US4065049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-layer bag open at one side
Assignee: Windmoeller and Hoelscher KG
•
Filing: 1975-12-11
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Granted: 1977-12-27
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Expires: 1995-12-11
Abstract
Abstract In a composite bag consisting of a paper or plastics outer envelope of one or more plies and a plastics inner envelope, the latter is closed at the base by a weld seam, the inner envelope material being incorporated in a welded or stitched base closure seam for the outer envelope. A line of weakness in the inner envelope material is disposed between the weld seam of the inner envelope and the base closure seam of the outer envelope.
Inventors
- 👤 Fritz Achelpohl
- 👤 Herbert Schmedding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:32
CPC Classifications
B; B65; B65D; B65D31/00; B65D31/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
91 words
A bag open at one side, comprising an outer bag of at least one ply of paper and having a base seam and an inner bag of plastics film provided with a base weld seam at a first end and a Z fold at a second end wherein the first end of the inner bag is securely fastened to the base seam of the outer bag and having a tear-off line of weakness disposed between the base seam of the outer bag and the base weld seam of the inner bag.
Claim 2
Dependent Claim
91 words
A bag open at one side, comprising an outer bag of at least one ply of paper and having a base seam and an inner bag of plastics film provided with a base weld seam at a first end and a Z fold at a second end wherein the first end of the inner bag is securely fastened to the base seam of the outer bag and having a tear-off line of weakness disposed between the base seam of the outer bag and the base weld seam of the inner bag.
Claim 3
Dependent Claim
38 words
A bag according to claim 1, wherein the base seam of the outer bag is formed by placing a rider strip-like reinforcing strip thereover and fastening the outer bag and the inner bag and the rider strip together.
Claim 4
Dependent Claim
97 words
A bag open at one side, comprising an outer bag of at least one ply of plastics material and having a base seam formed as a weld seam and an inner bag of plastics film provided with a base weld seam at a first end and a Z fold at a second end wherein the first end of the inner bag is securely fastened to the base seam of the outer bag and having a tear-off line of weakness disposed between the base seam of the outer bag and the base weld seam of the inner bag.
Claim 5
Dependent Claim
97 words
A bag open at one side, comprising an outer bag of at least one ply of plastics material and having a base seam formed as a weld seam and an inner bag of plastics film provided with a base weld seam at a first end and a Z fold at a second end wherein the first end of the inner bag is securely fastened to the base seam of the outer bag and having a tear-off line of weakness disposed between the base seam of the outer bag and the base weld seam of the inner bag.
References Cited (Backward Citations)
US2737339A
Cited
US2898027A
Cited
AT214352B
Cited
US3112057A
Cited
US3038651A
Cited
US3958749A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-12-26 | 1981-06-27 | 1981-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-26 | 1985-06-27 | 1985-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-26 | 1989-06-27 | 1989-12-27 | $7700.00 | Window Closed / Lapsed |