US3316049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Incandescent electric lamps
Assignee: Individual
•
Filing: 1965-01-29
•
Granted: 1967-04-25
•
Expires: 1985-01-29
Abstract
No abstract record available.
Inventors
- 👤 Brown Herbert William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:22
CPC Classifications
H; H01; H01K; H01K1/00; H01K1/42; H01K1/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
200 words
A METHOD OF MANUFACTURE OF AN INCANDESCENT ELECTRIC LAMP WITHOUT THE AID OF AN EXHAUST TUBE, CONSISTING ESSENTIALLY OF THE STEPS OF CLAMPING A PAIR OF LEAD-IN WIRES HAVING PRONGS AT THEIR OTHER ENDS, ATTACHING A FILAMENT TO THE OPPOSITE ENDS OF SAID LEAD-IN WIRES, LOCATING A GLASS BULB OVER SAID FILAMENT AND LEAD-IN WIRES THE NECK OF WHICH BULB HAS BEEN SOFTENED BY HEATING, PINCHING THE NECK TO FORM A GAS-TIGHT SEAL AROUND THE INNER END OF EACH OF SAID PRONGS AND THE PORTION OF LEAD-IN WIRE CONNECTED THERETO AND SIMULTANEOUSLY FORMING AN APERTURE IN THE PINCHED BASE MASS OF GLASS, SAID APERTURE TAPERING INWARDS, LOCATING A MASS OF FUSIBLE SUBSTANCE IN SAID APERTURE SO AS TO PERMIT THE PASSAGE OF GAS THROUGH SAID APERTURE, LOCATING A PLURALITY OF SUCH LAMPS IN A CHAMBER WITH THEIR PRONGS UPPERMOST, HEATING THE CHAMBER TO A SUITABLE TEMPERATURE, EVACUATING THE CHAMBER, ADMITTING AN INERT GAS TO THE CHAMBER AT THE DESIRED PRESSURE SO AS TO FILL EACH BULB PRIOR TO THE SEALING THEREOF, AND RAISING THE TEMPERATURE OF THE CHAMBER AT LEAST IN THE REGION OF THE PINCHED BASE OF EACH BULB TO SOFTEN SAID FUSIBLE MASS AND THEREBY SEAL SAID APERTURE.
Claim 2
Independent Claim
200 words
A METHOD OF MANUFACTURE OF AN INCANDESCENT ELECTRIC LAMP WITHOUT THE AID OF AN EXHAUST TUBE, CONSISTING ESSENTIALLY OF THE STEPS OF CLAMPING A PAIR OF LEAD-IN WIRES HAVING PRONGS AT THEIR OTHER ENDS, ATTACHING A FILAMENT TO THE OPPOSITE ENDS OF SAID LEAD-IN WIRES, LOCATING A GLASS BULB OVER SAID FILAMENT AND LEAD-IN WIRES THE NECK OF WHICH BULB HAS BEEN SOFTENED BY HEATING, PINCHING THE NECK TO FORM A GAS-TIGHT SEAL AROUND THE INNER END OF EACH OF SAID PRONGS AND THE PORTION OF LEAD-IN WIRE CONNECTED THERETO AND SIMULTANEOUSLY FORMING AN APERTURE IN THE PINCHED BASE MASS OF GLASS, SAID APERTURE TAPERING INWARDS, LOCATING A MASS OF FUSIBLE SUBSTANCE IN SAID APERTURE SO AS TO PERMIT THE PASSAGE OF GAS THROUGH SAID APERTURE, LOCATING A PLURALITY OF SUCH LAMPS IN A CHAMBER WITH THEIR PRONGS UPPERMOST, HEATING THE CHAMBER TO A SUITABLE TEMPERATURE, EVACUATING THE CHAMBER, ADMITTING AN INERT GAS TO THE CHAMBER AT THE DESIRED PRESSURE SO AS TO FILL EACH BULB PRIOR TO THE SEALING THEREOF, AND RAISING THE TEMPERATURE OF THE CHAMBER AT LEAST IN THE REGION OF THE PINCHED BASE OF EACH BULB TO SOFTEN SAID FUSIBLE MASS AND THEREBY SEAL SAID APERTURE.
References Cited (Backward Citations)
US1491436A
Cited
US1816424A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-24 | 1970-10-24 | 1971-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-24 | 1974-10-24 | 1975-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-24 | 1978-10-24 | 1979-04-25 | $7700.00 | Window Closed / Lapsed |