US4093074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Envelopes
Assignee: Individual
•
Filing: 1977-06-24
•
Granted: 1978-06-06
•
Expires: 1997-06-24
Abstract
Abstract The present invention provides unique improvements in an envelope having a front panel, a top flap, a bottom flap, and two side flaps. In one form, an improved bottom flap is provided with a substantially T-shaped portion having a leg glued to the side flaps, and having two wings extending laterally from the leg but not attached to the side flaps. The top flap is provided with cooperatively-spaced glued portions which may adhere to the wings but not to the leg. When the envelope is opened, the wings are torn from the leg. Another form of the improved envelope is top loading and bottom opening. In this form, marginal portions of the side flaps are provided with a plurality of inverted, substantially U-shaped slits. Glued portions of the bottom flap engage these side flap marginal portions. The central portion of the bottom flap is unglued and is not covered by the top flap. This unglued portion may be pulled downwardly to tear such slitted portions from the side flaps.
Inventors
- 👤 William E. Bielawski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:50
CPC Classifications
B; B65; B65D; B65D27/00; B65D27/32; B65D27/34
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
193 words
An envelope having a front panel, a bottom flap, a top flap, and two side flaps, and wherein said bottom flap is folded to have first marginal portions thereof overlap first marginal portions of said side flaps and is glued to said side flap first marginal portions to form a back panel, and wherein said top flap may be selectively folded to have first marginal portions thereof overlap second marginal portions of said side flaps, the improvement which comprises: an improved bottom flap adapted to reinforce said back panel and adapted to facilitate opening of said envelope, said improved bottom flap including a substantially T-shaped portion having a leg and two wings extending laterally from said leg in opposite directions, said leg being glued to third marginal portions of said side flaps with said wings being unattached to said side flaps; and spaced glue portions provided on said top flap first marginal portions and adapted to adhere to said wings but not said leg; whereby said envelope may be opened by grasping such unglued portion of said top flap overlapping said leg and pulling the same to tear said wings from said leg.
Claim 2
Dependent Claim
193 words
An envelope having a front panel, a bottom flap, a top flap, and two side flaps, and wherein said bottom flap is folded to have first marginal portions thereof overlap first marginal portions of said side flaps and is glued to said side flap first marginal portions to form a back panel, and wherein said top flap may be selectively folded to have first marginal portions thereof overlap second marginal portions of said side flaps, the improvement which comprises: an improved bottom flap adapted to reinforce said back panel and adapted to facilitate opening of said envelope, said improved bottom flap including a substantially T-shaped portion having a leg and two wings extending laterally from said leg in opposite directions, said leg being glued to third marginal portions of said side flaps with said wings being unattached to said side flaps; and spaced glue portions provided on said top flap first marginal portions and adapted to adhere to said wings but not said leg; whereby said envelope may be opened by grasping such unglued portion of said top flap overlapping said leg and pulling the same to tear said wings from said leg.
Claim 3
Dependent Claim
34 words
The improvement as set forth in claim 1 wherein said T-shaped portion is provided with a slit between said leg and each of said wings to facilitate such tearing when said envelope is opened.
Claim 4
Dependent Claim
23 words
The improvement as set forth in claim 1 wherein said spaced glue portions are arranged to overlap and adhere to said side flaps.
Claim 5
Dependent Claim
207 words
An envelope having a front panel, a substantially triangular bottom flap, a top flap, and two side flaps, and wherein said bottom flap is folded to have first marginal portions thereof overlap first marginal portions of said side flaps, and wherein said top flap may be selectively folded to have a glued portion along a first marginal portion thereof overlap and adhere to second marginal portions of said side flaps, the improvement which comprises: a plurality of spaced slits provided in said first marginal portions of said side flaps, each of said slits being substantially U-shaped; and two glued portions provided on said bottom flap first marginal portions and adhering to said first marginal portions of said side flaps both between and within said slits, each of said glued portions extending inwardly of said bottom flap from an inclined edge thereof and extending therealong for a continuous distance, said glued portions being spaced from one another such that a central portion of said bottom flap proximate the apex thereof is not glued to said side flaps, whereby said envelope may be opened by grapsing said central portion of said bottom flap, and pulling said bottom flap to tear portions within said U-shaped slits from sid side flaps.
Claim 6
Dependent Claim
207 words
An envelope having a front panel, a substantially triangular bottom flap, a top flap, and two side flaps, and wherein said bottom flap is folded to have first marginal portions thereof overlap first marginal portions of said side flaps, and wherein said top flap may be selectively folded to have a glued portion along a first marginal portion thereof overlap and adhere to second marginal portions of said side flaps, the improvement which comprises: a plurality of spaced slits provided in said first marginal portions of said side flaps, each of said slits being substantially U-shaped; and two glued portions provided on said bottom flap first marginal portions and adhering to said first marginal portions of said side flaps both between and within said slits, each of said glued portions extending inwardly of said bottom flap from an inclined edge thereof and extending therealong for a continuous distance, said glued portions being spaced from one another such that a central portion of said bottom flap proximate the apex thereof is not glued to said side flaps, whereby said envelope may be opened by grapsing said central portion of said bottom flap, and pulling said bottom flap to tear portions within said U-shaped slits from sid side flaps.
Claim 7
Dependent Claim
33 words
The improvement as set forth in claim 4 wherein said top flap has a substantially triangular shape, and wherein said top flap does not overlap said bottom flap when said envelope is 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) | 1981-06-05 | 1981-12-05 | 1982-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-05 | 1985-12-05 | 1986-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-05 | 1989-12-05 | 1990-06-06 | $7700.00 | Window Closed / Lapsed |