Patent US3516185A successfully refreshed from Google Patents.
Patent US4071186A successfully refreshed from Google Patents.
US4071186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-closing bag
Assignee: Bagcraft Corp of America
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Filing: 1976-06-15
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Granted: 1978-01-31
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Expires: 1996-06-15
Abstract
Abstract A bag has an opening on its front side adjacent to its mouth which exposes the inner surface of the rear side, there being a first cohesive coating on such inner surface in registration with the opening, their being a second cohesive coating on the front side adjacent to the opening. After the contents have been placed in the bag, the end of the bag is folded over between the cohesive coatings so that they register with each other, and by their nature they adhere to each other in response to being pressed together.
Inventors
- 👤 Raymond J. Ruda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:08
CPC Classifications
B; B65; B65D; B65D33/00; B65D33/16; B65D33/18; B65D33/20
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
107 words
A self-closing bag comprising: a bag having a front side and a rear side extending to the mouth of the bag, said front side having an opening at the mouth of the bag, a first cohesive coating carried on an insert secured to the inner surface of said rear side in registration with said opening, said insert comprising material removed from said front side to provide said opening, and a second cohesive coating carried on the outer surface of said front side adjacent to said opening and facing the same way for cooperation with said first cohesive coating when the mouth-end of the bag is folded over.
Claim 2
Dependent Claim
107 words
A self-closing bag comprising: a bag having a front side and a rear side extending to the mouth of the bag, said front side having an opening at the mouth of the bag, a first cohesive coating carried on an insert secured to the inner surface of said rear side in registration with said opening, said insert comprising material removed from said front side to provide said opening, and a second cohesive coating carried on the outer surface of said front side adjacent to said opening and facing the same way for cooperation with said first cohesive coating when the mouth-end of the bag is folded over.
Claim 3
Dependent Claim
31 words
A bag according to claim 1 in which said opening extends lengthwise from the mouth of the bag for a distance which is at least one-fourth the width of the bag.
Claim 4
Dependent Claim
21 words
A bag according to claim 1 in which said insert has a periphery corresponding substantially to the periphery of said opening.
Claim 5
Dependent Claim
35 words
A bag according to claim 1 in which said opening is rectangular, the length of said opening being substantially equal to the distance that said opening is spaced from the lateral edges of said bag.
Claim 6
Dependent Claim
39 words
A bag according to claim 4 which includes at least one score line in said front and rear sides, extending between a corner of said opening at the mouth and the lateral edges of said bag at an angle.
References Cited (Backward Citations)
US2215989A
Cited
US2114367A
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US2274934A
Cited
US2314819A
Cited
US2313512A
Cited
US2962205A
Cited
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Cited
US3446420A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-30 | 1981-08-01 | 1982-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-30 | 1985-08-01 | 1986-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-30 | 1989-08-01 | 1990-01-31 | $7700.00 | Window Closed / Lapsed |