Patent US3333138A successfully refreshed from Google Patents.
US3333138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Support assembly for a low-wattage cathode
Assignee: Rauland Borg Corp
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Filing: 1965-01-11
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Granted: 1967-07-25
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Expires: 1985-01-11
Abstract
No abstract record available.
Inventors
- 👤 Constantin S Szegho
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:21
CPC Classifications
H; H01; H01J; H01J1/00; H01J1/02; H01J1/13; H01J1/20; H01J29/00; H01J29/02; H01J29/04; H01J29/46; H01J29/82
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
171 words
IN AN ELECTRON DISCHARGE DEVICE, A LOW-WATTAGE CATHODE ASSEMBLY COMPRISING: A HOLLOW METALLIC CYLINDRICAL CATHODE SLEEVE MEMBER HAVING A LOWER END PORTION AND AN UPPER END TERMINATING IN A METALLIC CAP PORTION; ELECTRON EMISSIVE MATERIAL ON SAID CAP PORTION; A HOLLOW METALLIC CYLINDRICAL CATHODE HEAT SHIELD, HAVING UPPER AND LOWER OPEN END PORTIONS, DISPOSED COAXIALLY WITH SAID SLEEVE MEMBER AND SPACED THEREFROM; AND MEANS FOR MOUNTING SAID SLEEVE MEMBER WITHIN SAID HEAT SHIELD CONSISTING ESSENTIALLY OF A PLURALITY OF SUBSTANTIALLY RIGID SUPPORT MEMBERS OF LOW THERMAL CONDUCTANCE EACH HAVING ONE END FIXED TO SAID LOWER END PORTION OF SAID SLEEVE MEMBER AND ANOTHER END FIXED TO ONE OF SAID END PORTIONS OF SAID SHIELD, AND SAID SUPPORT MEMBERS EACH HAVING AN INTERMEDIATE SECTION LONGER THAN THE DISTANCE BETWEEN SAID LOWER END PORTION OF SAID SLEEVE MEMBER AND SAID UPPER END PORTION OF SAID SHIELD, SAID INTERMEDIATE SECTIONS OF SAID SUPPORT MEMBERS BEING SPACED FROM SAID SLEEVE MEMBER AND FROM SAID SHIELD AND AT LEAST PARTIALLY EXTENDING THROUGH THE ANNULAR SPACE THEREBETWEEN.
Claim 2
Dependent Claim
171 words
IN AN ELECTRON DISCHARGE DEVICE, A LOW-WATTAGE CATHODE ASSEMBLY COMPRISING: A HOLLOW METALLIC CYLINDRICAL CATHODE SLEEVE MEMBER HAVING A LOWER END PORTION AND AN UPPER END TERMINATING IN A METALLIC CAP PORTION; ELECTRON EMISSIVE MATERIAL ON SAID CAP PORTION; A HOLLOW METALLIC CYLINDRICAL CATHODE HEAT SHIELD, HAVING UPPER AND LOWER OPEN END PORTIONS, DISPOSED COAXIALLY WITH SAID SLEEVE MEMBER AND SPACED THEREFROM; AND MEANS FOR MOUNTING SAID SLEEVE MEMBER WITHIN SAID HEAT SHIELD CONSISTING ESSENTIALLY OF A PLURALITY OF SUBSTANTIALLY RIGID SUPPORT MEMBERS OF LOW THERMAL CONDUCTANCE EACH HAVING ONE END FIXED TO SAID LOWER END PORTION OF SAID SLEEVE MEMBER AND ANOTHER END FIXED TO ONE OF SAID END PORTIONS OF SAID SHIELD, AND SAID SUPPORT MEMBERS EACH HAVING AN INTERMEDIATE SECTION LONGER THAN THE DISTANCE BETWEEN SAID LOWER END PORTION OF SAID SLEEVE MEMBER AND SAID UPPER END PORTION OF SAID SHIELD, SAID INTERMEDIATE SECTIONS OF SAID SUPPORT MEMBERS BEING SPACED FROM SAID SLEEVE MEMBER AND FROM SAID SHIELD AND AT LEAST PARTIALLY EXTENDING THROUGH THE ANNULAR SPACE THEREBETWEEN.
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) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |