US3170081A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Discharge lamp electrode
Assignee: Westinghouse Electric Corp
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Filing: 1962-06-05
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Granted: 1965-02-16
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Expires: 1982-06-05
Abstract
No abstract record available.
Inventors
- 👤 Rokosz Ferdinand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:18
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/04; H01J61/06; H01J61/073; H01J61/0732
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
AN ELECTRODE FOR AN ELECTRIC DISCHARGE LAMP OR THE LIKE COMPRISING, A SUPPORT ROD, A LOOSE FITTING INNER COIL OF REFRACTORY METAL WIRE ON SAID SUPPORT ROD, AND A LOOSE FITTING OUTER COIL OF REFRACTORY METAL WIRE OVER AND ENCLOSING SAID INNER COIL, SAID INNER COIL HAVING A TRANSVERSELY PROTRUDING LEG AT ONE END AND AT LEAST ONE TURN THAT IS ANCHORED TO SAID ROD AND THUS LOCKS SAID INNER COIL IN PREDETERMINED POSITION ON SAID ROD, AND THE END TURN OF SAID OUTER COIL PROXIMATE THE PROTRUDING LEG OF SAID INNER COIL BEING SEATED AGAINST SAID LEG AND HAVING A DEFORMED PORTION THAT PROTRUDES INWARDLY TOWARD SAID ROD AND INTERLOCKINGLY ENGAGES THE PROXIMATE END FACE OF SAID INNER COIL.
Claim 2
Dependent Claim
120 words
AN ELECTRODE FOR AN ELECTRIC DISCHARGE LAMP OR THE LIKE COMPRISING, A SUPPORT ROD, A LOOSE FITTING INNER COIL OF REFRACTORY METAL WIRE ON SAID SUPPORT ROD, AND A LOOSE FITTING OUTER COIL OF REFRACTORY METAL WIRE OVER AND ENCLOSING SAID INNER COIL, SAID INNER COIL HAVING A TRANSVERSELY PROTRUDING LEG AT ONE END AND AT LEAST ONE TURN THAT IS ANCHORED TO SAID ROD AND THUS LOCKS SAID INNER COIL IN PREDETERMINED POSITION ON SAID ROD, AND THE END TURN OF SAID OUTER COIL PROXIMATE THE PROTRUDING LEG OF SAID INNER COIL BEING SEATED AGAINST SAID LEG AND HAVING A DEFORMED PORTION THAT PROTRUDES INWARDLY TOWARD SAID ROD AND INTERLOCKINGLY ENGAGES THE PROXIMATE END FACE OF SAID INNER COIL.
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) | 1968-02-16 | 1968-08-17 | 1969-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-16 | 1972-08-17 | 1973-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-16 | 1976-08-17 | 1977-02-16 | $7700.00 | Window Closed / Lapsed |