Patent US3027243A successfully refreshed from Google Patents.
US3027243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reaction vessel with internal circulation tube and agitator
Assignee: Graham Engineering Corp
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Filing: 1959-09-10
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Granted: 1962-03-27
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Expires: 1979-09-10
Abstract
No abstract record available.
Inventors
- 👤 Herbert W Stratford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:25
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/18; B01J19/1868; B01J19/1875
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A MIXING DEVICE COMPRISING AN OUTER ENCLOSING SHELL, A CIRCULATING TUBE POSITIONED WITHIN SAID OUTER SHELL AND SPACED INWARDLY THEREFROM BOTH CONCENTRICALLY AND LONGITUDINALLY, A PAIR OF IMPELLERS POSITIONED WITHIN SAID CIRCULATING TUBE, DRIVING MEANS FOR SAID IMPELLERS, A POWER SOURCE CONNECTED TO SAID DRIVING MEANS FOR SAID IMPELLERS, AN OUTPUT PRODUCT OPENING IN SAID SHELL, AND A PAIR OF INPUT FLOW LINES FOR REACTION MIXTURE COMPONENTS EXTENDING INTO SAID SHELL AND SAID CIRCULATING TUBE AND SPACED RELATIVE ONE ANOTHER AND SAID CIRCULATING TUBE WHEREBY THE FLUID FLOW PASSES ONE INPUT LINE OUTLET BEFORE THE OTHER, THE OUTLET OF ONE OF SAID INPUT FLOW LINES BEING POSITIONED BETWEEN SAID IMPELLERS.
Claim 2
Dependent Claim
110 words
A MIXING DEVICE COMPRISING AN OUTER ENCLOSING SHELL, A CIRCULATING TUBE POSITIONED WITHIN SAID OUTER SHELL AND SPACED INWARDLY THEREFROM BOTH CONCENTRICALLY AND LONGITUDINALLY, A PAIR OF IMPELLERS POSITIONED WITHIN SAID CIRCULATING TUBE, DRIVING MEANS FOR SAID IMPELLERS, A POWER SOURCE CONNECTED TO SAID DRIVING MEANS FOR SAID IMPELLERS, AN OUTPUT PRODUCT OPENING IN SAID SHELL, AND A PAIR OF INPUT FLOW LINES FOR REACTION MIXTURE COMPONENTS EXTENDING INTO SAID SHELL AND SAID CIRCULATING TUBE AND SPACED RELATIVE ONE ANOTHER AND SAID CIRCULATING TUBE WHEREBY THE FLUID FLOW PASSES ONE INPUT LINE OUTLET BEFORE THE OTHER, THE OUTLET OF ONE OF SAID INPUT FLOW LINES BEING POSITIONED BETWEEN SAID IMPELLERS.
References Cited (Backward Citations)
US2031939A
Cited
US2875027A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-26 | 1965-09-25 | 1966-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-26 | 1969-09-25 | 1970-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-26 | 1973-09-25 | 1974-03-27 | $7700.00 | Window Closed / Lapsed |