Patent US3258041A successfully refreshed from Google Patents.
US3258041A
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Method and apparatus for filling bags
Assignee: Amcor Flexibles North America Inc
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Filing: 1964-03-02
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Granted: 1966-06-28
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Expires: 1984-03-02
Abstract
No abstract record available.
Inventors
- 👤 Erwin M Lau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:33
CPC Classifications
B; B65; B65B; B65B1/00; B65B1/04; B65B1/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
THE METHOD OF FILLING A BAG WITH POWDERED, GRANULAR, OR FLAKY MATERIAL WHICH COMPRISES THE STEPS OF FLUIDIZING AT LEAST THE LOWER PART OF A BODY OF MATERIAL TO ESTABLISH A GRAVITATIONAL HEAD, CAUSING THE FLUIDIZED MATERIAL TO FLOW THROUGH A HORIZONTAL PASSAGEWAY UNDER THE INFLUENCE OF SAID GRAVITATIONAL HEAD, ALLEVIATING THE FLUIDIZING AIR FROM THE FLUIDIZED MATERIAL WHICH IT IS IN MOTION, AND PERMITTING THE INERTIA OF SAID UNFLUIDIZED MATERIAL TO CARRY IT THROUGH THE REMAINING PORTION OF SAID PASSAGEWAY AND THROUGH THE OPEN END THEREOF AND INTO SAID BAG.
Claim 2
Independent Claim
91 words
THE METHOD OF FILLING A BAG WITH POWDERED, GRANULAR, OR FLAKY MATERIAL WHICH COMPRISES THE STEPS OF FLUIDIZING AT LEAST THE LOWER PART OF A BODY OF MATERIAL TO ESTABLISH A GRAVITATIONAL HEAD, CAUSING THE FLUIDIZED MATERIAL TO FLOW THROUGH A HORIZONTAL PASSAGEWAY UNDER THE INFLUENCE OF SAID GRAVITATIONAL HEAD, ALLEVIATING THE FLUIDIZING AIR FROM THE FLUIDIZED MATERIAL WHICH IT IS IN MOTION, AND PERMITTING THE INERTIA OF SAID UNFLUIDIZED MATERIAL TO CARRY IT THROUGH THE REMAINING PORTION OF SAID PASSAGEWAY AND THROUGH THE OPEN END THEREOF AND INTO SAID BAG.
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) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |