US3204860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-vacuum pump
Assignee: Thales SA
•
Filing: 1959-03-30
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Granted: 1965-09-07
•
Expires: 1979-03-30
Abstract
No abstract record available.
Inventors
- 👤 Huber Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:16
CPC Classifications
H; H01; H01J; H01J41/00; H01J41/12; H01J41/14; H01J41/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A HIGH-VACUUM PUMP OF THE ADSORBING-AND-IONIZING TYPE, COMPRISING AN ENVELOPE, MEANS FOR COOLING THE WALLS OF SAID ENVELOPE, AND AN ELECTRODE SYTEM WITHIN SAID ENVELOPE, SAID SYSTEM INCLUDING AT LEAST A CATHODE ELECTRODE AND AN ANODE ELECTRODE, ONE OF SAID CATHODE AND ANODE ELECTRODES BEING MADE, AT LEAST IN PART, OF A GETTERING METAL, MEANS FOR HEATING SAID ONE ELECTRODE TO EVAPORATE SAID GETTERING METAL, AND SUPPLY MEANS FOR SAID CATHODE AND ANODE ELECTRODES TO PRODUCE BY THE ELECTRONS EMITTED FROM SAID CATHODE ELECTRODE A DETACTABLE IONIZATION OF RESIDUAL GAS MOLECULES WITHIN SAID ENVELOPE.
Claim 2
Dependent Claim
94 words
A HIGH-VACUUM PUMP OF THE ADSORBING-AND-IONIZING TYPE, COMPRISING AN ENVELOPE, MEANS FOR COOLING THE WALLS OF SAID ENVELOPE, AND AN ELECTRODE SYTEM WITHIN SAID ENVELOPE, SAID SYSTEM INCLUDING AT LEAST A CATHODE ELECTRODE AND AN ANODE ELECTRODE, ONE OF SAID CATHODE AND ANODE ELECTRODES BEING MADE, AT LEAST IN PART, OF A GETTERING METAL, MEANS FOR HEATING SAID ONE ELECTRODE TO EVAPORATE SAID GETTERING METAL, AND SUPPLY MEANS FOR SAID CATHODE AND ANODE ELECTRODES TO PRODUCE BY THE ELECTRONS EMITTED FROM SAID CATHODE ELECTRODE A DETACTABLE IONIZATION OF RESIDUAL GAS MOLECULES WITHIN SAID ENVELOPE.
References Cited (Backward Citations)
US2925214A
Cited
GB797232A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |