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Publication numberUS3871572 A
Publication typeGrant
Publication dateMar 18, 1975
Filing dateJan 21, 1974
Priority dateJan 21, 1974
Publication numberUS 3871572 A, US 3871572A, US-A-3871572, US3871572 A, US3871572A
InventorsSkaggs Boyd T
Original AssigneeContainer Corp
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Angle lock end folder
US 3871572 A
Abstract
A mailing folder for a heavy object such as a book of great thickness is formed from a cut and scored blank of paper board folded into position to provide a pair of opposite protective cells for ends of the book. The folder comprises a plurality of rectangularly shaped panels connected to define a tube, and cell forming elements extend from opposite ends of a main panel thereof and are foldably connected to each other and to the main panel to enclose opposite ends of the book. Each of the cell forming elements comprises first and second spaced outer flap elements foldable to an inclined upright position with an inner flap element foldably connected to the first and second flap elements at a distal flap edge thereof and foldable to a vertical position with the distal edge bearing against the main panel. A central reinforcing element extends between the first and second outer flap elements and is foldably connected at its ends to the main panel and the inner flap element, the central element having first and second portions additionally defined by spaced edges in the first and second outer flap elements and in the main panel, the central reinforcing element being folded upon folding of the first and second outer flap elements to a position where a portion thereof is braced against the first and second spaced flap elements. Closure elements extend from a top panel of the tube and are foldable to a position over the protective cell forming elements to provide a pair of oppositve protective cells for the book contained within the folder.
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United States Patent Skaggs [451 Mar. 18, 1975 ANGLE LOCK END FOLDER [75] Inventor: Boyd T. Skaggs, Ravenna, Ohio [73] Assignee: Container Corporation of America,

Chicago, Ill.

22 Filed: Jan.2l, 1974 211 Appl.No.:434,883

Primary ExaminerEdward J. McCarthy Attorney, Agent, or FirmCarpenter, Ostis & Lindberg [57] ABSTRACT Amailing folder for a heavy object such as a book of great thickness is formed from a cut and scored blank of paper board folded into position to provide a pair of opposite protective cells for ends of the book. The folder comprises a plurality of rectangularly shaped panels connected to define a tube, and cell forming elements extend from opposite ends of a main panel thereof and are foldably connected to each other and to-the main panel to enclose opposite ends of the book. Each of the cell forming elements comprises first and second spaced outer flap elements foldable to an inclined upright position with an inner flap element foldably connected to the first and second flap elements at a distal flap edge thereof and foldable to a vertical position with the distal edge bearing against the main panel. A central reinforcing element extends between the first and second outer flap elements and is foldably connected at its ends to the main panel and the inner flap element, the central element having first and second portions additionally defined by spaced edges in the first and second outer flap elements and in the main panel, the central reinforcing element being folded upon folding of the first and second outer flap elements to a position where a portion thereof is braced against the first and second spaced flap elements. Closure elements extend from a top panel of the tube and are foldable to a position over the protective cell forming elements to provide a pair of oppositve protective cells for the book contained within the folder.

1 Claim, 5 Drawing Figures PATENTEBHAR I 81975 FIGJ FIGZ

ANGLE LOCK END FOLDER BACKGROUND OF THE INVENTION Class 229-40 Ringholz Class 229-40 Partain et al The structure according to the present invention constitutes an improvement over the aforesaid prior arts patents in that a book of relatively great thickness can be more efficiently and properly protected because of the particular configuration of protective cells provide for opposite ends of the book. The cells are characterized by spaced angularly positioned elements causing a vertical element to bear against an edge of the book, the angularlypositioned elements being maintained in position by a central element which is contacted by closure elements for the protective cell forming elements to provide a cell of the opposite protective cells.

THE DRAWINGS FIG. 1 is a perspective view showing details of an improved mailing folder constructed according to the teachings of thepresent invention, certain parts being broken away;

FIG. 2 is a plan view of a cut and scored blank of paper board or the like for constructing the folder seen in FIG. 1;

FIG. 3 is a plan view looking downward and taken along a plane beneath the top cover panel of the folder;

FIG. 4 is a vertical sectional view taken substantially along the line 4--4 of FIG. 3 looking in the direction of the arrows; and

FIG. 5 is a view looking in the direction of the arrows 55 of FIG. 4, certain parts are being broken away to show details of construction.

The improved mailing folder according to the present invention is denoted generally by the reference numeral and is formed from a cut and scored blank 10A seen in FIG. 2. As seen in FIG. 2, blank 10A comprises rectangularly shaped main, first side, top and opposite side panels denoted respectively by the reference numerals ll, 12, 13 and 14, these panels being foldably connected together along fold lines 16 and forming a tube. Closure flap 17 is foldably connected to opposite side panel 14 along a fold line 18, and is connected to the main panel 11, there being a lift tab 19 foldably connected to closure flap 17 along a score line 21.

Protective cell forming elements are referred to generally by reference numeral 20, and extended from opposite ends of the main panel 11, and are foldably connected to each other and to the main panel 11 and fold able to positions to enclose opposite ends of a book, not shown. Protective cell forming elements 20 comprise respective spaced first and second flanking flap elements 22 and 23 foldably connected to the main panel 11 along a fold line 24. An inner flap element 26 is foldably connected to the first and second flanking flap elements 22 and 23 at a distal edge 27 thereof, and is foldable to a vertical position with the distal edge of inner flap element 26 bearing against main panel 11. In the folding of the inner flap element 26 to the vertical position the first and second flap elements 22 and 23 adopt an inclined upright position as seen more clearly in FIGS. 1 and 4.

A central reinforcing element indicated generally by reference numeral 25 extends between the first and second flap elements 22 and 23 and is foldably connected at its inner end along a score line 28 to the main panel 11 and to the inner flap element 26 along score line 27. Central reinforcing element 25 comprises first and second portions referred to respectively by reference numerals 29 and 31, these portions being foldably connected alonga fold line 33. Central reinforcing element 25 is additionally defined by partly converging spaced edges 36 in the first and second outer flap ele ments 22 and 23, and by spaced edges 37. In the forming of the central reinforcing element 25, portions of the outer flap elements 22 and 23 cut out as seen particularly in FIG. 2, and provide shoulders 25A and 25B. Shoulder 25A is formed in central element 25, and shoulder 25B is formed in flap elements 22 and 23. In the folding of the protective cell forming element 20 central reinforcing element 25 is caused to bear against the first and second spaced outer flap elements 22 and 23 as seen particularly in FIGS. 1 and 4.

In the folding of the central reinforcing element 25, element 29 thereof adopts an horizontal position as seen in FIGS. 1 and 4. Top panel 13 is provided with closure elements 41 foldably connected to the top panel 13 along a fold line 42, and a closure element 43 foldably connected to closure element 41 along a fold line 44. When the closure elements 41 and 43 and brought into the closing position flap 41 bears against the fold line 33 between reinforcing element 25 and portion 29.

When the folding and erection operation is completed the shoulders 25A on central element 25 are in abutting relationship with the underside of flanking elements 22 and 23, element 25 adopting the inclined position shown and providing an effective cell brace with elements 22 and 23.

I claim:

1. A mailing folder for a heavy object such as a book of great thickness, said folder being formed from a cut and scored blank of paper board or the like and folded into position so as to provide opposed and braced end protective cells for opposite ends of said book, said folder comprising:

a. rectangularly shaped main, first side, top and opposite side panel connected along fold lines and folded to define a tube;

b. protective cell forming elements extending from opposed ends of said main panel foldably connected to each other and to said main panel and foldable to position to enclose opposite ends of said book, said elements each comprising:

i. first and second spaced flanking flap elements foldably connected to said main panel and foldable to an inclined upright position;

ii. an inner flap element foldably connected to said flanking flap and foldable to a vertical position with the distal edge thereof bearing against said main panel;

v. said central reinforcing element being folded upon folding of said first and second flanking flap elements to an inclined position.

c. closure elements extending from said top panel and foldable to a position over said protective cell forming elements to provide a pair of opposed protective cells.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US3399821 *Jul 25, 1967Sep 3, 1968West Virginia Pulp & Paper CoBook wrapper
US3666168 *Jun 29, 1970May 30, 1972Stone Container CorpPaperboard cushioning cell construction
US3722668 *Feb 22, 1972Mar 27, 1973Container CorpCushioned shipping folder
US3792811 *Mar 20, 1972Feb 19, 1974Container CorpCushioned shipping folder
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3985230 *Jul 24, 1975Oct 12, 1976Stone Container CorporationCarton
US4134497 *Aug 10, 1977Jan 16, 1979Fidelity Container Corp.Shock absorbing carton insert
US4300679 *Aug 27, 1980Nov 17, 1981Container Corporation Of AmericaSelf locking folder
US4574998 *Aug 1, 1984Mar 11, 1986Kohler Co.Open-ended carton and carton blank
US5088601 *Aug 5, 1991Feb 18, 1992At&T Bell LaboratoriesCircuit board shipping carton
US5096060 *Dec 20, 1990Mar 17, 1992Vavra Paul PPackaging system for a basin, lavatory or sink
US5183155 *Dec 20, 1990Feb 2, 1993Vavra Paul PPackaging system for a toilet water tank and cover
US6622860 *Jul 25, 2001Sep 23, 2003Dell Products LpUniversal pack apparatus and method
USRE30163 *Apr 20, 1978Dec 11, 1979Stone Container CorporationCarton
Classifications
U.S. Classification206/424
International ClassificationB65D5/02
Cooperative ClassificationB65D5/0245
European ClassificationB65D5/02E
Legal Events
DateCodeEventDescription
Nov 25, 1992ASAssignment
Owner name: BANKERS TRUST COMPANY, NEW YORK
Free format text: AMENDMENT TO SECURITY AGREEMENT;ASSIGNOR:CONTAINER CORPORATION OF AMERICA;REEL/FRAME:006401/0025
Effective date: 19920826
Nov 26, 1986ASAssignment
Owner name: BANK OF NOVA SCOTIA, THE
Owner name: BANKERS TRUST COMPANY, 280 PARK AVENUE, NEW YORK,
Owner name: CHEMICAL BANK
Owner name: MANUFACTURERS HANOVER TRUST COMPANY
Owner name: NATIONAL WESTMINSTER BANK PLC
Free format text: SECURITY INTEREST;ASSIGNOR:CONTAINER CORPORATION OF AMERICA;REEL/FRAME:004858/0656
Effective date: 19860930