Patent US3832725A successfully refreshed from Google Patents.
Patent US3759438A successfully refreshed from Google Patents.
US3759438A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic bag having reclosing means
Assignee: BAGCRAFT CORP
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Filing: 1970-08-14
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Granted: 1973-09-18
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Expires: 1990-08-14
Abstract
Abstract A plastic bag of heat-sealable material is provided with a length of wire covered with a flat strip of paper adjacent to the mouth end of the bag, there being a heat-seal connection holding the paper strip against the bag material.
Inventors
- 👤 R Ruda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:10
CPC Classifications
B; B65; B65D; B65D33/00; B65D33/16; B65D33/30; Y; Y10; Y10S; Y10S383/00; Y10S383/905
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
153 words
A bag assembly comprising in combination: a. a normally flat bag of heat-sealable film-type of material having a mouth end, and having side edges which comprise parallel heat seals; b. a flat strip of substantially straight paper-covered wire, said strip being disposed along said mouth end, and being substantially shorter than the distance between said heat seals, each of the ends of said strip being spaced from said heat seals to enable burn-through formation of said heat seals with said wire in position; and c. a connection between the bag covering of said strip and said material of said bag, said connection being permanent at least at the central portion of said paper strip and comprising a layer of film-type of material overlying only the central portion of said strip, whereby each of the ends of said strip projects beyond an edge of said layer but terminates short of the nearer heat seal.
Claim 2
Dependent Claim
153 words
A bag assembly comprising in combination: a. a normally flat bag of heat-sealable film-type of material having a mouth end, and having side edges which comprise parallel heat seals; b. a flat strip of substantially straight paper-covered wire, said strip being disposed along said mouth end, and being substantially shorter than the distance between said heat seals, each of the ends of said strip being spaced from said heat seals to enable burn-through formation of said heat seals with said wire in position; and c. a connection between the bag covering of said strip and said material of said bag, said connection being permanent at least at the central portion of said paper strip and comprising a layer of film-type of material overlying only the central portion of said strip, whereby each of the ends of said strip projects beyond an edge of said layer but terminates short of the nearer heat seal.
Claim 3
Dependent Claim
39 words
A bag assembly according to claim 1 in which said layer of film-type of material is a separate strip that has a heat-seal connection substantially co-extensive with the area of such layer that is directly adjacent to the bag.
Claim 4
Dependent Claim
37 words
A bag assembly according to claim 1 in which said layer is in the form of a flap which is an original part of the bag integral therewith along a fold at the edge of the flap.
References Cited (Backward Citations)
US3150813A
Cited
US3688973A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |