Patent US3664530A successfully refreshed from Google Patents.
US3664530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for automatically and successively opening the bags of powder
Assignee: Individual
•
Filing: 1970-06-15
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Granted: 1972-05-23
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Expires: 1990-06-15
Abstract
Abstract AN APPARATUS FOR AUTOMATICALLY AND SUCCESIVELY OPENING POWDER CONTAINING BAGS. A CONVEYOR IS PROVIDED ON WHICH THE BAG IS TRANSPORTED. CUTTERS ARE POSITIONED ALONG THE CONVEYOR WHICH CUT OPEN USUALLY THREE SIDES OF THE BAG AS IT IS TRANSPORTED BY SAID CONVEYOR. THE CONTENTS OF THE OPENED BAG ARE COLLECTION IN A COLLECTING MEANS POSITIONED BELOW THE END OF THE CONVEYOR, AND A BAG TAKE-UP MEANS TAKES UP THE OPENED BAG AS IT IS UNFOLDED AROUND THE UNCUT SIDE OF THE BAG.
Inventors
- 👤 Hirofumi Takiguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:58
CPC Classifications
B; B65; B65B; B65B69/00; B65B69/0008
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |