US3829007A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastics-film bags
Assignee: British Visqueen Ltd
•
Filing: 1972-04-28
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Granted: 1974-08-13
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Expires: 1992-04-28
Abstract
Abstract Carrier or other bag of plastics, e.g. high density polyethylene, bottom-gusseted and block-ended, in which strips, preferably of the same plastics, are sealed along the base in specified manner, rendering the opened bag substantially freestanding.
Inventors
- 👤 A Ellison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:02
CPC Classifications
B; B65; B65D; B65D33/00; B65D33/02; B65D31/00; B31; B31B; B31B2155/00; B31B2155/001; B31B2155/0014; B31B2160/00; B31B2160/20
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
134 words
An open-mouthed plastics-film bag of the type comprising a front panel, a back panel, and a bottom gusset panel, seams joining edges of the bottom gusset panel to the adjacent side edges of the lower portions of the front and back panels, and seams joining together the adjacent side edges of the remaining portions of the front and back panels, in which an additional strip of material is joined to the bag substantially along each of the lines at which the bottom edge of the front panel and the bottom edge of the back panel join the bottom gusset panel, the strips extending a finite distance from said lines to lie against the lower parts of the front and back panels, and each strip having its ends joined to the sides of the bag.
Claim 2
Dependent Claim
134 words
An open-mouthed plastics-film bag of the type comprising a front panel, a back panel, and a bottom gusset panel, seams joining edges of the bottom gusset panel to the adjacent side edges of the lower portions of the front and back panels, and seams joining together the adjacent side edges of the remaining portions of the front and back panels, in which an additional strip of material is joined to the bag substantially along each of the lines at which the bottom edge of the front panel and the bottom edge of the back panel join the bottom gusset panel, the strips extending a finite distance from said lines to lie against the lower parts of the front and back panels, and each strip having its ends joined to the sides of the bag.
Claim 3
Dependent Claim
25 words
A bag as claimed in claim 1 in which the front, back and gusset panels and the strips are all of the same plastics film.
Claim 4
Dependent Claim
33 words
A bag as claimed in claim 1 in which the strips lie against the bottom gusset panel, and each is of a width not exceeding half the width of the bottom gusset panel.
Claim 5
Dependent Claim
17 words
A bag as claimed in claim 1 in which the strips are positioned externally on the bag.
Claim 6
Dependent Claim
21 words
A bag as claimed in claim 1 in which the front and back panels are integral with the bottom gusset panel.
Claim 7
Dependent Claim
43 words
A bag as claimed in claim 1 in which the ends of the strips are included in the seams joining the side edges of the bottom gusset panel to the adjacent side edges of the lower portions of the front and back panels.
Claim 8
Dependent Claim
34 words
A bag as claimed in claim 6 in which each strip has two layers and is formed as a folded-over extension of the bottom gusset panel and one of the front and back panel.
Claim 9
Dependent Claim
13 words
A bag as claimed in claim 1, in the form of a carrier-bag.
Claim 10
Dependent Claim
14 words
A bag as claimed in claim 1, formed of film of high density polyethylene.
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) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |