US3861580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Book folder
Assignee: Stone Container Corp
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Filing: 1973-10-24
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Granted: 1975-01-21
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Expires: 1993-10-24
Abstract
Abstract An improved shipping container for a book or other generally rectangular object includes a tubular body having an end closure at each end, and an end cushioning structure inwardly of each end closure. The end cushioning structure protects opposite ends of the book from damage during shipment. The folder is made of one piece of corrugated paperboard and is readily formed about the book or like object on book folding equipment of a type well known in the art.
Inventors
- 👤 William G Sieffert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:10
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/02; B65D5/0245
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
421 words
A blank for forming a book folder including a first main panel, a first side panel, a second main panel, a second side panel, and a side glue flap connected in series along parallel fold lines, an end panel secured to each end of said second main panel along end fold lines which are at right angles to said parallel fold lines, end glue flaps secured to said end panels along fold lines extending at right angles to said parallel fold lines, said first and second main panels and said first and second side panels being adapted to form a tubular body with said side glue flap adapted to be secured to said first main panel to hold said tubular body in tubular relation, said end panels being adapted to close the ends of said tubular body, and said end glue flaps being adapted to be secured to said first main panel and a cushioning structure connected to each end of said first main panel and defined by extensions of the side edges of said first main panel, each cushioning structure including: a rectangular cushioning panel defined by parallel first and second cushioning panel fold lines spaced apart a distance greater than the width of said side panels, and connecting fold lines parallel to said parallel fold lines and equally spaced from said first main panel edge extensions, first isosceles triangular areas having their base sides extending along said first main panel extensions and their equal length sides converging from said base to apexes at an end of said first cushioning panel fold line, second isosceles area having their bases extending along said connecting fold lines and having their equal lengths sides converging from the ends of said connecting fold lines to apexes at said extensions of said edges of said first main panel, said second cushioning panel fold line having extensions extending to the extending edges of said first main panel and defining right triangular areas having their bases extending along said edge extensions of said first main panel and their hypotenuse sides hingedly connected to an equal length side of said second isosceles triangular area, rectangular bearing flaps hinged to said cushioning panel along said second cushioning panel fold lines and adapted to fold into edge abutting relation to said first main panel and rectangular reinforcing flaps hinged to the sides of said bearing flap and to the right triangular edges of said right triangular areas and adapted to fold into edge abutting relation to said first main panel.
Claim 2
Dependent Claim
421 words
A blank for forming a book folder including a first main panel, a first side panel, a second main panel, a second side panel, and a side glue flap connected in series along parallel fold lines, an end panel secured to each end of said second main panel along end fold lines which are at right angles to said parallel fold lines, end glue flaps secured to said end panels along fold lines extending at right angles to said parallel fold lines, said first and second main panels and said first and second side panels being adapted to form a tubular body with said side glue flap adapted to be secured to said first main panel to hold said tubular body in tubular relation, said end panels being adapted to close the ends of said tubular body, and said end glue flaps being adapted to be secured to said first main panel and a cushioning structure connected to each end of said first main panel and defined by extensions of the side edges of said first main panel, each cushioning structure including: a rectangular cushioning panel defined by parallel first and second cushioning panel fold lines spaced apart a distance greater than the width of said side panels, and connecting fold lines parallel to said parallel fold lines and equally spaced from said first main panel edge extensions, first isosceles triangular areas having their base sides extending along said first main panel extensions and their equal length sides converging from said base to apexes at an end of said first cushioning panel fold line, second isosceles area having their bases extending along said connecting fold lines and having their equal lengths sides converging from the ends of said connecting fold lines to apexes at said extensions of said edges of said first main panel, said second cushioning panel fold line having extensions extending to the extending edges of said first main panel and defining right triangular areas having their bases extending along said edge extensions of said first main panel and their hypotenuse sides hingedly connected to an equal length side of said second isosceles triangular area, rectangular bearing flaps hinged to said cushioning panel along said second cushioning panel fold lines and adapted to fold into edge abutting relation to said first main panel and rectangular reinforcing flaps hinged to the sides of said bearing flap and to the right triangular edges of said right triangular areas and adapted to fold into edge abutting relation to said first main panel.
Claim 3
Dependent Claim
24 words
The structure of claim 1 and in which said reinforcing flaps are adapted to fold into right angular relation to said second main panel.
Claim 4
Dependent Claim
333 words
A cushioned end book folder containing a book and the like the folder including: a pair of parallel main panels and a pair of parallel side panels secured in tubular relation, one of said main panels being rectangular and having end panels connected to the ends thereof, and glue flaps connected to said end panels and secured to the other main panel to close the folder, a cushioning structure inwardly of each of said end panels, each cushioning structure including: a rectangular cushioning panel hinged to an end of the central portion of the other main panel and folded inwardly at an acute angle to the other main panel, a rectangular bearing flap connected to said cushioning panel and having its edge engaging the inner surface of said other main panel to form a hollow right triangular cushioning area between said other main panel, said cushioning panel, and said bearing flap, hollow triangular structures between the sides of said cushioning panels and said side panels, each hollow triangular structure including: a first isosceles triangular area having its base extending along an extension of an edge of said other main panel and its apex at a corner of said rectangular cushioning panel, said first isosceles triangular area being at an obtuse angle to said other main panel, a second isosceles triangular area connected to the first isosceles triangular area and having its base hingedly forming an edge of said rectangular cushioning panel, said second isosceles triangular area being at an acute angle to said other main panel, a right triangular area having its hypotenuse side connected to an equal length side of said second isosceles triangular area said right triangular area being in face contact with the inner surface of said one main panel, and a rectangular reinforcing flap hinged to said bearing flap and to the right triangular edge of said triangular area and extending in right angular relation to said other main panel having an edge thereof engaging said other main panel.
Claim 5
Dependent Claim
333 words
A cushioned end book folder containing a book and the like the folder including: a pair of parallel main panels and a pair of parallel side panels secured in tubular relation, one of said main panels being rectangular and having end panels connected to the ends thereof, and glue flaps connected to said end panels and secured to the other main panel to close the folder, a cushioning structure inwardly of each of said end panels, each cushioning structure including: a rectangular cushioning panel hinged to an end of the central portion of the other main panel and folded inwardly at an acute angle to the other main panel, a rectangular bearing flap connected to said cushioning panel and having its edge engaging the inner surface of said other main panel to form a hollow right triangular cushioning area between said other main panel, said cushioning panel, and said bearing flap, hollow triangular structures between the sides of said cushioning panels and said side panels, each hollow triangular structure including: a first isosceles triangular area having its base extending along an extension of an edge of said other main panel and its apex at a corner of said rectangular cushioning panel, said first isosceles triangular area being at an obtuse angle to said other main panel, a second isosceles triangular area connected to the first isosceles triangular area and having its base hingedly forming an edge of said rectangular cushioning panel, said second isosceles triangular area being at an acute angle to said other main panel, a right triangular area having its hypotenuse side connected to an equal length side of said second isosceles triangular area said right triangular area being in face contact with the inner surface of said one main panel, and a rectangular reinforcing flap hinged to said bearing flap and to the right triangular edge of said triangular area and extending in right angular relation to said other main panel having an edge thereof engaging said other main panel.
Claim 6
Dependent Claim
22 words
The structure of claim 3 and in which the bases of said first isosceles triangular areas are disconnected from said side panels.
Claim 7
Dependent Claim
25 words
The structure of claim 3 and in which said bearing flap connected to each cushioning panel is engageable with the book contained in said folder.
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) | 1978-01-20 | 1978-07-22 | 1979-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-20 | 1982-07-22 | 1983-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-20 | 1986-07-22 | 1987-01-21 | $7700.00 | Window Closed / Lapsed |