Spill containing refrigerator shelf assembly

• US 8,286,561 B2
• Filed: 09/18/2009
• Issued: 10/16/2012
• Est. Priority Date: 06/27/2008
• Status: Active Grant

• Current Assignee: SSW Advanced Technologies LLC
• Original Assignee: SSW Holding Company Incorporated
• Inventors: Driver, John P., McMillin, Matthew, Nall, Bradley M.
• Primary Examiner(s): Chen, Jose V
• Application Number:
  US12/562,920
• Publication Number:
  US 20100102693A1
• Time in Patent Office: 1,124 Days
• Field of Search: 108/108, 108/161, 108/106, 108/27, 312/408, 312/404, 312/351, 211/191, 211/41.18, 211/41.184, 428/212
• US Class Current: 108/27
• CPC Class Codes: A47B 95/043 Protecting rims, buffers or the like
• CPC Class Codes: A47B 96/02 Shelves movable shelves coupled to doors A47B96/16
• CPC Class Codes: A47B 96/021 Structural features of shelf bases
• CPC Class Codes: A47B 96/027 Cantilever shelves
• CPC Class Codes: A47B 96/028 characterised by support bracket location means, e.g. fixing means between support bracket and shelf
• CPC Class Codes: A47B 96/062 for glass shelves
• CPC Class Codes: C03C 15/00 Surface treatment of glass, not in the form of fibres or filaments, by etching etching or surface-brightening compositions, in general C09K13/00
• CPC Class Codes: C03C 17/30 with silicon-containing compounds
• CPC Class Codes: C03C 2217/76 Hydrophobic and oleophobic coatings
• CPC Class Codes: C03C 2218/31 Pre-treatment
• CPC Class Codes: C03C 2218/34 Masking
• CPC Class Codes: F24C 15/10 Tops, e.g. hot plates; Rings cover lids or splash guards F24C15/12; spillage trays or grooves F24C15/14
• CPC Class Codes: F25D 2325/022 Shelves made of glass or ceramic
• CPC Class Codes: F25D 2400/22 Cleaning means for refrigerating devices
• CPC Class Codes: F25D 25/02 by shelves
• CPC Class Codes: F25D 25/024 Slidable shelves
• CPC Class Codes: Y10T 29/49888 Subsequently coating

Abstract

The specification discloses a method for containing spills on shelving and the like, and the resulting support members made in accordance with the method, by providing the generally flat top surface of a support with a hydrophobic surface which is arranged in a spill containment pattern and which is generally in the plane of the top surface of the support. The majority of the top surface of the support consists of one or more spill containment areas which are of a non-hydrophobic nature and which are bounded by the hydrophobic surfaces, such that spills on the shelving collect in the non-hydrophobic spill containment area or areas and are prevented from spreading by the hydrophobic surfaces.

Claims

1. A shelf assembly comprising:

a shelf panel having a generally flat top surface which is capable of supporting articles which may be placed on said shelf panel;

a hydrophobic surface applied in a spill containment pattern on the said top surface;

wherein the majority of the surface area of said top surface of the shelf panel is not hydrophobic, thereby providing one or more non-hydrophobic central portions bounded by said spill containment pattern of said hydrophobic surface.

2. The shelf assembly of claim 1, wherein said spill containment pattern is a continuous border which defines a single non-hydrophobic central portion within said border.

3. The shelf assembly of claim 1, wherein said spill containment pattern is a continuous border located near the perimeter of the top surface of the shelf panel.

4. The shelf assembly of claim 1, wherein said spill containment pattern is located along the perimeter of the top surface of the shelf panel.

5. The shelf assembly of claim 1, wherein said spill containment pattern comprises a first continuous border and a second continuous border spaced from said first continuous border, the first continuous border located along the perimeter of the top surface of the shelf panel, and the second continuous border spaced inwardly from said first continuous border such that the second continuous border completely bounds a non-hydrophobic central portion of the top surface of the shelf panel, and the first and second continuous borders together define between them area a non-hydrophobic ring portion for containing overflow from said non-hydrophobic central portion.

6. The shelf assembly of claim 1, wherein said spill containment pattern is in the form of a grid pattern on the top surface of the shelf panel and wherein said grid pattern defines a plurality of non-hydrophobic central portions on the top surface of the shelf panel, each of the plurality of non-hydrophobic central portions completely bounded by a portion of the grid pattern.

7. The shelf assembly of claim 1, wherein said shelf panel is comprised of a material chosen from the group consisting of glass, plastic, metal and combinations thereof.

8. The shelf assembly of claim 1, wherein the shelf panel is transparent.

9. The shelf assembly of claim 8, wherein the shelf panel is glass.

10. The shelf assembly of claim 7, wherein the hydrophobic surface is transparent.

11. The shelf assembly of claim 1, wherein at least some portion of the hydrophobic surface is colored.

12. The shelf assembly of claim 11, wherein the hydrophobic surface contains a colored portion in a form chosen from the group consisting of a pattern, a company name, a company logo and combinations thereof.

13. The shelf assembly of claim 1, wherein the hydrophobic surface comprises:

a ceramic frit layer adjacent to and bonded to the top surface of said shelf panel; and

a hydrophobic compound coated over the ceramic frit layer.

14. The shelf assembly of claim 13, wherein said ceramic frit layer contains additive particles that create roughness in a top surface of the ceramic frit layer.

15. The shelf assembly of claim 13, wherein at least a portion of said ceramic frit layer is colored.

16. The shelf assembly of claim 1, wherein said hydrophobic surface comprises a hydrophobic coating over a roughened area in the surface of said shelf panel.

17. The shelf assembly of claim 16, wherein said roughened area is made by binding comprises a plurality of particles bound to the surface of the shelf panel.

18. The shelf assembly of claim 1, wherein said hydrophobic surface comprises a coating of hydrophobic particles on the surface of said shelf panel.

19. The shelf assembly of claim 1, wherein said hydrophobic surface comprises a hydrophobic compound applied over or within the matrix of a cured sol gel composition.

20. The shelf assembly of claim 1, wherein said hydrophobic surface comprises a metal oxide primer with an integrated hydrophobic compound.

21. The shelf assembly of claim 1, wherein said hydrophobic surface comprises a hydrophobic coating applied over a metal oxide primer.

22. The shelf assembly of claim 1, wherein said hydrophobic surface comprises a hydrophobic compound comprising a variety of molecular chain lengths to create a coating with surface irregularities.

23. The shelf assembly of claim 1, wherein the hydrophobic surface arranged in the spill containment pattern has a thickness in the range of approximately—

0.001 microns to approximately 250 microns.

24. The shelf assembly of claim 1, wherein the hydrophobic surface comprises a hydrophobic compound selected from the group consisting of fluorocarbons, fluoroalkyl silanes, fluoroalkoxy silanes, fluoroalkyl alkyl silanes, and combinations thereof.

25. A method of manufacturing a shelf capable of containing liquid spills thereon comprising:

providing a panel having a generally flat top surface which is capable of supporting articles which may be placed on said panel;

applying a hydrophobic surface arranged in a spill containment pattern generally in the plane of said top surface;

leaving the majority of the surface area of said top surface of the panel non-hydrophobic, thereby providing one or more non-hydrophobic central portions bounded by the spill containment pattern of the hydrophobic surface.

26. The method of claim 25, wherein applying a hydrophobic surface comprises:

applying a ceramic frit to the top surface of the panel in a spill containment pattern;

curing the ceramic frit to couple the ceramic frit to the top surface of the panel;

applying a hydrophobic compound to the cured ceramic frit; and

curing the hydrophobic compound.

27. The method of claim 26, wherein curing the ceramic frit comprises heating the ceramic frit to a temperature in a range of about 1000°

F. to about 1400°

F.

28. The method of claim 26, wherein curing the hydrophobic compound comprises heating the hydrophobic compound to a temperature in a range of about 100°

F. to about 600°

F.

29. The method of claim 26, wherein curing the hydrophobic compound comprises exposing the hydrophobic compound to ambient temperature.

30. The method of claim 26, wherein applying the hydrophobic compound comprises applying a hydrophobic solution comprising the hydrophobic compound dispersed or dissolved in a solvent to the cured ceramic frit.

31. The method of claim 26, further comprising etching the cured ceramic frit with an etching solution prior to applying the hydrophobic compound to the cured ceramic frit.

32. The method of claim 26, further comprising etching the entire panel including the cured ceramic frit prior to applying the hydrophobic compound to the cured ceramic frit.

33. A shelf assembly, comprising:

a generally flat shelf panel having a top surface and a bottom surface, the top surface capable of supporting articles;

a hydrophobic surface applied in a spill containment pattern generally in the plane of said top surface;

at least one non-hydrophobic central portion completed completely bounded by the spill containment pattern for containing liquids on the top surface of the shelf panel; and

at least one support bracket attached to the bottom surface of the shelf panel such that the top surface of the shelf panel is completely free from intrusion or other obstruction, thereby maximizing the available shelf space on the top surface of the shelf panel.

35. The shelf assembly of claim 33, further comprising an adhesive material disposed between the support bracket and bottom surface of the shelf panel thereby attaching the support bracket to the shelf panel.

36. The shelf assembly of claim 35, wherein the adhesive material comprises a clear adhesive material.

37. The shelf assembly of claim 33, wherein the at least one support bracket includes a pair of support brackets, each of which is adhered to the bottom surface of the shelf panel.

38. The shelf assembly of claim 33, wherein the at least one support bracket is disposed entirely below the top surface of the shelf panel.

39. The shelf assembly of claim 33, wherein the at least one support bracket is disposed entirely opposite the shelf panel from the top surface of the shelf panel.

40. The shelf assembly claim 33, wherein the at least one support bracket includes a top surface and the adhesive material is disposed between the top surface of the support bracket and the bottom surface of the shelf panel.

41. The shelf assembly of claim 40, wherein the top surface of the support bracket defines a channel receiving the adhesive material.

42. The shelf assembly of claim 33, wherein the at least one support bracket includes a generally L-shaped cross-section.

43. The shelf assembly of claim 33, wherein said spill containment pattern is a continuous border which defines a single non-hydrophobic central portion within said border.

44. The shelf assembly of claim 33, wherein said spill containment pattern is a continuous border located near the perimeter of the top surface of the shelf panel.

45. The shelf assembly of claim 33, wherein said spill containment pattern is located along the perimeter of the top surface of the shelf panel.

46. The shelf assembly of claim 33, wherein said spill containment pattern comprises a first continuous border and a second continuous border spaced from said first continuous border, the first continuous border located along the perimeter of the top surface of the shelf panel, and the second continuous border spaced inwardly from said first continuous border such that the second continuous border completely bounds a non-hydrophobic central portion of the top surface of the shelf panel, and the first and second continuous borders together define between them area non-hydrophobic ring portion for containing overflow from said non-hydrophobic central portion.

47. The shelf assembly of claim 33, wherein said spill containment pattern is in the form of a grid pattern on the top surface of the shelf panel and wherein said grid pattern defines a plurality of non-hydrophobic central portion on the top surface of the shelf panel, each of the plurality of non-hydrophobic central portions completely bounded by a portion of the grid pattern.

48. The shelf assembly of claim 33, wherein said shelf panel is comprised of a material chosen from the group consisting of glass, plastic, metal and combinations thereof.

49. The shelf assembly of claim 33, wherein the shelf panel is transparent.

50. The shelf assembly of claim 33, wherein the shelf panel is glass.

51. The shelf assembly of claim 33, wherein the hydrophobic surface is transparent.

52. The shelf assembly of claim 33, wherein at least some portion of the hydrophobic surface is colored.

53. The shelf assembly of claim 33, wherein the hydrophobic surface contains a colored portion in a form chosen from the group consisting of a pattern, a company name, a company logo and combinations thereof.

54. The shelf assembly of claim 33, wherein the hydrophobic surface comprises:

a ceramic frit layer adjacent to the top surface of said shelf panel; and

a hydrophobic compound coated over the ceramic frit layer.

55. The shelf assembly of claim 54, wherein said ceramic frit layer contains additive particles that create roughness in a top surface of the ceramic frit layer.

56. The shelf assembly of claim 54, wherein at least a portion of said ceramic frit layer is colored.

57. The shelf assembly of claim 33, wherein said hydrophobic surface comprises a hydrophobic coating over a roughened area in the surface of said shelf panel.

58. The shelf assembly of claim 57, wherein said roughened area is made by binding comprises as plurality of particles bound to surface of the shelf panel.

59. The shelf assembly of claim 33, wherein said hydrophobic surface comprises a coating of hydrophobic particles on the surface of said shelf panel.

60. The shelf assembly of claim 33, wherein said hydrophobic surface comprises a hydrophobic compound applied over or within the matrix of a cured sol gel composition.

61. The shelf assembly of claim 33, wherein said hydrophobic surface comprises a metal oxide primer with an integrated hydrophobic compound.

62. The shelf assembly of claim 33, wherein said hydrophobic surface comprises a hydrophobic coating applied over a metal oxide primer.

63. The shelf assembly of claim 33, wherein said hydrophobic surface comprises a hydrophobic compound comprising a variety of molecular chain lengths to create a coating with surface irregularities.

64. The shelf assembly of claim 33, wherein the hydrophobic surface arranged in the spill containment pattern has a thickness in the range of approximately 0.001 microns to approximately 250 microns.

34. A shelf assembly, comprising:

a generally flat shelf panel having a top surface and a bottom surface, the top surface capable of supporting articles;

a hydrophobic surface applied in a spill containment pattern generally in the plane of said top surface;

at least one non-hydrophobic central portion completed completely bounded by the spill containment pattern for containing liquids on the top surface of the shelf panel; and

at least one support bracket attached only to the bottom surface of the shelf panel such that the top surface of the shelf panel is completely free from intrusion or other obstruction, thereby maximizing the available shelf space on the top surface of the shelf panel.