Patent US3552640A successfully refreshed from Google Patents.
US3552640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expansible gusset envelope with side flap seams
Assignee: AFV INTERIM Inc A CORP OF DE
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Filing: 1969-04-14
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Granted: 1971-01-05
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Expires: 1989-04-14
Abstract
Abstract An expansible gusset envelope having a full front panel and a back panel with side seams all formed from a single paperboard blank. The method of fabrication can either be by hand or machine formed in a continuous operation in which all side and bottom gusset panels are interiorly folded and flattened between the front and back panel at the completion of the operations. In its completed form, the envelope is easily expanded into boxlike configuration by pressing the side and bottom gusset panels outwardly.
Inventors
- 👤 Frank L Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:30
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/0005; B65D27/00; Y; Y10; Y10S; Y10S229/00; Y10S229/928
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
499 words
An expansible envelope comprising: a one piece blank including a substantially rectangular front panel, a back panel hingedly depending from the lower edge of said front panel by inboard and outboard bottom gusset sections defined by longitudinally extending triple score lines, an inboard side gusset panel hinged to each or the lateral edges of said front panel along corresponding inboard laterally extending score lines, a tab coextensive with and hinged to the lower edge of each of the inboard side gusset panels along extensions of the inboard longitudinal score line and being further hinged to the lateral edges of said inboard bottom gusset section along extensions of the inboard lateral score lines, an outboard side gusset panel to the lateral edge of each of said inboard side gusset panels along a corresponding intermediate lateral score line, an extension flap substantially coextensive with and hinged to the lower edge of each of said outboard side gusset panels along extensions of said inboard longitudinally extending score line and being being further hinged to the lateral edge of each of said tabs along extensions of said intermediate lateral score lines, a side flap panel section hinged to the lateral edges of each of said outboard side gusset panels along a corresponding outboard laterally extending score line, and a rectangular tailpiece hinged to the lower edge of each of said side flap panel sections along extensions of the inboard longitudinally extending score line and being further hinged to the lateral edge of each of said extension flaps along extensions of said outboard laterally extending score lines, said back panel being narrower in width than said front panel by a dimension at each side substantially equal to the width of a side gusset panel and having a square notch at each side adjacent the outboard longitudinal score line equal to the width of a side gusset panel, said inboard bottom gusset section, said tabs, said extension flaps and said tailpieces being inwardly folded along the corresponding inboard longitudinally extending score line, said outboard bottom gusset section being outwardly folded along the intermediate longitudinally extending score line, and said back panel being folded into overlying disposition with said front panel along said outboard longitudinally extending score line, said inboard side gusset panels and said tabs being inwardly folded along the corresponding inboard laterally extending score line, said outboard side gusset panels and said extension flaps being outwardly folded along the corresponding intermediate laterally extending score lines, and said side flap panel sections and said tailpieces being inwardly folded along the corresponding outboard laterally extending score line, said side flap panel sections being adhesively sealed to the lateral margins of said back panel, said tabs being adhesively sealed to the underlying area of the outer margins of said inboard bottom gusset sections, portions of said tailpieces being adhesively sealed to the underlying extension flaps, and portions of the tailpieces being adhesively sealed to the underlying portion of the outboard bottom gusset sections exposed by said notches.
Claim 2
Dependent Claim
499 words
An expansible envelope comprising: a one piece blank including a substantially rectangular front panel, a back panel hingedly depending from the lower edge of said front panel by inboard and outboard bottom gusset sections defined by longitudinally extending triple score lines, an inboard side gusset panel hinged to each or the lateral edges of said front panel along corresponding inboard laterally extending score lines, a tab coextensive with and hinged to the lower edge of each of the inboard side gusset panels along extensions of the inboard longitudinal score line and being further hinged to the lateral edges of said inboard bottom gusset section along extensions of the inboard lateral score lines, an outboard side gusset panel to the lateral edge of each of said inboard side gusset panels along a corresponding intermediate lateral score line, an extension flap substantially coextensive with and hinged to the lower edge of each of said outboard side gusset panels along extensions of said inboard longitudinally extending score line and being being further hinged to the lateral edge of each of said tabs along extensions of said intermediate lateral score lines, a side flap panel section hinged to the lateral edges of each of said outboard side gusset panels along a corresponding outboard laterally extending score line, and a rectangular tailpiece hinged to the lower edge of each of said side flap panel sections along extensions of the inboard longitudinally extending score line and being further hinged to the lateral edge of each of said extension flaps along extensions of said outboard laterally extending score lines, said back panel being narrower in width than said front panel by a dimension at each side substantially equal to the width of a side gusset panel and having a square notch at each side adjacent the outboard longitudinal score line equal to the width of a side gusset panel, said inboard bottom gusset section, said tabs, said extension flaps and said tailpieces being inwardly folded along the corresponding inboard longitudinally extending score line, said outboard bottom gusset section being outwardly folded along the intermediate longitudinally extending score line, and said back panel being folded into overlying disposition with said front panel along said outboard longitudinally extending score line, said inboard side gusset panels and said tabs being inwardly folded along the corresponding inboard laterally extending score line, said outboard side gusset panels and said extension flaps being outwardly folded along the corresponding intermediate laterally extending score lines, and said side flap panel sections and said tailpieces being inwardly folded along the corresponding outboard laterally extending score line, said side flap panel sections being adhesively sealed to the lateral margins of said back panel, said tabs being adhesively sealed to the underlying area of the outer margins of said inboard bottom gusset sections, portions of said tailpieces being adhesively sealed to the underlying extension flaps, and portions of the tailpieces being adhesively sealed to the underlying portion of the outboard bottom gusset sections exposed by said notches.
Claim 3
Dependent Claim
20 words
The expansible envelope of claim 1 including a top sealing flap hinged to the upper portion of said front panel.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |