US3217973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual surface ionic pump with shielded anode support
Assignee: Raytheon Co
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Filing: 1962-11-23
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Granted: 1965-11-16
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Expires: 1982-11-23
Abstract
No abstract record available.
Inventors
- 👤 Knauer Wolfgang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:35
CPC Classifications
H; H01; H01J; H01J41/00; H01J41/12; H01J41/18; H01J41/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
AN IONIC PUMP COMPRISING AN ENVELOPE ADAPTED TO BE CONNECTED TO APPARATUS TO BE EVACUATED, MEANS FOR ESTABLISHING A MAGNETIC FIELD WITHIN SAID ENVELOPE, AN ANODE MEMBER WITHIN SAID ENVELOPE AND HAVING AT LEAST TWO MAJOR SURFACES PARALLEL TO SAID MAGNETIC FIELD, REACTIVE CATHODE MEANS DISPOSED IN SAID ENVELOPE AT AN ANGLE WITH RESPECT TO SAID MAJOR SURFACES, CONNECTION MEANS FOR SAID ANODE MEMBER SECURED TO SAID ANODE MEMBER AT ONE OF SAID MAJOR SURFACES, AND A SHIELD FOR SAID CONNECTION MEANS ADAPTED TO BE MAINTAINED AT THE POTENTIAL OF SAID CATHODE MEANS.
Claim 2
Dependent Claim
93 words
AN IONIC PUMP COMPRISING AN ENVELOPE ADAPTED TO BE CONNECTED TO APPARATUS TO BE EVACUATED, MEANS FOR ESTABLISHING A MAGNETIC FIELD WITHIN SAID ENVELOPE, AN ANODE MEMBER WITHIN SAID ENVELOPE AND HAVING AT LEAST TWO MAJOR SURFACES PARALLEL TO SAID MAGNETIC FIELD, REACTIVE CATHODE MEANS DISPOSED IN SAID ENVELOPE AT AN ANGLE WITH RESPECT TO SAID MAJOR SURFACES, CONNECTION MEANS FOR SAID ANODE MEMBER SECURED TO SAID ANODE MEMBER AT ONE OF SAID MAJOR SURFACES, AND A SHIELD FOR SAID CONNECTION MEANS ADAPTED TO BE MAINTAINED AT THE POTENTIAL OF SAID CATHODE MEANS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |