rib to the inner rib.

14. The waste container according to claim 13 wherein the elongated indentations each define a longitudinal axis and have a U-shaped cross section transverse to the longitudinal axis.

15. The waste container according to claim 14 wherein the thickness of the indentations is substantially constant.

16. The waste container according to claim 14 wherein the elongated indentations are arranged in groups of adjacent elongated indentations and the transverse cross section of the group of elongated indentations forms a truncated sinusoidal-like wave form.

17. The waste container according to claim 16 wherein the wheel assembly further comprises an axle mounted to the body and a pair of wheels mounted to the axle, with at least the axle being rotatable relative to the body or the wheels being rotatable relative to the axle.

18. A waste container for the storage of waste comprising:

a body having a bottom wall with a peripheral edge and a peripheral wall extending upwardly from the bottom wall peripheral edge and terminating in an upper edge to define a waste compartment with an open top;

an inner rib projecting downwardly from a bottom surface of the bottom wall inwardly of the bottom wall peripheral edge; and

a plurality of corrugations formed in the bottom wall and extending from the bottom wall peripheral edge to the inner rib wherein the corrugations and inner rib cooperate to form a structural support for the bottom wall, with the portion of the bottom wall interior of the inner rib being substantially free of corrugations.

19. The waste container according to claim 18 wherein the inner rib circumscribes an interior portion of the bottom surface of the bottom wall.

20. The waste container according to claim 19 and further comprising an outer rib projecting downwardly from at least a portion of the peripheral edge of the bottom wall and the corrugations extend from the outer rib to the inner rib.

21. The waste container according to claim 20 wherein the corrugations have a substantially constant thickness.

22. The waste container according to claim 20 wherein the corrugations comprise elongated indentations.

23. The waste container according to claim 18 where in at least some of the elongated indentations extend beyond the peripheral edge of the bottom wall and at least partially up the peripheral wall.

24. The waste container according to claim 21 wherein the corrugations comprise elongated indentations.

25. The waste container according to claim 24 wherein at least some of the elongated indentations extend beyond the peripheral edge of the bottom wall and at least partially up the peripheral wall.

26. The waste container according to claim 25 wherein each elongated indentation defines a longitudinal axis and a U-shaped cross section transverse to the longitudinal axis.

27. The waste container according to claim 26 wherein the corrugated indentations are arranged in groups of adjacent elongated indentations wherein the transverse cross section of the group of elongated indentations forms a truncated sinusoidal-like wave form.

28. The waste container according to claim 27 and further comprising a wheel assembly comprising an axle mounted to the body and a pair of wheels mounted to the axle, with at least the axle being rotatable relative to the body or the wheels being rotatable relative to the axle.