Patent US3189778A successfully refreshed from Google Patents.
US3189778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lamp filament connection
Assignee: Westinghouse Electric Corp
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Filing: 1962-01-29
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Granted: 1965-06-15
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Expires: 1982-01-29
Abstract
No abstract record available.
Inventors
- 👤 William L Brundige
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:28
CPC Classifications
H; H01; H01K; H01K1/00; H01K1/02; H01K1/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
IN AN ELECTRIC INCANDESCENT LAMP, THE COMBINATION OF A REFRACTORY WIRE FILAMENT HAVING A COILED END SECTION, AND A LEAD-IN CONDUCTOR THAT IS SMALLER IN DIAMETER THAN THE INSIDE DIAMETER OF SAID COILED END SECTION AND HAS OF FLAT THAT IS LOCATED PROXIMATE BUT INWARD FROM ONE OF SAID CONDUCTOR AND FITS FREELY WITHIN SAID COILED END SECTION, THE ROUNDED CONTOUR OF SAID LEAD-IN CONDUCTOR BEING ABRUPTLY ALTERED BY SAID FLAT THEREBY PROVIDING AN ELONGATED RECESS THAT IS TERMINATED AT EACH END BY A TRANSVERSELY-EXTENDING SHARPLY-DEFINED SHOULDER, SAID FLAT BEING LOCATED WITHIN AN INTERMEDIATE PORTION OF SAID COILED END SECTION AND OF SUFFICIENT LENGTH TO ACCOMMODATE MORE THAN ONE TURN OF SAID COILED END SECTION, THE TURNS OF SAID COILED END SECTION OVERLYING SAID FLAT BEING COLLAPSED INTO RECESS AND SEATED BETWEEN SAID SHOULDERS THEREBY LOCKING SAID CONDUCTOR IN MECHANICAL AND POSITIVE ELECTRICAL ENGAGEMENT WITH SAID FILAMENT.
Claim 2
Dependent Claim
147 words
IN AN ELECTRIC INCANDESCENT LAMP, THE COMBINATION OF A REFRACTORY WIRE FILAMENT HAVING A COILED END SECTION, AND A LEAD-IN CONDUCTOR THAT IS SMALLER IN DIAMETER THAN THE INSIDE DIAMETER OF SAID COILED END SECTION AND HAS OF FLAT THAT IS LOCATED PROXIMATE BUT INWARD FROM ONE OF SAID CONDUCTOR AND FITS FREELY WITHIN SAID COILED END SECTION, THE ROUNDED CONTOUR OF SAID LEAD-IN CONDUCTOR BEING ABRUPTLY ALTERED BY SAID FLAT THEREBY PROVIDING AN ELONGATED RECESS THAT IS TERMINATED AT EACH END BY A TRANSVERSELY-EXTENDING SHARPLY-DEFINED SHOULDER, SAID FLAT BEING LOCATED WITHIN AN INTERMEDIATE PORTION OF SAID COILED END SECTION AND OF SUFFICIENT LENGTH TO ACCOMMODATE MORE THAN ONE TURN OF SAID COILED END SECTION, THE TURNS OF SAID COILED END SECTION OVERLYING SAID FLAT BEING COLLAPSED INTO RECESS AND SEATED BETWEEN SAID SHOULDERS THEREBY LOCKING SAID CONDUCTOR IN MECHANICAL AND POSITIVE ELECTRICAL ENGAGEMENT WITH SAID FILAMENT.
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) | 1968-06-14 | 1968-12-14 | 1969-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-14 | 1972-12-14 | 1973-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-14 | 1976-12-14 | 1977-06-15 | $7700.00 | Window Closed / Lapsed |