Patent US4223709A successfully refreshed from Google Patents.
US4223709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced flexible container
Assignee: Norsk Hydro ASA
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Filing: 1979-05-15
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Granted: 1980-09-23
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Expires: 1999-05-15
Abstract
Abstract A reinforced flexible container unit includes a flexible container having an upper section with lifting loops, a filling opening, a container bottom, and a central section formed by side walls extending from the container bottom to the upper section. The central section has a height portion extending upwardly from the container bottom and adapted to be contacted by bulk material when the container is filled with such bulk material. A reinforcing belt or belts are positioned to extend around the entire circumference of the central section of the container at least at a lower portion thereof adjacent the container bottom. The belt or belts have an open lower end and do not cover or enclose the container bottom. The belt or belts have a total width of from one-third of the height portion of the central section of the container equal to the height of such height section.
Inventors
- 👤 Eirik Myklebust
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:20
CPC Classifications
B; B65; B65D; B65D88/00; B65D88/16; B65D88/1612; B65D88/1675; B65D88/1681
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
199 words
A reinforced flexible container unit for transportion and storage of bulk material, said unit comprising: a flexible container including an upper section having lifting loops and a filling opening, a container bottom, and a central section formed by side walls extending from said container bottom to said upper section, said central section having a height portion extending upwardly from said container bottom and adapted to be contacted by bulk material when said container is filled with such bulk material; and reinforcing means for reinforcing said container against rupture caused by strain imparted to said container when filled with bulk material upon dropping of such filled container, said reinforcing means comprising at least one belt formed of a material capable of resisting said strain, said belt being positioned to extend around the entire circumference of said central section of said container at least at a lower portion thereof adjacent said container bottom, said belt having an open lower end, said belt not covering or enclosing said container bottom, and the total width of said belt being from one-third the height of said height portion of said central section of said container to equal to said height of said height portion.
Claim 2
Dependent Claim
199 words
A reinforced flexible container unit for transportion and storage of bulk material, said unit comprising: a flexible container including an upper section having lifting loops and a filling opening, a container bottom, and a central section formed by side walls extending from said container bottom to said upper section, said central section having a height portion extending upwardly from said container bottom and adapted to be contacted by bulk material when said container is filled with such bulk material; and reinforcing means for reinforcing said container against rupture caused by strain imparted to said container when filled with bulk material upon dropping of such filled container, said reinforcing means comprising at least one belt formed of a material capable of resisting said strain, said belt being positioned to extend around the entire circumference of said central section of said container at least at a lower portion thereof adjacent said container bottom, said belt having an open lower end, said belt not covering or enclosing said container bottom, and the total width of said belt being from one-third the height of said height portion of said central section of said container to equal to said height of said height portion.
Claim 3
Dependent Claim
23 words
A reinforced flexible container unit as claimed in claim 1, further comprising an inner sack of impervious material positioned within said flexible container.
Claim 4
Dependent Claim
49 words
A reinforced flexible container unit as claimed in claim 1, wherein said at least one belt comprises a tubular woven belt of textile material, said woven belt being attached to said flexible container and having a width of from one-third to two-thirds of said height of said height portion.
Claim 5
Dependent Claim
33 words
A reinforced flexible container unit as claimed in claim 3, wherein said woven belt is formed of the same material and has the same weaving density and fiber thickness as said flexible container.
Claim 6
Dependent Claim
27 words
A reinforced flexible container unit as claimed in claims 1 or 3, wherein said belt is secured to said flexible container by means of tape or threads.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-09-23 | 1984-03-24 | 1984-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-23 | 1988-03-24 | 1988-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-23 | 1992-03-24 | 1992-09-23 | $7700.00 | Window Closed / Lapsed |