US3811564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Container construction
Assignee: Lehigh Press LLC
•
Filing: 1972-07-12
•
Granted: 1974-05-21
•
Expires: 1992-07-12
Abstract
Abstract A container wherein one wall is flexible and formed with a score adapted to fracture upon flexure to provide an opening into the container.
Inventors
- 👤 R Braber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:14
CPC Classifications
B; B65; B65D; B65D75/00; B65D75/52; B65D75/58; B65D75/5827; B65D75/5833; B65B; B65B47/00; B65B47/02; B65D75/28; B65D75/30; B65D75/32; B65D75/325; B65D75/327; B65D2575/00; B65D2575/28; B65D2575/30; B65D2575/32; B65D2575/3209; B65D2575/3218; B65D2575/3227; B65D2585/00; B65D2585/56; Y; Y10; Y10S; Y10S229/00; Y10S229/927
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
105 words
An hermetically sealed container construction comprising a pair of flexible facing sheets, securing means securing said sheets together about a closed outline configuration, the enclosed region within said configuration being unsecured for enclosing contents, an imperforate score on the enclosed region of one of said sheets, and imperforate scored extensions extending generally longitudinally of each other from spaced regions of said score, said one sheet being sufficiently frangible to fracture through said score upon flexure in bending of said sheets along said score to provide an exposed fingerpull edge for severing said score extensions, whereby said enclosed region is openable for access to the contents.
Claim 2
Dependent Claim
105 words
An hermetically sealed container construction comprising a pair of flexible facing sheets, securing means securing said sheets together about a closed outline configuration, the enclosed region within said configuration being unsecured for enclosing contents, an imperforate score on the enclosed region of one of said sheets, and imperforate scored extensions extending generally longitudinally of each other from spaced regions of said score, said one sheet being sufficiently frangible to fracture through said score upon flexure in bending of said sheets along said score to provide an exposed fingerpull edge for severing said score extensions, whereby said enclosed region is openable for access to the contents.
Claim 3
Dependent Claim
20 words
A cOntainer construction according to claim 1, said sheets being insufficiently frangible to fracture upon flexure except at said score.
Claim 4
Dependent Claim
42 words
A container construction according to claim 1, the other of said sheets including a contents receiving formation extending away from and facing toward said one sheet in the area between said score and score extensions, and said one sheet being generally flat.
Claim 5
Dependent Claim
30 words
A container construction according to claim 4, said other sheet being generally flat in the region adjacent to said score, to facilitate simultaneous flexing of both sheets along said score.
Claim 6
Dependent Claim
20 words
A container construction according to claim 1, said one sheet having the approximate frangibility of .010 inches thickness polyvinyl chloride.
Claim 7
Dependent Claim
33 words
A container construction according to claim 1, said one sheet being fabricated of semi-rigid polyvinyl chloride and having a residual thickness at the score so as to fracture upon manual flexure in bending.
References Cited (Backward Citations)
US26477A
Cited
US2705579A
Cited
US2997043A
Cited
US2993590A
Cited
US3136418A
Cited
US3275203A
Cited
US3353664A
Cited
US3635376A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-20 | 1977-11-19 | 1978-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-20 | 1981-11-19 | 1982-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-20 | 1985-11-19 | 1986-05-21 | $7700.00 | Window Closed / Lapsed |