Patent US3285295A successfully refreshed from Google Patents.
US3285295A
Expired / Lapsed
US
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Method and apparatus for filling containers with powdered or granular materials
Assignee: ST Regis Paper Co
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Filing: 1965-06-14
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Granted: 1966-11-15
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Expires: 1985-06-14
Abstract
No abstract record available.
Inventors
- 👤 Oliver R Titchenal
- 👤 Louis L Legg
- 👤 Ivar H Stockel
- 👤 Harry D O'neal
- 👤 Robert B Wheeler
- 👤 Stephen F Chalpin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:03
CPC Classifications
B; B65; B65B; B65B1/00; B65B1/04; B65B1/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A METHOD OF PACKAGING DRY, DIVIDED SOLID MATERIAL, COMPRISING: INTRODUCING SAID MATERIAL FROM A SUPPLY BIN INTO AN INFEED DUCT HAVING REDUCED PASSGE AREA, PASSING SAID MATERIAL FROM SAID INFEED DUCT INTO A CLOSED DISPENSING BIN HAVING INCREASED PASSAGE AREA, PASSING SAID MATERIAL FROM SAID DISPENSING BIN INTO A DISPENSING DUCT OF REDUCED PASSAGE AREA AND FORMING A RELEASABLE MATERIAL BARRIER IN SAID DISPENSING DUCT, THENCE SIMULTANEOUSLY INJECTING AIR UNDER PRESSURE INTO AT LEAST AN UPPER PORTION OF SAID DISPENSING BIN, FORMING A RELEASABLE MATERIAL BARRIER IN SAID INLET DUCT, AND RELEASING SAID MATERIAL BARRIER IN SAID DISPENSING DUCT, PASSING SAID MATERIAL FROM SAID DISPENSING BIN THROUGH SAID DISPENSING DUCT INTO A PACKAGING CONTAINER TO A PRESELECTED WEIGHT, AND PRIOR TO ATTAINMENT OF SAID WEIGHT, TERMINATING THE INJECTED AIR FLOW TO DRIBBLE-FEED SAID MATERIAL INTO SAID PACKAGING CONTAINER UNTIL SAID PRESELECTED WEIGHT IS ATTAINED, AND REPEATING SAID METHOD FOR THE FILLING OF ADDITIONAL CONTAINERS.
Claim 2
Independent Claim
154 words
A METHOD OF PACKAGING DRY, DIVIDED SOLID MATERIAL, COMPRISING: INTRODUCING SAID MATERIAL FROM A SUPPLY BIN INTO AN INFEED DUCT HAVING REDUCED PASSGE AREA, PASSING SAID MATERIAL FROM SAID INFEED DUCT INTO A CLOSED DISPENSING BIN HAVING INCREASED PASSAGE AREA, PASSING SAID MATERIAL FROM SAID DISPENSING BIN INTO A DISPENSING DUCT OF REDUCED PASSAGE AREA AND FORMING A RELEASABLE MATERIAL BARRIER IN SAID DISPENSING DUCT, THENCE SIMULTANEOUSLY INJECTING AIR UNDER PRESSURE INTO AT LEAST AN UPPER PORTION OF SAID DISPENSING BIN, FORMING A RELEASABLE MATERIAL BARRIER IN SAID INLET DUCT, AND RELEASING SAID MATERIAL BARRIER IN SAID DISPENSING DUCT, PASSING SAID MATERIAL FROM SAID DISPENSING BIN THROUGH SAID DISPENSING DUCT INTO A PACKAGING CONTAINER TO A PRESELECTED WEIGHT, AND PRIOR TO ATTAINMENT OF SAID WEIGHT, TERMINATING THE INJECTED AIR FLOW TO DRIBBLE-FEED SAID MATERIAL INTO SAID PACKAGING CONTAINER UNTIL SAID PRESELECTED WEIGHT IS ATTAINED, AND REPEATING SAID METHOD FOR THE FILLING OF ADDITIONAL CONTAINERS.
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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) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |