US4575000A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Food wrapper package
Assignee: International Paper Co
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Filing: 1984-11-09
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Granted: 1986-03-11
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Expires: 2004-11-09
Abstract
Abstract A wrapper for a food product such as a hamburger which is defined by an outer layer of paperboard and an inner layer of glassine type of paper. The outer and inner layers are of generally rectangular form, the glassine type of paper extending beyond the side edges of the paperboard and having top and bottom edges, a major portion of each edge having radiused cutouts. The paperboard and glassine type of paper are joined by a narrow adhesive strip running lengthwise and centrally of them. The ends of the paperboard have hinged and relatively narrow locking panels. In use, a food product such as a hamburger is placed on top of the glassine type of paper at its midlength. The wrapper is folded around the hamburger to form a tube, the wrapper ends being secured together by twisting the locking panels, with the glassine type of paper extending from both ends of the tube being bunched together and tucked in beneath the hamburger, between it and the paperboard.
Inventors
- 👤 Robert L. Gordon
- 👤 Michael G. Bodary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:48
CPC Classifications
B; B65; B65D; B65D75/00; B65D75/28; Y; Y10; Y10S; Y10S229/00; Y10S229/938
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
269 words
A wrapper for forming a food package, the package defined by a food article, such as a hamburger, wrapped by a wrapper, the wrapper including a generally rectangular blank formed of foldable, stiff and resilient sheet stock, such as paperboard, the blank having a central panel adapted to form the bottom of the package, a pair of first lateral panels each hinged at one respective end of the central panel and adapted to form the sides of the package, a second pair of lateral panels each hinged to a respective end of a first lateral panel, the second lateral panels adapted to form the top of the package, means for joining the free ends of the second lateral panels, a flexible sheet, such as paper, secured to one surface of at least the central panel of said blank, said flexible sheet being of substantially the same length as said blank, the flexible sheet extending beyond the side edges of said blank, the flexible sheet being secured to said central panel along a zone narrower than the width of the central panel, whereby when the blank and flexible sheet are wrapped around a food product to thereby form a tube, and the rectangular blank is on the outside and the flexible sheet is on the inside of the tube and contacting the food product, the edges of the flexibe sheet can be folded to close the ends of the tube, thus covering the exposed portions of the food product and permitting the flexible sheet edges to be folded beneath the food product, between the food product and the central panel.
Claim 2
Dependent Claim
269 words
A wrapper for forming a food package, the package defined by a food article, such as a hamburger, wrapped by a wrapper, the wrapper including a generally rectangular blank formed of foldable, stiff and resilient sheet stock, such as paperboard, the blank having a central panel adapted to form the bottom of the package, a pair of first lateral panels each hinged at one respective end of the central panel and adapted to form the sides of the package, a second pair of lateral panels each hinged to a respective end of a first lateral panel, the second lateral panels adapted to form the top of the package, means for joining the free ends of the second lateral panels, a flexible sheet, such as paper, secured to one surface of at least the central panel of said blank, said flexible sheet being of substantially the same length as said blank, the flexible sheet extending beyond the side edges of said blank, the flexible sheet being secured to said central panel along a zone narrower than the width of the central panel, whereby when the blank and flexible sheet are wrapped around a food product to thereby form a tube, and the rectangular blank is on the outside and the flexible sheet is on the inside of the tube and contacting the food product, the edges of the flexibe sheet can be folded to close the ends of the tube, thus covering the exposed portions of the food product and permitting the flexible sheet edges to be folded beneath the food product, between the food product and the central panel.
Claim 3
Dependent Claim
80 words
The wrapper of claim 1 wherein the means for joining the free ends of the second lateral panels is defined by a pair of hinged locking panels at each free end of a lateral panel, the locking panels adapted to be placed on abutting, face to face relationship, the locking panels adapted to be twisted in a spiral manner until they are in substantial parallelism with the top of the package when the wrapper is placed around a food product.
Claim 4
Dependent Claim
22 words
The wrapper of claim 1 wherein the flexible sheet is secured to the blank substantially along the entire length of the blank.
Claim 5
Dependent Claim
26 words
The wrapper of claim 3 wherein the zone of attachment of the flexible wrapper to the blank is located substantially at the mid-width of the blank.
Claim 6
Dependent Claim
18 words
The wrapper of claim 1 wherein the flexible sheet is narrower along its mid-length than at its ends.
Claim 7
Dependent Claim
25 words
The wrapper of claim 1 wherein the flexible paper sheet is provided with a cutout along a major portion of its top and bottom edges.
Claim 8
Dependent Claim
191 words
A food package defined by a food product and a wrapper, the wrapper being in the form of a tube having bottom, side and top walls, the wrapper defined by a two layered laminate, one layer being an external layer and the other layer being an internal layer, the top wall defined by joined ends of the laminate, the exterior and interior layers being circumferentially coextensive, the external layer being formed of a single piece of foldable, stiff and resilient sheet stock, such as paperboard, the inner layer being a flexible sheet, such as glassine type of paper, the flexible sheet extending beyond both edges of the sheet stock with the extending flexible sheet portions being tucked in between an exterior surface portion of the food product and an interior wall of the sheet stock, the two layers of the laminate being adhered together over a zone narrower than the width of the sheet stock at least at said interior wall of the sheet stock, to thereby define spaces between the food product exterior surface and said interior wall of the sheet stock, the spaces receiving the tucked-in flexible sheet portions.
Claim 9
Dependent Claim
191 words
A food package defined by a food product and a wrapper, the wrapper being in the form of a tube having bottom, side and top walls, the wrapper defined by a two layered laminate, one layer being an external layer and the other layer being an internal layer, the top wall defined by joined ends of the laminate, the exterior and interior layers being circumferentially coextensive, the external layer being formed of a single piece of foldable, stiff and resilient sheet stock, such as paperboard, the inner layer being a flexible sheet, such as glassine type of paper, the flexible sheet extending beyond both edges of the sheet stock with the extending flexible sheet portions being tucked in between an exterior surface portion of the food product and an interior wall of the sheet stock, the two layers of the laminate being adhered together over a zone narrower than the width of the sheet stock at least at said interior wall of the sheet stock, to thereby define spaces between the food product exterior surface and said interior wall of the sheet stock, the spaces receiving the tucked-in flexible sheet portions.
Claim 10
Dependent Claim
26 words
The food package of claim 7 wherein the glassine type paper is provided with a cutout along a major portion of its top and bottom edges.
Claim 11
Dependent Claim
21 words
The food package of claim 7 wherein said interior wall of the sheet stock is the bottom wall of the tube.
Claim 12
Dependent Claim
20 words
The food package of claim 7 wherein said narrower zone extends around the entire inner circumference of the sheet stock.
Claim 13
Dependent Claim
89 words
The food package of claim 7 wherein the means for joining the two circumferential ends of the laminate together is defined by pair of foldable locking panels at each external layer end, the locking panels and the flexible sheet portions carried thereby being in face to face relationship and being spirally twisted about their fold axes to assume a position substantially parallel to the top wall, whereby the tension from the tucked-in flexible sheet portions maintains the locking panels in this position to thereby keep the food package closed.
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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) | 1989-03-10 | 1989-09-09 | 1990-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-10 | 1993-09-09 | 1994-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-10 | 1997-09-09 | 1998-03-11 | $7700.00 | Window Closed / Lapsed |