US3257579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Particle-confining devices having magnetic mirrors
Assignee: Thales SA
•
Filing: 1960-04-07
•
Granted: 1966-06-21
•
Expires: 1980-04-07
Abstract
No abstract record available.
Inventors
- 👤 Delcroix Jean
- 👤 Quemada Daniel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:23
CPC Classifications
H; H01; H01J; H01J27/00; H01J27/02; H01J27/16; H01J27/18; H05; H05H; H05H1/00; H05H1/02; H05H1/16; H05H1/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A PLASMA CONFINEMENT DEVICE COMPRISING AN ELONGATED EVACUATED VESSEL INCLUDING TWO CYLINDERS EFFECTIVELY COMMUNICATING WITH EACH OTHER THROUGH A BODY ELECTRICALLY FORMING A RESONANT CIRCUIT AT A PREDETERMINED ULTRAHIGH FREQUENCY, MEANS FOR SEPARATELY INJECTING INTO SAID VESSEL IONS AND ELECTRONS CONSTITUENTS OF SAID PLASMA, MEANS FOR PRODUCING IN SAID VESSEL A SUBSTANTIALLY LONGITUDINAL, TIME-CONSTANT MAGNETIC FIELD WHOSE INTENSITY INCREASES FROM A MINIMUM ESSENTIALLY AT THE MIDDLE OF THE VESSEL TO A MAXIMUM VALUE NEAR THE ENDS THEREOF, AND MEANS FOR PRODUCING IN SAID CIRCUIT ULTRA-HIGH FREQUENCY ELECTROMAGNETIC OSCILLATIONS OF SUBSTANTIALLY SAID PREDETERMINED FREQUENCY, THE SAID MINIMUM MAGNETIC FIELD INTENSITY BEING SO INTERRELATED WITH THE CHARGE AND THE MASS OF DESIRED PARTICLES WITHIN SAID PLASMA THAT THE CYCLOTRON RESONANCE FREQUENCY OF SAID PARTICLES IS SUBSTANTIALLY EQUAL TO SAID PREDETERMINED FREQUENCY.
Claim 2
Dependent Claim
129 words
A PLASMA CONFINEMENT DEVICE COMPRISING AN ELONGATED EVACUATED VESSEL INCLUDING TWO CYLINDERS EFFECTIVELY COMMUNICATING WITH EACH OTHER THROUGH A BODY ELECTRICALLY FORMING A RESONANT CIRCUIT AT A PREDETERMINED ULTRAHIGH FREQUENCY, MEANS FOR SEPARATELY INJECTING INTO SAID VESSEL IONS AND ELECTRONS CONSTITUENTS OF SAID PLASMA, MEANS FOR PRODUCING IN SAID VESSEL A SUBSTANTIALLY LONGITUDINAL, TIME-CONSTANT MAGNETIC FIELD WHOSE INTENSITY INCREASES FROM A MINIMUM ESSENTIALLY AT THE MIDDLE OF THE VESSEL TO A MAXIMUM VALUE NEAR THE ENDS THEREOF, AND MEANS FOR PRODUCING IN SAID CIRCUIT ULTRA-HIGH FREQUENCY ELECTROMAGNETIC OSCILLATIONS OF SUBSTANTIALLY SAID PREDETERMINED FREQUENCY, THE SAID MINIMUM MAGNETIC FIELD INTENSITY BEING SO INTERRELATED WITH THE CHARGE AND THE MASS OF DESIRED PARTICLES WITHIN SAID PLASMA THAT THE CYCLOTRON RESONANCE FREQUENCY OF SAID PARTICLES IS SUBSTANTIALLY EQUAL TO SAID PREDETERMINED FREQUENCY.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |