Patent US4449649A successfully refreshed from Google Patents.
US4449649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bulk material container
Assignee: Stone Container Corp
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Filing: 1982-01-15
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Granted: 1984-05-22
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Expires: 2002-01-15
Abstract
Abstract A bulk material container having a pair of slings connected to the sidewall thereof for supporting and transporting the container is provided with an opening in its bottom wall for dispensing bulk material therethrough. The opening is opened and closed by a slide valve gate having handles at opposed ends and an off-center opening adapted to be placed into full or partial registration with the opening in the bottom wall of the container to control the flow of bulk material from the container.
Inventors
- 👤 Jerry E. Flannigan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:22
CPC Classifications
B; B65; B65D; B65D88/00; B65D88/16; B65D88/1612; B65D88/1668; B65D88/1675; B65D88/1681; B65D88/1687; B65D90/00; B65D90/54; B65D90/58
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
205 words
A bulk material container comprising: a sidewall, a bottom wall closing one end of said sidewall, said bottom wall including a dispensing opening therethrough, a multi-ply looped sling extension wrapped around said container to enclose said bottom wall and opposite portions of said sidewall, thereby forming a sling for supporting and transporting said container, each of the plies of said looped sling extension which are adjacent said bottom wall including a dispensing opening therethrough, said dispensing openings all being in registration with each other; slide valve means between a pair of adjacent plies of said multi-ply looped sling extension for controlling the rate of flow of bulk material dispensed from said container through said dispensing openings, said slide valve means including: a push-pull plate so proportioned and constructed as to permit pushing and pulling at each end of the plate against the load of the material and having an opening extending therethrough which is adapted to be placed in and out of or in partial registration with the registered openings in said bottom wall and the plies of said looped sling extension, and handle means on each end of said push-pull plate for gripping and pushing and pulling said push-pull plate from opposite sides thereof.
Claim 2
Dependent Claim
205 words
A bulk material container comprising: a sidewall, a bottom wall closing one end of said sidewall, said bottom wall including a dispensing opening therethrough, a multi-ply looped sling extension wrapped around said container to enclose said bottom wall and opposite portions of said sidewall, thereby forming a sling for supporting and transporting said container, each of the plies of said looped sling extension which are adjacent said bottom wall including a dispensing opening therethrough, said dispensing openings all being in registration with each other; slide valve means between a pair of adjacent plies of said multi-ply looped sling extension for controlling the rate of flow of bulk material dispensed from said container through said dispensing openings, said slide valve means including: a push-pull plate so proportioned and constructed as to permit pushing and pulling at each end of the plate against the load of the material and having an opening extending therethrough which is adapted to be placed in and out of or in partial registration with the registered openings in said bottom wall and the plies of said looped sling extension, and handle means on each end of said push-pull plate for gripping and pushing and pulling said push-pull plate from opposite sides thereof.
Claim 3
Dependent Claim
20 words
The container of claim 1 wherein said handle means includes: a slot cut in opposite ends of said push-pull plate.
Claim 4
Dependent Claim
17 words
The container of claim 2 wherein said slots are wholly within the interior area of said plate.
Claim 5
Dependent Claim
63 words
The container of claim 1 wherein said handle means includes: opposed end portions of said push-pull plate doubled back and secured to the interior area of said plate, an opening extending from the interior of each doubled back portion to an end edge thereof, and a dowel for gripping said plate inserted through each of said doubled back plate portions across said opening.
Claim 6
Dependent Claim
14 words
The container of claim 1 wherein said push-pull plate is formed from kraft paper.
Claim 7
Dependent Claim
13 words
The container of claim 1 wherein said push-pull plate is formed from plastic.
Claim 8
Dependent Claim
22 words
The container of claim 1 wherein said opening in said plate is located closer to one of said handles than the other.
Claim 9
Dependent Claim
18 words
The container of claim 1 wherein said sidewall and said looped sling extension are formed from kraft paper.
Claim 10
Dependent Claim
20 words
The container of claim 1 wherein said sidewall and said looped sling extension are formed from a woven synthetic faric.
Claim 11
Dependent Claim
14 words
The container of claim 1 further comprising a girdle partially enclosing the periphery thereof.
Claim 12
Dependent Claim
23 words
The container of claim 1 further comprising means for securing said bottom wall to the adjoining, innermost ply of said looped sling extension.
References Cited (Backward Citations)
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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) | 1987-05-22 | 1987-11-21 | 1988-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-22 | 1991-11-21 | 1992-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-22 | 1995-11-21 | 1996-05-22 | $7700.00 | Window Closed / Lapsed |