US3305696A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Negative ion source having gas nozzle integral with the cathode
Assignee: Electro Optical Systems Inc
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Filing: 1965-10-24
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Granted: 1967-02-21
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Expires: 1985-10-24
Abstract
No abstract record available.
Inventors
- 👤 Wallace D Kilpatrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:18
CPC Classifications
H; H01; H01J; H01J27/00; H01J27/02; H01J27/028
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
AN IMPROVED NEGATIVE ION SOURCE COMPRISING: (A) AN ANODE, (B) A CATHODE SPACED FROM SAID ANODE, SAID CATHODE HAVING A NEGATIVE POTENTIAL RELATIVE TO SAID ANODE, WHEREBY AN ARC DISCHARGE IS CREATED THEREBETWEEN. (C) MEANS FOR INJECTING AN IONIZABLE GAS STREAM AT A FIRST PRESSURE IN THE VICINITY OF SAID CATHODE AND FOR REDUCING THE PRESSURE TO A LOWER SECOND PRESSURE AT AN AREA IN THE DISCHARGE REGION INTERMEDIATE SAID CATHODE AND SAID ANODE, WHEREBY SAID GAS IS IONIZED, (D) MEANS FOR ESTABLISHING A MAGNETIC FIELD AXIAL TO SAID ARC DISCHARGE TO CONSTRAIN SAID IONIZED GAS IN SAID DISCHARGE REGION, AND, (E) MEANS FOR REMOVING NEGATIVE IONS FROM SAID IOIZED GAS AT SAID AREA OF SAID SECOND PRESSURE IN A DIRECTION NORMAL TO SAID MAGNETIC FIELD.
Claim 2
Dependent Claim
126 words
AN IMPROVED NEGATIVE ION SOURCE COMPRISING: (A) AN ANODE, (B) A CATHODE SPACED FROM SAID ANODE, SAID CATHODE HAVING A NEGATIVE POTENTIAL RELATIVE TO SAID ANODE, WHEREBY AN ARC DISCHARGE IS CREATED THEREBETWEEN. (C) MEANS FOR INJECTING AN IONIZABLE GAS STREAM AT A FIRST PRESSURE IN THE VICINITY OF SAID CATHODE AND FOR REDUCING THE PRESSURE TO A LOWER SECOND PRESSURE AT AN AREA IN THE DISCHARGE REGION INTERMEDIATE SAID CATHODE AND SAID ANODE, WHEREBY SAID GAS IS IONIZED, (D) MEANS FOR ESTABLISHING A MAGNETIC FIELD AXIAL TO SAID ARC DISCHARGE TO CONSTRAIN SAID IONIZED GAS IN SAID DISCHARGE REGION, AND, (E) MEANS FOR REMOVING NEGATIVE IONS FROM SAID IOIZED GAS AT SAID AREA OF SAID SECOND PRESSURE IN A DIRECTION NORMAL TO SAID MAGNETIC FIELD.
References Cited (Backward Citations)
US2499289A
Cited
US3075115A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |