Patent US1287440A successfully refreshed from Google Patents.
Patent US3210772A successfully refreshed from Google Patents.
US3210772A
Expired / Lapsed
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Pelletizing and sizing drum
Assignee: STIRLING SINTERING CORP
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Filing: 1963-04-19
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Granted: 1965-10-05
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Expires: 1983-04-19
Abstract
No abstract record available.
Inventors
- 👤 Harold T Stirling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:31
CPC Classifications
B; B01; B01J; B01J2/00; B01J2/12
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
109 words
APPARATUS FOR THE PRODUCTION OF PRESSURE HARDENED PELLETS FROM PULVERULENT MATERIAL COMPRISING, A ROTATABLY MOUNTED TRUNCATED CONICAL DRUM MEMBER FOR FORMING PELLETS FROM SAID PULVERULENT MATERIAL, SAID DRUM MEMBER HAVING A BASE FORMING THE BACK WALL OF THE DRUM, A SIDE WALL, AND AN OPEN UPPER END, A PAIR OF CONCENTRIC SIZING SCREENS MOUNTED ADJACENT THE OPEN END OF SAID DRUM TO SEPARATE OVERSIZE AND UNDERSIZE PELLETS FROM PELLETS OF A PREDETERMINED SIZE, A ROLL DRYER CONCENTRICALLY MOUNTED AROUND SAID DRUM AND ADAPTED TO RECEIVE SAID PELLETS OF A PREDETERMINED SIZE FROM SAID SIZING SCREENS, AND MEANS TO PASS AIR THROUGH SAID ROLL DRYER TO DRY SAID SIZE PELLETS.
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) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |