US4228744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pallet formed from two spaced, interlocking sheets of corrugated paperboard and rigid sleeves
Assignee: Stone Container Corp
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Filing: 1979-05-24
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Granted: 1980-10-21
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Expires: 1999-05-24
Abstract
Abstract Disclosed is a pallet constructed of paperboard material which is preferably water resistant. Two sheets of corrugated paperboard which are cut to define interlocking tabs are spaced in parallel relationship by a plurality of cylindrical sleeves, or rectangular corrguated tubes. The tabs are bent perpendicular to the sheets. Slots in tabs in one sheet interlock with slots in opposed tabs in the other sheet. The cylindrical sleeves or rectangular tubes surround the tabs to thereby provide lateral stability as well as vertical strength. Preferably, the corrugated paperboard sheets are impregnated with a waterproofing material such as wax, and the cylindrical sleeves are constructed of spirally-wound paperboard, or, alternatively are in the form of corrugated tubes.
Inventors
- 👤 Robert L. Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:57
CPC Classifications
B; B65; B65D; B65D19/00; B65D19/0004; B65D19/0006; B65D19/0008; B65D19/001; B65D19/0012; B65D2519/00; B65D2519/00004; B65D2519/00009; B65D2519/00014; B65D2519/00019; B65D2519/00049; B65D2519/00054; B65D2519/00084; B65D2519/00089; B65D2519/00258; B65D2519/00263; B65D2519/00273; B65D2519/00283; B65D2519/00288; B65D2519/00313; B65D2519/00318; B65D2519/00328; B65D2519/00343; B65D2519/00368; B65D2519/00373; B65D2519/00547; B65D2519/00552; B65D2519/00557; B65D2519/00567; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24174; Y10T428/24273; Y10T428/24281; Y10T428/24289
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
226 words
A pallet comprising: (a) a first sheet of corrugated paperboard which is cut to define a first set of tabs hinged to said first sheet about fold lines, each tab having a slot which extends from a cut end toward the fold line; (b) a second sheet of corrugated paperboard placed in parallel, spaced relation to said first sheet, said second sheet being cut to define a second set of tabs hinged to said second sheet along fold lines perpendicular to the fold lines in said first sheet, each tab in said second set having a slot which extends from a cut end toward the fold line, wherein the slots in the tabs in said first set are aligned and engaged with the slots in opposed tabs in said second set; and (c) a plurality of rigid sleeves, positioned between said first and second sheets and surrounding engaged pairs of opposed tabs, with the opposed ends of said sleeves functioning as load bearing surfaces, and wherein the width of each said first and second set of tabs adjacent its respective fold line is less than the width of the tab adjacent the cut ends thereof, such that more than one half of each said load bearing ends of said rigid sleeve is disposed contiguous with a sheet whereby the bearing capacity of said pallet is increased.
Claim 2
Dependent Claim
226 words
A pallet comprising: (a) a first sheet of corrugated paperboard which is cut to define a first set of tabs hinged to said first sheet about fold lines, each tab having a slot which extends from a cut end toward the fold line; (b) a second sheet of corrugated paperboard placed in parallel, spaced relation to said first sheet, said second sheet being cut to define a second set of tabs hinged to said second sheet along fold lines perpendicular to the fold lines in said first sheet, each tab in said second set having a slot which extends from a cut end toward the fold line, wherein the slots in the tabs in said first set are aligned and engaged with the slots in opposed tabs in said second set; and (c) a plurality of rigid sleeves, positioned between said first and second sheets and surrounding engaged pairs of opposed tabs, with the opposed ends of said sleeves functioning as load bearing surfaces, and wherein the width of each said first and second set of tabs adjacent its respective fold line is less than the width of the tab adjacent the cut ends thereof, such that more than one half of each said load bearing ends of said rigid sleeve is disposed contiguous with a sheet whereby the bearing capacity of said pallet is increased.
Claim 3
Dependent Claim
22 words
A pallet according to claim 1 wherein the first and second sheets have a waterproofing material on at least the surfaces thereof.
Claim 4
Dependent Claim
21 words
A pallet according to claim 2 wherein said waterproofing material comprises a wax which totally impregnates said first and second sheets.
Claim 5
Dependent Claim
27 words
A pallet according to claim 1 wherein the first and second sheets have means about their outer edges for enabling the outermost edges to bend under pressure.
Claim 6
Dependent Claim
28 words
A pallet according to claim 1 wherein each of said slots extends from about one-fourth to about one-half the distance from the cut end toward the fold line.
Claim 7
Dependent Claim
19 words
A pallet according to claim 1 wherein said sleeves are cylindrical and have diameters approximately equal to their height.
Claim 8
Dependent Claim
25 words
A pallet according to claim 1 wherein the inside diameter of said sleeves approximately equals the width of said tabs adjacent the cut ends thereof.
Claim 9
Dependent Claim
17 words
A pallet according to claim 1 wherein the direction of the corrugations in both sheets is parallel.
Claim 10
Dependent Claim
13 words
A pallet according to claim 1 including nine engaged pairs of opposed tabs.
Claim 11
Dependent Claim
27 words
A pallet according to claim 9 wherein the first and second sheets have rectangular flat surfaces of equal size, each having a length greater than the width.
Claim 12
Dependent Claim
39 words
A pallet according to claim 10 wherein said fold lines in said first sheet are aligned parallel to the lengthwise sides of the sheet, and said fold lines in said second sheet are aligned parallel to the widthwise sides.
Claim 13
Dependent Claim
48 words
A pallet according to claim 11 wherein tabs adjacent to the lengthwise sides of said first sheet are cut to bend outwardly about their respective fold lines, and the tabs adjacent the widthwise side in said second sheet are cut to bend outwardly about their respective fold lines.
Claim 14
Dependent Claim
49 words
A pallet according to either of claims 1 or 12 wherein said first and second sheets are made of two-ply corrugated board and the direction of corrugations in both plies in said first sheet is perpendicular to the direction of the corrugations in both plies of said second sheet.
Claim 15
Dependent Claim
24 words
A pallet according to claim 13 wherein the direction of corrugations in both plies of each sheet is perpendicular to said fold lines therein.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-10-21 | 1984-04-21 | 1984-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-21 | 1988-04-21 | 1988-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-21 | 1992-04-21 | 1992-10-21 | $7700.00 | Window Closed / Lapsed |