Patent US3337764A successfully refreshed from Google Patents.
US3337764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cool discharge tubes of hollow ring-like construction
Assignee: Teledyne UK Ltd
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Filing: 1964-04-15
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Granted: 1967-08-22
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Expires: 1984-04-15
Abstract
No abstract record available.
Inventors
- 👤 Menown Hugh
- 👤 Lake Ronald Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:02
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/02; H01J17/28; H01J17/16; H01J17/50; H01J17/52; H01J17/54; H01J17/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
A DISCHARGE TUBE HAVING A HERMETICALLY SEALED ENVELOPE WHICH COMPRISES AN INNER SUBSTANTIALLY CYLINDRICAL COMPOSITE WALL HAVING AT LEAST ONE PART OF ITS LENGTH MADE OF METAL AND A REMAINING PART OF ITS LENGTH MADE OF INSULATING MATERIAL, SAID WALL CONSTITUTING THE WALL OF A SUBSTANTIALLY CYLINDRICAL COOLANT CONDUIT PASSING AXIALLY THROUGH THE TUBE, THE REMAINING WALLS OF THE ENVELOPE BEING OUTWARDLY OF AND EXTENDING AROUND SAID INNER WALL TO PROVIDE A HERMETICALLY SEALED ENVELOPE SPACED ENCIRCLING SAID CONDUIT, THE ELECTRODES OF THE TUBE INCLUDING AT LEAST ONE ELECTRODE OF HIGH HEAT LOADING AND WHICH IS IN GOOD HEAT CONDUCTING RELATIONSHIP WITH SAID METAL LENGTH, SAID ONE ELECTRODE INCLUDING AN INNER PORTION WHICH IS HOLLOW RING-LIKE CONSTRUCTION SUBSTANTIALLY ENCLOSING AN ANULAR CAVITY THEREIN AND HAVING ITS INNERMOST WALL CONSTITUTED BY SAID METAL LENGTH.
Claim 2
Dependent Claim
133 words
A DISCHARGE TUBE HAVING A HERMETICALLY SEALED ENVELOPE WHICH COMPRISES AN INNER SUBSTANTIALLY CYLINDRICAL COMPOSITE WALL HAVING AT LEAST ONE PART OF ITS LENGTH MADE OF METAL AND A REMAINING PART OF ITS LENGTH MADE OF INSULATING MATERIAL, SAID WALL CONSTITUTING THE WALL OF A SUBSTANTIALLY CYLINDRICAL COOLANT CONDUIT PASSING AXIALLY THROUGH THE TUBE, THE REMAINING WALLS OF THE ENVELOPE BEING OUTWARDLY OF AND EXTENDING AROUND SAID INNER WALL TO PROVIDE A HERMETICALLY SEALED ENVELOPE SPACED ENCIRCLING SAID CONDUIT, THE ELECTRODES OF THE TUBE INCLUDING AT LEAST ONE ELECTRODE OF HIGH HEAT LOADING AND WHICH IS IN GOOD HEAT CONDUCTING RELATIONSHIP WITH SAID METAL LENGTH, SAID ONE ELECTRODE INCLUDING AN INNER PORTION WHICH IS HOLLOW RING-LIKE CONSTRUCTION SUBSTANTIALLY ENCLOSING AN ANULAR CAVITY THEREIN AND HAVING ITS INNERMOST WALL CONSTITUTED BY SAID METAL LENGTH.
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) | 1970-08-21 | 1971-02-20 | 1971-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-21 | 1975-02-20 | 1975-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-21 | 1979-02-20 | 1979-08-22 | $7700.00 | Window Closed / Lapsed |