US3112863A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ion pump
Assignee: Consolidated Vacuum Corp
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Filing: 1960-10-06
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Granted: 1963-12-03
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Expires: 1980-10-06
Abstract
No abstract record available.
Inventors
- 👤 Wilson M Brubaker
- 👤 Clifford E Berry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:43
CPC Classifications
H; H01; H01J; H01J41/00; H01J41/12; H01J41/18; H01J41/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
AN ION PUMP OF THE COLD-CATHODE DISCHARGE TYPE COMPRISING AN ANODE, A COLLECTOR HAVING AN IRREGULAR SURFACE EXTENDING TOWARD THE ANODE, MEANS FOR INITIATING A VOLTAGE GRADIENT IN THE SPACE BETWEEN THE ANODE AND THE COLLECTOR AND EXTENDING IN A DIRECTION FROM THE ANODE TOWARD THE COLLECTOR SO AS TO CAUSE IONS TO STRIKE THE IRREGULARITIES IN THE COLLECTOR SURFACE, MEANS FOR ENCLOSING SAID ANODE AND SAID COLLECTOR SO AS TO PROVIDE A SEALED ENCLOSURE DURING PUMPING OPERATIONS, AND MEANS FOR PRODUCING MAGNETIC LINES OF FORCE THROUGH THE ENCLOSURE WHEREIN THE LINES EXTEND IN A DIRECTION FROM SAID ANODE TOWARD SAID COLLECTOR.
Claim 2
Dependent Claim
102 words
AN ION PUMP OF THE COLD-CATHODE DISCHARGE TYPE COMPRISING AN ANODE, A COLLECTOR HAVING AN IRREGULAR SURFACE EXTENDING TOWARD THE ANODE, MEANS FOR INITIATING A VOLTAGE GRADIENT IN THE SPACE BETWEEN THE ANODE AND THE COLLECTOR AND EXTENDING IN A DIRECTION FROM THE ANODE TOWARD THE COLLECTOR SO AS TO CAUSE IONS TO STRIKE THE IRREGULARITIES IN THE COLLECTOR SURFACE, MEANS FOR ENCLOSING SAID ANODE AND SAID COLLECTOR SO AS TO PROVIDE A SEALED ENCLOSURE DURING PUMPING OPERATIONS, AND MEANS FOR PRODUCING MAGNETIC LINES OF FORCE THROUGH THE ENCLOSURE WHEREIN THE LINES EXTEND IN A DIRECTION FROM SAID ANODE TOWARD SAID COLLECTOR.
References Cited (Backward Citations)
US2636664A
Cited
GB797232A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-02 | 1967-06-03 | 1967-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-02 | 1971-06-03 | 1971-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-02 | 1975-06-03 | 1975-12-03 | $7700.00 | Window Closed / Lapsed |