US2890940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic stirring method
Assignee: AT&T Inc
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Filing: 1957-06-25
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Granted: 1959-06-16
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Expires: 1977-06-25
Abstract
No abstract record available.
Inventors
- 👤 William G Pfann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:08
CPC Classifications
C; C30; C30B; C30B13/00; C30B13/26; B; B01; B01F; B01F33/00; B01F33/45; B01F33/451
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
THE METHOD OF AGITATING A LIQUID MATERIAL HAVING A HOLLOW CROSS-SECTION COMPRISING IMPRESSING A MAGNETIC FIELD IN A RADICAL DIRECTION ACROSS SUCH MATERIAL AND CAUSING AN ELECTRICAL CURRENT TO FLOW THROUGH THE MATERIAL SUCH THAT THERE IS A COMPONENT OF CURRENT FLOW AT AN ANGLE OF 90 DEGREES TO THE DIRECTION OF THE SAID MAGNETIC FIELD SO THAT THERE IS PRODUCED WITHIN TEH SAID MATERIAL A FORCE REACTIVE TO THE SAID COMPONENTS OF MAGNETIC FIELD AND CURRENT FLOW THEREBY PRODUCING NET LIQUID FLOW WITHIN THE SAID MATERIAL IN A CIRCUMFERENTIAL DIRECTION ABOUT THE SECTION.
Claim 2
Independent Claim
94 words
THE METHOD OF AGITATING A LIQUID MATERIAL HAVING A HOLLOW CROSS-SECTION COMPRISING IMPRESSING A MAGNETIC FIELD IN A RADICAL DIRECTION ACROSS SUCH MATERIAL AND CAUSING AN ELECTRICAL CURRENT TO FLOW THROUGH THE MATERIAL SUCH THAT THERE IS A COMPONENT OF CURRENT FLOW AT AN ANGLE OF 90 DEGREES TO THE DIRECTION OF THE SAID MAGNETIC FIELD SO THAT THERE IS PRODUCED WITHIN TEH SAID MATERIAL A FORCE REACTIVE TO THE SAID COMPONENTS OF MAGNETIC FIELD AND CURRENT FLOW THEREBY PRODUCING NET LIQUID FLOW WITHIN THE SAID MATERIAL IN A CIRCUMFERENTIAL DIRECTION ABOUT THE SECTION.
References Cited (Backward Citations)
GB555214A
Cited
US2729088A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-15 | 1962-12-15 | 1963-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-15 | 1966-12-15 | 1967-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-15 | 1970-12-15 | 1971-06-16 | $7700.00 | Window Closed / Lapsed |