US3784056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Moisture-impermeable package
Assignee: Kimberly Clark Tissue Co
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Filing: 1972-11-06
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Granted: 1974-01-08
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Expires: 1992-11-06
Abstract
Abstract A moisture-impermeable package including a flexible container having a bottom wall and side walls extending upwardly from the bottom wall. The side walls terminate in upper marginal ends which define an opening into the container. A thin, flexible, substantially non-stretchable closure is secured to the container and extends over the opening defined by the marginal ends. The closure has overlapping sections which define a slit that is elongate in a predetermined direction, and the container is in a differentially stressed condition to apply slit-sealing tension forces to the closure in the direction of slit elongation whereby the overlapping sections of the closure defining the slit are maintained in sealing relationship for establishing a substantially moisture-impermeable closure.
Inventors
- 👤 H Spruyt
- 👤 L Hoffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:20
CPC Classifications
B; B65; B65D; B65D77/00; B65D77/10; B65D77/20; B65D77/2024; B65D83/00; B65D83/08; B65D83/0805; A; A47; A47K; A47K10/00; A47K10/24; A47K10/32; A47K10/42; A47K2010/428; Y; Y10; Y10S; Y10S206/00; Y10S206/812
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
123 words
A moisture-impermeable package comprising: A. a flexible container having a bottom wall and side walls, said side walls extending upwardly from said bottom wall and terminating in upper marginal ends which define an opening into the container; B. a thin, flexible, substantially non-stretchable closure secured to said container and extending over the opening thereinto, said closure having overlapping sections defining a slit which is elongate in a predetermined direction; and C. said container being in an equilibrium, differentially stressed condition for applying slit-sealing tension forces to said closure in the direction of slit elongation, whereby the overlapping sections of said closure defining the slit are maintained in sealing relationship with respect to each other to establish a substantially moisture-impermeable closure for the container.
Claim 2
Dependent Claim
123 words
A moisture-impermeable package comprising: A. a flexible container having a bottom wall and side walls, said side walls extending upwardly from said bottom wall and terminating in upper marginal ends which define an opening into the container; B. a thin, flexible, substantially non-stretchable closure secured to said container and extending over the opening thereinto, said closure having overlapping sections defining a slit which is elongate in a predetermined direction; and C. said container being in an equilibrium, differentially stressed condition for applying slit-sealing tension forces to said closure in the direction of slit elongation, whereby the overlapping sections of said closure defining the slit are maintained in sealing relationship with respect to each other to establish a substantially moisture-impermeable closure for the container.
Claim 3
Dependent Claim
13 words
The package according to claim 1, including moistened fibrous webs within said container.
Claim 4
Dependent Claim
32 words
The package according to claim 1, wherein the upper marginal ends of said side walls define a quadrilateral in plan view, said slit being oriented in a diagonal direction of said quadrilateral.
Claim 5
Dependent Claim
15 words
The package according to claim 3, wherein said quadrilateral is substantially rectangular in plan view.
Claim 6
Dependent Claim
27 words
The package according to claim 1, wherein said container is pre-shaped in a configuration different from the equilibrium configuration which is established with the closure adhered thereto.
Claim 7
Dependent Claim
32 words
The package according to claim 5, wherein the upper marginal ends of said side walls define a quadrilateral in plan view, said slit being oriented in a diagonal direction of said quadrilateral.
Claim 8
Dependent Claim
52 words
The package according to claim 6, wherein the upper marginal ends of the side walls of the pre-shaped container generally define a rhomboid in plan view, said upper ends being disposed in a substantially rectangular configuration in plan view when the container is in an equilibrium condition with the closure secured thereto.
Claim 9
Dependent Claim
106 words
A moisture-impermeable package comprising: A. a flexible container having a bottom wall and side walls extending upwardly from said bottom wall and terminating in upper marginal ends which define a quadrilateral in plan view, said container being in an equilibrium, stressed condition in which one diagonal dimension of the quadrilateral is shorter, and the other diagonal dimension is longer than the corresponding diagonal dimensions of the unstressed container; and B. a thin, flexible closure secured to said container and extending over the opening into said container, said closure having overlapping sections defining a slit which is elongate along the shortened diagonal dimension of the stressed container.
Claim 10
Dependent Claim
106 words
A moisture-impermeable package comprising: A. a flexible container having a bottom wall and side walls extending upwardly from said bottom wall and terminating in upper marginal ends which define a quadrilateral in plan view, said container being in an equilibrium, stressed condition in which one diagonal dimension of the quadrilateral is shorter, and the other diagonal dimension is longer than the corresponding diagonal dimensions of the unstressed container; and B. a thin, flexible closure secured to said container and extending over the opening into said container, said closure having overlapping sections defining a slit which is elongate along the shortened diagonal dimension of the stressed container.
Claim 11
Dependent Claim
22 words
The package according to claim 8, wherein the quadrilateral defined by the upper marginal ends of the stressed container is substantially rectangular.
Claim 12
Dependent Claim
24 words
The package according to claim 9, wherein said side walls include opposed substantially parallel long side walls and opposed substantially parallel short side walls.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |