US3241490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and device for pumping a gas
Assignee: Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
•
Filing: 1962-06-26
•
Granted: 1966-03-22
•
Expires: 1982-06-26
Abstract
No abstract record available.
Inventors
- 👤 Ricateau Pierre
- 👤 Vavasseur Camille
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:09
CPC Classifications
H; H02; H02K; H02K44/00; H02K44/02; H02K44/04; H01; H01J; H01J41/00; H01J41/12; H01J41/18; H01J41/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
IN A METHOD OF PUMPING GASES THROUGH A PROPULSION ZONE IN A GIVEN DIRECTION BY MEANS OF THE COMBINED ACTION OF A PARMANENT MAGNETIC FIELD AND A PERMANENT ELECTRIC FIELD THE DIRECTIONS OF WHICH ARE AT RIGHT ANGLES TO EACH OTHER AND AT RIGHT ANGLES TO THE DIRECTION OF PROPULSION OF THE GAS, THE STEP OF IONIZING A PORTION OF THE GAS ADJACENT THE INPUT END OF THE PROPULSION ZONE AT A REPETITION RATE SUCH THAT ELECTRIC ARCS ARE CREATED APPROXIMATELY AT THE TIME THE PRECEDING ARC LEAVES THE PROPULSION ZONE AND WHICH ARE ORIENTED IN THE DIRECTION OF THE ELECTRIC FIELD AND THEN MOVING THE ELECTRIC ARCS IN THE DIRECTION OF PROPULSION OF THE GAS BY THE ACTION OF SAID FIELDS.
Claim 2
Dependent Claim
122 words
IN A METHOD OF PUMPING GASES THROUGH A PROPULSION ZONE IN A GIVEN DIRECTION BY MEANS OF THE COMBINED ACTION OF A PARMANENT MAGNETIC FIELD AND A PERMANENT ELECTRIC FIELD THE DIRECTIONS OF WHICH ARE AT RIGHT ANGLES TO EACH OTHER AND AT RIGHT ANGLES TO THE DIRECTION OF PROPULSION OF THE GAS, THE STEP OF IONIZING A PORTION OF THE GAS ADJACENT THE INPUT END OF THE PROPULSION ZONE AT A REPETITION RATE SUCH THAT ELECTRIC ARCS ARE CREATED APPROXIMATELY AT THE TIME THE PRECEDING ARC LEAVES THE PROPULSION ZONE AND WHICH ARE ORIENTED IN THE DIRECTION OF THE ELECTRIC FIELD AND THEN MOVING THE ELECTRIC ARCS IN THE DIRECTION OF PROPULSION OF THE GAS BY THE ACTION OF SAID FIELDS.
References Cited (Backward Citations)
US2228846A
Cited
US2936390A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |