US3147910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum pump apparatus
Assignee: Varian Medical Systems Inc
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Filing: 1961-08-30
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Granted: 1964-09-08
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Expires: 1981-08-30
Abstract
No abstract record available.
Inventors
- 👤 Robert L Jepsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:52
CPC Classifications
H; H01; H01J; H01J41/00; H01J41/12; H01J41/18; H01J41/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
AN ELECTRICAL SPUTTER-ION PUMP APPARATUS COMPRISING AN ANODE ELECTRODE, AN ACTIVE METAL CATHODE ELECTRODE, MEANS FOR PRODUCING AND DIRECTING A MAGNETIC FIELD BETWEEN SAID ELECTRODES, A VACUUM COMPARTMENT ENCLOSING SAID ELECTRODES, SAID VACUUM COMPARTMENT BEING ADAPTED TO CONNECT TO A VACUUM SYSTEM, SAID ANODE AND CATHODE ELECTRODES ADAPTED TO MAINTAIN A GAS DISCHARGE UPON ENERGIZATION OF SAID ANODE ELECTRODE, SAID CATHODE ELECTRODE HAVING PORES WHICH PERMIT THE FREE DIFFUSION OF HYDROGEN MOLECULE INTO SAID CATHODE ELECTRODE, AND WHEREIN THE PORES IN SAID CATHODE ELECTRODE HAVE A SMALLEST DIMENSION LESS THAN .2 MILLIMETERS THEREBY PROVIDING A CATHODE ELECTRODE WHICH EXHIBITS AN EXTREMELY HIGH HYDROGEN MOLECULAR ABSORPTION RATE.
Claim 2
Dependent Claim
106 words
AN ELECTRICAL SPUTTER-ION PUMP APPARATUS COMPRISING AN ANODE ELECTRODE, AN ACTIVE METAL CATHODE ELECTRODE, MEANS FOR PRODUCING AND DIRECTING A MAGNETIC FIELD BETWEEN SAID ELECTRODES, A VACUUM COMPARTMENT ENCLOSING SAID ELECTRODES, SAID VACUUM COMPARTMENT BEING ADAPTED TO CONNECT TO A VACUUM SYSTEM, SAID ANODE AND CATHODE ELECTRODES ADAPTED TO MAINTAIN A GAS DISCHARGE UPON ENERGIZATION OF SAID ANODE ELECTRODE, SAID CATHODE ELECTRODE HAVING PORES WHICH PERMIT THE FREE DIFFUSION OF HYDROGEN MOLECULE INTO SAID CATHODE ELECTRODE, AND WHEREIN THE PORES IN SAID CATHODE ELECTRODE HAVE A SMALLEST DIMENSION LESS THAN .2 MILLIMETERS THEREBY PROVIDING A CATHODE ELECTRODE WHICH EXHIBITS AN EXTREMELY HIGH HYDROGEN MOLECULAR ABSORPTION RATE.
References Cited (Backward Citations)
US2755014A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-08 | 1968-03-09 | 1968-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-08 | 1972-03-09 | 1972-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-08 | 1976-03-09 | 1976-09-08 | $7700.00 | Window Closed / Lapsed |