SPACER FOR A WAREHOUSE RACK-AISLE HEAT TRANSFER SYSTEM
A spacer for use in stacking a plurality of cases containing a quantity of product on a pallet to form a pallet assembly and to facilitate heat transfer to or from the product is described. Installations for retaining a quantity of product at a desired temperature including a storage warehouse space including a rack-aisle heat transfer system incorporating pallet assemblies including spacers of the present disclosure are also described. The spacer of the present disclosure is useful to transfer heat to and from a quantity of warehouse product through both conduction and forced convection. The spacers provide an airflow path through at least one airflow channel between opposing sides of the pallet assembly so that airflow is not lost through sides adjacent to the opposing sides of the pallet assembly. The spacers further provide a consistent support surface for cases positioned above and below the spacers.
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1. Technical Field
The present disclosure relates to a warehouse that is capable of altering and/or holding steady the temperature of a quantity of product housed in cases forming pallet assemblies and storing such product, e.g., bulk foods. More particularly, the present disclosure relates to spacing, stacking and heat transfer structures used in such a warehouse.
2. Description of the Related Art
Two-stage freezer warehouses are known in which large pallets of items including meats, fruit, vegetables, prepared foods, and the like are frozen in blast rooms of a warehouse and then are moved to a storage part of the warehouse to be maintained at a frozen temperature until their removal. Such two-stage freezer warehouses require separate blast and storage rooms that encompass a relatively large amount of space.
U.S. patent application Ser. No. 12/877,392 entitled “Rack-Aisle Freezing System for Palletized Product”, filed on Sep. 8, 2010, the entire disclosure of which is hereby explicitly incorporated by reference herein, relates to an improved system for freezing food products. Shown in
Air handlers 8, e.g., chillers (
Adjacent pairs of racking structures 14 (
U.S. patent application Ser. No. 13/074,098 entitled “Swing Seal for a Rack-Aisle Freezing and Chilling System”, filed on Mar. 29, 2011, the entire disclosure of which is hereby explicitly incorporated by reference herein discloses a top periphery seal useable to seal an intake opening as described above and which automatically adjusts to the height of pallet assembly 52a as illustrated in
In the above described installation, utilizing “egg carton” spacers 20, heat transfer from chilled ambient air in warehouse 2 to the products contained in cases 22 is effected through forced convection which is facilitated by the irregular shape of egg carton spacers 20 to allow air flow in all directions through pallet assembly 52a. Alternative spacers such as wood slat spacers may also be utilized to separate cases 22 on pallet 4; however, spacers employed in warehouse installations utilized to keep the quantity of product at a desired temperature through forced convection are designed to allow for air flow in all directions. Because air can flow in all directions through predicate spacers 20 described above, thorough cooling or thawing of a product may not be achieved, as air entering between adjacent rows of product cases may exit pallet assembly 52a before encountering all of the cases of the row in question. Further, crushing and/or drooping of cases 22 may restrict airflow, as described above.
Another mechanism of heat transfer, i.e., conduction, can also be utilized to transfer heat to or from product. Predicate spacers 20 described above are made either of wood or plastic, which is not sufficiently thermally conductive to effect heat transfer via conduction. Therefore, in installations utilizing such spacers, heat transfer is effected solely by the use of forced convection.
SUMMARYThe present disclosure relates to a spacer for use in stacking a plurality of cases containing a quantity of product on a pallet to form a pallet assembly and to facilitate heat transfer to or from the product. The present disclosure further relates to installations for retaining a quantity of product at a desired temperature including a storage warehouse space including a rack-aisle heat transfer system incorporating pallet assemblies including spacers of the present disclosure. The spacer of the present disclosure is formed of a material having a thermal conductivity of at least 3 W/m·K, at least 5 W/m·K, or at least 10 W/m·K and includes at least one airflow channel which provides an air flow path through at least one airflow channel between opposing sides of the pallet assembly so that air flow is not lost through sides connecting the air inlet and outlet of the spacer channels of the pallet assembly.
The disclosure, in one form thereof, provides an installation for maintaining a quantity of product at a desired temperature. The installation of this form of the present invention includes a plurality of pallet assemblies, a storage warehouse space having a plurality of racks sized for receiving the plurality of pallet assemblies arranged in rows and columns on the racks, the pallet assemblies loaded with a quantity of product to be maintained at a desired temperature, each of the plurality of racks positioned adjacent to an aisle, so that a forklift can access each of the plurality of pallet assemblies. The installation further includes at least one air handler connected to the warehouse space to condition an ambient air in the warehouse space, the at least one air handler having an output sufficient to maintain a temperature of the ambient air in the warehouse space at a desired temperature. At least one air flow chamber is in fluid communication with a plurality of air intake openings formed through each of the plurality of racks. At least one fan is in fluid communication with the at least one air flow chamber, the fan operable to create a circulation of the ambient air flowing through the plurality of air intake openings into the at least one air flow chamber and back to the warehouse space. Each of the plurality of pallet assemblies includes a pallet, a plurality of cases containing the quantity of product; and at least one spacer, each spacer comprising a substantially planar first surface extending in an x-y plane of the Cartesian coordinate system, the planar first surface formed of first surface material, the planar first surface defining a spacer outer perimeter of a size and shape about congruent to the outer perimeter of the pallet; a substantially planar second surface formed of second surface material and a plurality of supports extending between the first surface and the second surface along a trajectory having a directional component along a z-axis of the Cartesian coordinate system. Each of the supports of the plurality of supports space the first surface from the second surface, the first surface, the second surface and the supports defining at least one air flow channel, the at least one air flow channel spanning a pair of opposing sides of the at least one spacer so that one of the pair of opposing sides of the spacer comprises an air flow inlet and the other of the opposing sides comprises an air flow outlet. As air flow enters the at least one air flow channel at the inlet traverses the channel and exits the channel at the outlet to define an air filter trajectory from the inlet to the outlet along an x-axis of the Cartesian coordinate system. The plurality of supports substantially preclude the air flow from exiting the channel along a trajectory defined by the y-axis of the Cartesian coordinate system. Each of the plurality of cases are stacked on a pallet of one of the plurality of pallet assemblies in a plurality of case layers which are separated from each other by a plurality of the spacers.
The above mentioned and other features and objects of this disclosure, and the manner of attaining them, will become more apparent and the disclosure itself will be better understood by reference to the following description of embodiments of the disclosure taken in conjunction with the accompanying drawings, wherein:
Corresponding reference characters indicate corresponding parts throughout the several views. Although the exemplifications set out herein illustrate embodiments of the disclosure, in several forms, the embodiments disclosed below are not intended to be exhaustive or to be construed as limiting the scope of the disclosure to the precise forms disclosed.
DETAILED DESCRIPTIONReferring to
Substantially planar first surface 32 and substantially planar second surface 34 are both formed from plates of material having a thermal conductivity of at least 3 W/m·K, at least 5 W/m·K, or at least 10 W/m·K so that spacer 30 is operable to effect heat transfer with product contained in cases 22 via conduction. Referring to
Pallet assemblies 52 form a part of warehouse installation 2 depicted, e.g., in
With pallet assemblies 52 arranged in rows and columns on racks 14, warehouse installation 2 can be utilized to maintain the quantity of product contained in cases 22 at a desired temperature. As illustrated in
As described above, racks 14 define air intake openings fluidly connected to a chamber 6, which, in the exemplary embodiment illustrated is enclosed by a pair of end walls 15 and top panel 17. Pallet assemblies 52 are disposed and sealed against the air intake openings formed in racks 14. Referring to
As mentioned above, each pallet assembly 52 includes a plurality of cases 22 stacked atop a pallet 4, with spacers 30 separating each layer of cases 22. Referring to
Each of first surface 32 and second surface 34 are sized and shaped to be about congruent to the outer perimeter of pallet 4. In one exemplary embodiment, pallet 4 comprises a standard 40 inch by 48 inch rectangular outer perimeter. With such a pallet, first surface 32 and second surface 34 will both be substantially rectangular in shape and about 40 inches by about 48 inches. Stated another way, first surface 32 and second surface 34 are both nominally rectangular and nominally measure about 40 inches by 48 inches. In certain alternative embodiments, spacers 30 will be slightly oversized with respect to pallet 4, e.g., by having an overhang of up to an inch relative to the perimeter of pallet 4. These embodiments are also considered to be sized and shaped “about congruent” to the outer perimeter of pallet 4. Alternative pallet sizes, such as a standard European pallet may be utilized. Spacers 30 will be about congruent to whatever pallet they are designed for use with.
In certain embodiments, spacers 30 will be oversized along the z-axis of the Cartesian coordinate system depicted in
Supports 36 extend along the x-axis of the Cartesian coordinate system depicted in
Each support 36 is secured to an aluminum plate defining first surface 32 and a second aluminum plate defining second surface 34. In an exemplary embodiment, the opposing aluminum plates are formed of 14 gauge aluminum. When formed of aluminum, spacer 30 may have a thermal conductivity of at least 10 W/m·K. Supports 36 may be secured to the opposing plates using a variety of techniques including welding. Alternative materials of construction may be utilized to form spacers 30, including various metals and polymers such as high density polyethylene or polycarbonate may be utilized. If polymeric material is utilized to form spacers 30, then they can have a thermal conductivity of at least 3 W/m·K or at least 5 W/m·K.
Air flow channels 38 defined by supports 36 and the opposing plates on which first surface 32 and second surface 34 of spacer 30 are formed provide air flow generally along the x-axis of the Cartesian coordinate system depicted in
Generally speaking, the top plate and bottom plate of spacers 30 from which substantially planar first surface 32 and substantially planar second surface 34 are defined, are formed of a material having a thermal conductivity of at least 3 W/m·K (watts per meter kelvin), at least 5 W/m·K, or at least 10 W/m·K. Therefore, heat transfer between spacers 30 and the product contained in cases 22 will occur via conduction as well as forced convection (with the circulating air flow of warehouse 2 contacting cases 22 between spacers 30). Because of the consistent surface provided by substantially planar first surface and substantially planar second surface, cases 22 will be well supported above spacers 30 and will not be able to sag to obscure air flow through air flow channels 38. Further, this consistent surface will provide excellent conduction of heat energy between the product contained within cases 22 and spacers 30. Generally, a metal will be used to form the top plate and bottom plate of spacers 30. To avoid the potential of cases 22 sticking to first surface 32 and second surface 34, the plates forming these surface may be coated with a non-stick material such as polytetrafluorethylene (PTFE), such as Teflon® sold by DuPont. In an alternative configuration a single use non-stick coating of, e.g., vegetable oil may be applied to substantially planar first surface 32 and substantially planar second surface 34.
In certain embodiments of the present disclosure, substantially planar first surface 32 and substantially planar second surface 34 include perforations 44, as illustrated in
In an embodiment employing perforations 44, suction gripping surfaces 46 defining continuous surfaces free of perforations 44 sized to receive a suction gripping device, as illustrated, e.g., in
As described above, spacer 30 may be formed of a 14 gauge aluminum. Spacer 30 may also be formed of a 304 stainless steel material in a 14 gauge or smaller size. Mild steels may also be utilized to form spacers 30. In the embodiment illustrated in
In the alternative embodiment illustrated in
Various exemplary spacers of the present invention and their corresponding parts are denoted with primed reference numerals and/or reference numerals including an alphabetic designator such that similar parts of the various embodiments of spacer 30 include the same numeric reference. Any of the features described with respect to any of the various embodiments of spacer 30 described above may be utilized in conjunction with any other feature of any of the alternative embodiment spacers described in the present application.
While this disclosure has been described as having an exemplary design, the present invention can be further modified within the spirit and scope of this disclosure. This application is therefore intended to cover any variations, uses, or adaptations of the disclosure using its general principles. Further, this application is intended to cover such departures from the present disclosure as come within known or customary practice in the art to which this disclosure pertains and which fall within the limits of the appended claims.
Claims
1. An installation for maintaining a quantity of product at a desired temperature, comprising:
- a plurality of pallet assemblies;
- a storage warehouse space having a plurality of racks sized for receiving the plurality of pallet assemblies arranged in rows and columns on racks, the pallets assemblies loaded with a quantity of product to be maintained at the desired temperature, each of said plurality of racks positioned adjacent to an aisle, whereby a forklift can access each of the plurality of pallets assemblies;
- at least one air handler operably connected to said warehouse space to condition an ambient air in said warehouse space, said at least one air handler having an output sufficient to maintain a temperature of the ambient air in said warehouse space at a desired temperature;
- at least one air flow chamber in fluid communication with a plurality of air intake openings formed through each of said plurality of racks;
- at least one fan in fluid communication with said at least one air flow chamber, said fan operable to create a circulation of the ambient air flowing through said plurality of air intake openings, into said at least one air flow chamber and back to said warehouse space;
- at least one of said plurality of pallet assemblies comprising: a pallet; a plurality of cases containing the quantity of product; and at least one spacer, each said spacer comprising: a substantially planar first surface extending in an x-y plane of a Cartesian coordinate system, said planar first surface formed of a first surface material, said planar first surface defining a spacer outer perimeter of a size and shape about congruent to the outer perimeter of the pallet; a substantially planar second surface formed of a second surface material; and a plurality of supports extending between said first surface and said second surface along a trajectory having a directional component along a z-axis of the Cartesian coordinate system, whereby each of said plurality of supports space said first surface from said second surface, said first surface, said second surface and said supports defining at least one airflow channel, said at least one airflow channel spanning a pair of opposing sides of said at least one spacer, wherein one of said pair of opposing sides of said at least one spacer comprises an airflow inlet and the other of said pair of opposing sides of said at least one spacer comprises an airflow outlet, whereby an airflow enters said at least one airflow channel at said airflow inlet, traverses said channel and exits said channel at said airflow outlet to define an airflow trajectory from said inlet to said outlet along an x-axis of the Cartesian coordinate system, whereby said plurality of supports substantially preclude the airflow from exiting said channel along a trajectory defined by the y-axis of the Cartesian coordinate system; each of said plurality of cases stacked on said pallet of one of said plurality of pallet assemblies in a plurality of case layers, each of said plurality of case layers separated from another of said plurality of case layers by one of a plurality of said spacers; and
- said at least one of said plurality of pallet assemblies received on one of said plurality of racks and associated with one of said plurality of air intake openings, whereby said circulation created by said at least one fan causes the airflow through the channel in the at least one spacer.
2. The installation of claim 1, wherein said at least one airflow channel comprises a plurality of airflow channels.
3. The installation of claim 1, wherein said first surface and said second surface are both coated with polytetrafluorethylene.
4. The installation of claim 1, wherein said first surface material forming said substantially planar first surface of said at least one spacer has a thermal conductivity of at least 3 W/m·K, and wherein said second surface material forming said substantially planar second surface of said at least one spacer has a thermal conductivity of at least 3 W/m·K.
5. The installation of claim 1, wherein said first surface material forming said substantially planar first surface of said at least one spacer has a thermal conductivity of at least 5 W/m·K, and wherein said second surface material forming said substantially planar second surface of said at least one spacer has a thermal conductivity of at least 5 W/m·K.
6. The installation of claim 1, wherein said first surface material forming said substantially planar first surface of said at least one spacer has a thermal conductivity of at least 10 W/m·K, and wherein said second surface material forming said substantially planar second surface of said at least one spacer has a thermal conductivity of at least 10 W/m·K.
7. The installation of claim 1, wherein said at least one air handler comprises a chiller operable to maintain the temperature of the ambient air in said warehouse space at the desired temperature of −5° F. to −30° F.
8. The installation of claim 1, wherein said spacer outer perimeter substantially defines a rectangle measuring about 40 inches by about 48 inches.
9. The installation of claim 1, wherein said spacer outer perimeter substantially defines a rectangle measuring about 42 inches by about 48 inches.
10. The installation of claim 1, wherein said spacer outer perimeter substantially defines a rectangle measuring about 41 inches by about 48 inches.
11. The installation of claim 1, wherein said spacer defines a load capacity for the quantity of product of about 1800 pounds.
12. The installation of claim 1, wherein said spacer defines a load capacity for the quantity of product of about 3600 pounds.
13. The installation of claim 1, wherein said first surface includes a plurality of perforations, said perforations are arranged such that at least one area of continuous surface free of said perforations and sized to receive a suction gripping device is provided on said first surface, said at least one area of continuous surface free of said perforations and sized to receive the suction gripping device comprising an area of 4 sq. in.
14. The installation of claim 1, wherein said first surface and said second surface are both formed of an aluminum material.
15. The installation of claim 1, wherein said first surface and said second surface are both formed of a polycarbonate material.
16. The installation of claim 1, wherein said first surface comprises a first surface of a first 14 gauge aluminum plate and said second surface comprises a first surface of a second 14 gauge aluminum plate.
17. The installation of claim 1, wherein said first surface and said second surface are both formed of a 304 stainless steel material.
18. The installation of claim 1, wherein said first surface and said second surface are both formed of a mild steel.
19. The installation of claim 1, wherein said first surface and said second surface are both formed of a polymer.
20. The installation of claim 1, wherein said supports are spaced from each other by about 4-6 inches measured along the y-axis of the Cartesian coordinate system, and wherein said supports extend along a trajectory defined by the z-axis to a height of about 0.25 to 3 inches.
21. The installation of claim 1, wherein said spacer further comprises a lip extending from said spacer outer perimeter.
22. The spacer of claim 1, wherein said first surface and said second surface are both coated with polytetrafluorethylene.
23. A spacer for supporting a plurality of cases on a pallet, each of said plurality of cases containing a quantity of product to be maintained at a desired temperature, the spacer comprising:
- a substantially planar first surface extending in an x-y plane of a Cartesian coordinate system, said planar first surface formed of a first surface material, said planar first surface defining a spacer outer perimeter of a size and a shape about congruent to the outer perimeter of the pallet;
- a substantially planar second surface formed of a second surface material; and
- a plurality of supports extending between said first surface and said second surface along a trajectory having a directional component along a z-axis of the Cartesian coordinate system, each of said plurality of supports spacing said first surface from said second surface, said first surface, said second surface and said supports defining at least one airflow channel, said at least one airflow channel spanning a pair of opposing sides of said spacer, wherein one of said pair of opposing sides of said spacer comprises an airflow inlet and the other of said pair of opposing sides of said spacer comprises an airflow outlet, whereby an airflow enters said at least one airflow channel at said airflow inlet, traverses said channel and exits said channel at said airflow outlet to define an airflow trajectory from said inlet to said outlet along an x-axis of the Cartesian coordinate system, whereby said supports substantially preclude the airflow from exiting said channel along a trajectory defined by the y-axis of the Cartesian coordinate system.
24. The spacer of claim 23, wherein said at least one airflow channel comprises a plurality of airflow channels.
25. The spacer of claim 22, wherein said first surface material forming said substantially planar first surface of the spacer has a thermal conductivity of at least 3 W/m·K, and wherein said second surface material forming said substantially planar second surface of the spacer has a thermal conductivity of at least 3 W/m·K.
26. The spacer of claim 22, wherein said first surface material forming said substantially planar first surface of the spacer has a thermal conductivity of at least 5 W/m·K, and wherein said second surface material forming said substantially planar second surface of the spacer has a thermal conductivity of at least 5 W/m·K.
27. The spacer of claim 22, wherein said first surface material forming said substantially planar first surface of the spacer has a thermal conductivity of at least 10 W/m·K, and wherein said second surface material forming said substantially planar second surface of the spacer has a thermal conductivity of at least 10 W/m·K.
28. The spacer of claim 23, wherein said spacer outer perimeter substantially defines a rectangle measuring about 40 inches by about 48 inches.
29. The spacer of claim 23, wherein said spacer outer perimeter substantially defines a rectangle measuring about 42 inches by about 48 inches.
30. The spacer of claim 23, wherein said spacer outer perimeter substantially defines a rectangle measuring about 41 inches by about 48 inches.
31. The spacer of claim 23, wherein said spacer defines a load capacity for the quantity of product of about 1800 pounds.
32. The spacer of claim 23, wherein said spacer defines a load capacity for the quantity of product of about 3600 pounds.
33. The spacer of claim 23, wherein said first surface includes a plurality of perforations, said perforations are arranged such that at least one area of continuous surface free of said perforations and sized to receive a suction gripping device is provided on said first surface, wherein said at least one area of continuous surface free of said perforations and sized to receive a suction gripping device comprises an area of 4 sq. in.
34. The spacer of claim 23, wherein said first surface and said second surface are both formed of an aluminum material.
35. The spacer of claim 23, wherein said first surface and said second surface are both formed of a polymer.
36. The spacer of claim 23, wherein said first surface comprises a first surface of a first 14 gauge aluminum plate and said second surface comprises a first surface of a second 14 gauge aluminum plate.
37. The spacer of claim 18, wherein said first surface and said second surface are both formed of a 304 stainless steel material.
38. The spacer of claim 23, wherein said first surface and said second surface are both formed of a mild steel.
39. The spacer of claim 23, wherein said supports are spaced from each by other by about 4-6 inches measured along the y-axis of the Cartesian coordinate system, and wherein said supports extend along a trajectory defined by the z-axis to a height of about 0.25 to 3 in.
40. The spacer of claim 23, wherein said spacer further comprises a lip extending from said spacer outer perimeter.
41. A method of maintaining a quantity of a product at a desired temperature, comprising:
- preparing a pallet assembly by stacking a plurality of cases and a plurality of spacers on a pallet so that the plurality of cases are separated from each other along a z-axis of a Cartesian coordinate system by the spacers, the spacers comprising: a substantially planar first surface extending in an x-y plane of the Cartesian coordinate system, said planar first surface formed of a first surface material, said planar first surface defining a spacer outer perimeter of a size and shape about congruent to the outer perimeter of the pallet; a substantially planar second surface formed of a second surface material; and a plurality of supports extending between said first surface and said second surface along a trajectory having a directional component along a z-axis of the Cartesian coordinate system, whereby each of said plurality of supports space said first surface from said second surface, said first surface, said second surface and said supports defining at least one airflow channel, each of said plurality of airflow channels spanning a pair of opposing sides of at least one of said plurality of spacers, wherein one of said pair of opposing sides of said at least one spacer comprises an airflow inlet and the other of said pair of opposing sides of said at least one spacer comprises an airflow outlet, whereby an airflow enters said at least one airflow channel at said airflow inlet, traverses said channel and exits said channel at said airflow outlet to define an airflow trajectory from said inlet to said outlet along an x-axis of the Cartesian coordinate system, whereby said support substantially precludes the airflow from exiting said channel along a trajectory defined by the y-axis of the Cartesian coordinate system;
- directing a thermally conditioned airflow through the at least one airflow channel of the spacers to adjust the temperature of the product contained in the plurality of cases to the desired temperature.
42. The method of claim 41, wherein said at least one airflow channel comprises a plurality of airflow channels.
43. The spacer of claim 41, wherein said first surface and said second surface are both coated with polytetrafluorethylene.
44. The method of claim 41, wherein said first surface material forming said substantially planar first surface of the spacers has a thermal conductivity of at least 3 W/m·K, and wherein said second surface material forming said substantially planar second surface of the spacers has a thermal conductivity of at least 3 W/m·K.
45. The method of claim 41, wherein said first surface material forming said substantially planar first surface of the spacers has a thermal conductivity of at least 5 W/m·K, and wherein said second surface material forming said substantially planar second surface of the spacers has a thermal conductivity of at least 5 W/m·K.
46. The method of claim 41, wherein said first surface material forming said substantially planar first surface of the spacers has a thermal conductivity of at least 10 W/m·K, and wherein said second surface material forming said substantially planar second surface of the spacers has a thermal conductivity of at least 10 W/m·K.
47. The method of claim 41, wherein said step of preparing a pallet assembly comprises the step of preparing a plurality of pallet assemblies.
48. The method of claim 47, further comprising the steps of:
- positioning each of said plurality of pallet assemblies on one of a plurality of racks in a storage warehouse space, each of the plurality of racks positioned adjacent to an aisle, whereby a forklift can access each of the plurality of pallet assemblies.
49. The method of claim 47, wherein said step of directing a thermally conditioned airflow through the at least one airflow channel of the spacers to adjust the temperature of the product contained in the plurality of cases positioned on either side of the plurality of spacers to the desired temperature comprises the steps of:
- positioning each of the plurality of pallet assemblies in fluid communication with an air intake opening defined by one of a plurality of racks occupying a storage warehouse space;
- actuating at least one fan in fluid communication with a airflow chamber, the airflow chamber in fluid communication with the air intake opening, whereby the step of actuating the fan creates a circulation of ambient air flowing through the at least one airflow channel of each of the at least one spacer and thereafter to the air intake opening, and the airflow chamber and back to the warehouse space.
50. The method of claim 41, wherein said spacer outer perimeter defines a rectangle measuring about 40 inches by about 48 inches.
51. The method of claim 41, wherein said spacer outer perimeter defines a rectangle measuring about 42 inches by about 48 inches.
52. The method of claim 41, wherein said spacer outer perimeter defines a rectangle measuring about 41 inches by about 48 inches.
53. The method of claim 41, wherein said spacer defines a load capacity for the quantity of product of about 1800 pounds.
54. The method of claim 41, wherein said spacer defines a load capacity for the quantity of product of about 3600 pounds.
55. The method of claim 41, wherein said first surface includes a plurality of perforations, said perforations are arranged such that at least one area of continuous surface free of said perforations and sized to receive a suction gripping device is provided on said first surface, wherein said at least one area of continuous surface free of said perforations and sized to receive a suction gripping device comprises an area of 4 sq. in.
56. The method of claim 41, wherein said first surface and said second surface are both formed of a polymer.
57. The method of claim 41, wherein said first surface and said second surface are both formed of an aluminum material.
58. The method of claim 41, wherein said first surface comprises a first surface of a first 14 gauge aluminum plate and said second surface comprises a first surface of a second 14 gauge aluminum plate.
59. The method of claim 41, wherein said first surface and said second surface are both formed of a 304 stainless steel material.
60. The method of claim 41, wherein said first surface and said second surface are both formed of a mild steel.
61. The method of claim 41, wherein said supports are spaced from each by other by about 4-6 inches measured along the y-axis of the Cartesian coordinate system, and wherein said supports extend along a trajectory defined by the z-axis at a height of about 0.25 to 3 in.
62. The method of claim 41, wherein said spacer further comprises a lip extending from said spacer outer perimeter.
Type: Application
Filed: Mar 15, 2013
Publication Date: Sep 18, 2014
Applicant: TIPPMANN ENGINEERING (Fort Wayne, IN)
Inventor: Tippmann Engineering
Application Number: 13/844,078
International Classification: F24F 7/007 (20060101);