Patent US3258252A successfully refreshed from Google Patents.
US3258252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for blending free-flowing granular materials
Assignee: Union Carbide Corp
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Filing: 1964-12-17
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Granted: 1966-06-28
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Expires: 1984-12-17
Abstract
No abstract record available.
Inventors
- 👤 Wayne S Lanier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:43
CPC Classifications
B; B01; B01F; B01F33/00; B01F33/40; B01F33/405; B01F33/4051; B01F33/40511
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
APPARATUS FOR BLENDING FREE-FLOWING GRANULAR MATERIALS COMPRISING A CHAMBER HAVING A WALL WHICH CONVERGES TOWARD AND TERMINATES IN AN OUTLET, A SUBSTANTIALLY VERTICALLY POSITIONED FENESTRATED TUBE SPACED ABOVE SAID OUTLET AND HAVING A PLURALITY OF ENTRANCE MEANS THEREIN AND A DIVERGENT BAFFLE MOUNTED BELOW SUBSTANTIALLY ALL OF SAID ENTRANCE MEANS, SAID BAFFLE BEING SO SPACED AS TO DEFINE AN ANNULAR CLEARNACE WITH THE WALL OF SAID CHAMBER, AN ASPIRATED TUBE EXTENDING SUBSTANTIALLY VERTICALLY THROUGH AND COAXIALLY WITH SAID FENESTRATED TUBE AND DEFINING AN ANNULAR SPACE BETWEEN SAID FENESTRATED TUBE AND SAID ASPIRATED TUBE, A FIRST AIR INLET MEANS EXTENDING UPWARDLY IN THE LOWER SECTION OF SAID CHAMBER AND TERMINATING AT THE LOWER END OF SAID ASPIRATED TUBE, A FLOW-ACCELERATING MEANS PROVIDED AT THE END OF SAID AIR INLET MEANS, AND A SECOND AIR INLET MEANS AT A POINT BELOW THE LOWER END OF SAID ASPIRATED TUBE.
Claim 2
Dependent Claim
146 words
APPARATUS FOR BLENDING FREE-FLOWING GRANULAR MATERIALS COMPRISING A CHAMBER HAVING A WALL WHICH CONVERGES TOWARD AND TERMINATES IN AN OUTLET, A SUBSTANTIALLY VERTICALLY POSITIONED FENESTRATED TUBE SPACED ABOVE SAID OUTLET AND HAVING A PLURALITY OF ENTRANCE MEANS THEREIN AND A DIVERGENT BAFFLE MOUNTED BELOW SUBSTANTIALLY ALL OF SAID ENTRANCE MEANS, SAID BAFFLE BEING SO SPACED AS TO DEFINE AN ANNULAR CLEARNACE WITH THE WALL OF SAID CHAMBER, AN ASPIRATED TUBE EXTENDING SUBSTANTIALLY VERTICALLY THROUGH AND COAXIALLY WITH SAID FENESTRATED TUBE AND DEFINING AN ANNULAR SPACE BETWEEN SAID FENESTRATED TUBE AND SAID ASPIRATED TUBE, A FIRST AIR INLET MEANS EXTENDING UPWARDLY IN THE LOWER SECTION OF SAID CHAMBER AND TERMINATING AT THE LOWER END OF SAID ASPIRATED TUBE, A FLOW-ACCELERATING MEANS PROVIDED AT THE END OF SAID AIR INLET MEANS, AND A SECOND AIR INLET MEANS AT A POINT BELOW THE LOWER END OF SAID ASPIRATED TUBE.
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 |