US2733348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ion source units
Assignee: —
•
Filing: —
•
Granted: 1956-01-31
•
Expires: 1973-01-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:22
CPC Classifications
H; H01; H01J; H01J49/00; H01J49/26; H01J49/28; H01J49/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
AN ION SOURCE UNIT COMPRISING A HOLLOW ARC BLOCK DEFINING AN ARC CHAMBER AND PROVIDED WITH A WALL CONSTITUTING A PRINCIPAL CATHODE, MEANS INCLUDING AN AUXILIARY CATHODE DISPOSED EXTERIORLY OF SAID ARC BLOCK AND ADJACENT TO SAID PRINCIPAL CATHODE FOR BOMBARDING SAID PRINCIPAL CATHODE IN ORDER TO RENDER THE SAME ELECTRON EMISSIVE, MEANS INCLUDING A PRINCIPAL ANODE DISPOSED IN SAID CHAMBER REMOTE FROM SAID PRINCIPAL CATHODE FOR SUSTAINING AN ARC BETWEEN SAID PRINCIPAL CATHODE AND SAID PRINCIPAL ANODE, MEANS INCLUDING A STARTING ANODE DISPOSED IN SAID CHAMBER ADJACENT TO SAID PRINCIPAL CATHODE FOR STRIKING AN ARC BETWEEN SAID PRINCIPAL CATHODE AND SAID PRINCIPAL ANODE, MEANS FOR SUPPLYING A GAS TO BE IONIZED TO SAID CHAMBER, AND MEANS FOR WITHDRAWING IONS FROM SAID CHAMBER.
Claim 2
Dependent Claim
123 words
AN ION SOURCE UNIT COMPRISING A HOLLOW ARC BLOCK DEFINING AN ARC CHAMBER AND PROVIDED WITH A WALL CONSTITUTING A PRINCIPAL CATHODE, MEANS INCLUDING AN AUXILIARY CATHODE DISPOSED EXTERIORLY OF SAID ARC BLOCK AND ADJACENT TO SAID PRINCIPAL CATHODE FOR BOMBARDING SAID PRINCIPAL CATHODE IN ORDER TO RENDER THE SAME ELECTRON EMISSIVE, MEANS INCLUDING A PRINCIPAL ANODE DISPOSED IN SAID CHAMBER REMOTE FROM SAID PRINCIPAL CATHODE FOR SUSTAINING AN ARC BETWEEN SAID PRINCIPAL CATHODE AND SAID PRINCIPAL ANODE, MEANS INCLUDING A STARTING ANODE DISPOSED IN SAID CHAMBER ADJACENT TO SAID PRINCIPAL CATHODE FOR STRIKING AN ARC BETWEEN SAID PRINCIPAL CATHODE AND SAID PRINCIPAL ANODE, MEANS FOR SUPPLYING A GAS TO BE IONIZED TO SAID CHAMBER, AND MEANS FOR WITHDRAWING IONS FROM SAID CHAMBER.
References Cited (Backward Citations)
US2348814A
Cited
US2427484A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-30 | 1959-08-01 | 1960-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-30 | 1963-08-01 | 1964-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-30 | 1967-08-01 | 1968-01-31 | $7700.00 | Window Closed / Lapsed |