Patent US3262025A successfully refreshed from Google Patents.
US3262025A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic-flux pump
Assignee: California Institute Research Foundation
•
Filing: 1961-11-29
•
Granted: 1966-07-19
•
Expires: 1981-11-29
Abstract
No abstract record available.
Inventors
- 👤 Alvin F Hildebrandt
- 👤 Daniel D Elleman
- 👤 Frank C Whitmore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:32
CPC Classifications
H; H01; H01F; H01F6/00; H01F6/005; H10; H10N; H10N60/00; Y; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/88
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A MAGNETIC-FLUX PUMP COMPRISING WALLS DEFINING A FIRST AND SECOND CAVITY SEPARATED BY A SLOT, SAID WALLS BEING MADE OF A MATERIAL HAVING SUPERCONDUCTING PROPERTIES WHEN BELOW A CRITICAL TEMPERATURE, A BODY HAVING A FIRST PORTION MADE OF A MATERIAL HAVING SUPERCONDUCTING PROPERTIES WHEN BELOW A CERTAIN TEMPERATURE AND A SECOND PORTION MADE OF A FERROMAGNETIC MATERIAL, SAID FIRST AND SECOND PORTIONS OF THIS BODY EACH BEING SUFFICIENTLY LARGE TO SUBSTANTIALLY FILL SAID FIRST CAVITY AND TO BE SLIDABLY INSERTABLE THEREINTO, MEANS FOR SUPPORTING SAID FIRST AND SECOND PORTIONS OF SAID BODY ADJACENT ONE ANOTHER FOR SUCCESSIVE INSERTION OF SAID SECOND PORTION INTO SAID FIRST CAVITY BEFORE COOLING BETWEEN SAID CRITICAL TEMPERATURE AND FOR INSERTION OF SAID FIRST PORTION INTO SAID FIRST CAVITY AFTER COOLING BELOW SAID CRITICAL TEMPERATURE.
Claim 2
Dependent Claim
129 words
A MAGNETIC-FLUX PUMP COMPRISING WALLS DEFINING A FIRST AND SECOND CAVITY SEPARATED BY A SLOT, SAID WALLS BEING MADE OF A MATERIAL HAVING SUPERCONDUCTING PROPERTIES WHEN BELOW A CRITICAL TEMPERATURE, A BODY HAVING A FIRST PORTION MADE OF A MATERIAL HAVING SUPERCONDUCTING PROPERTIES WHEN BELOW A CERTAIN TEMPERATURE AND A SECOND PORTION MADE OF A FERROMAGNETIC MATERIAL, SAID FIRST AND SECOND PORTIONS OF THIS BODY EACH BEING SUFFICIENTLY LARGE TO SUBSTANTIALLY FILL SAID FIRST CAVITY AND TO BE SLIDABLY INSERTABLE THEREINTO, MEANS FOR SUPPORTING SAID FIRST AND SECOND PORTIONS OF SAID BODY ADJACENT ONE ANOTHER FOR SUCCESSIVE INSERTION OF SAID SECOND PORTION INTO SAID FIRST CAVITY BEFORE COOLING BETWEEN SAID CRITICAL TEMPERATURE AND FOR INSERTION OF SAID FIRST PORTION INTO SAID FIRST CAVITY AFTER COOLING BELOW SAID CRITICAL TEMPERATURE.
References Cited (Backward Citations)
US2916615A
Cited
US2946030A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |