US3113010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for forming tubular electric lamps and similar devices
Assignee: General Electric Co
•
Filing: 1958-06-19
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Granted: 1963-12-03
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Expires: 1978-06-19
Abstract
No abstract record available.
Inventors
- 👤 Winfield H Willis
- 👤 Harry L Louden
- 👤 Robert N Malm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:44
CPC Classifications
H; H01; H01K; H01K3/00; H01K3/28; H01J; H01J9/00; H01J9/40
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
180 words
THE METHOD OF MAKING AN ELECTRIC LAMP OR SIMILAR DEVICE OF THE TYPE COMPRISING A TUBULAR GLASS ENVELOPE HAVING LEAD-IN WIRES SEALED INTO AN END THEREOF AND AN EXHAUST TIP AT ITS OTHER END, WHICH METHOD COMPRISES POSITIONING THE LEAD-IN WIRES WITHIN ONE END OF AN OPENENDED GLASS TUBE OF UNIFORM DIAMETER THROUGHOUT IN POSITION FOR SEALING THEREINTO, HEATING TO A PLASTIC STATE AND STRETCHING AN INTERMEDIATE PORTION OF THE LENGTH OF SAID GLASS TUBE TO FORM THE SAID TUBE PORTION INTO AN EXTENDED LONGITUDINALLY FLARING CONSTRICTION, UPSETTING THE FLARING END PORTION OF SAID CONSTRICTED SECTION NEAREST THE SAID ONE END OF THE TUBE, WHILE THE GLASS THEREOF IS IN A PLASTIC CONDITION, INTO A SUBSTANTIALLY CYLINDRICAL SHAPED SECTION APPROXIMATELY CORRESPONDING IN SIZE TO THE DIAMETER OF THE SMALLEST DIAMETER MID-PORTION OF SAID CONSTRICTION AND TERMINATING IN A SHORT SHOULDER ON THE TUBE, SEALING THE SAID LEAD-IN WIRES INTO THE SAID ONE END OF THE GLASS TUBE, AND THEN EVACUATING THE GLASS TUBE THROUGH ITS OPEN OTHER END AND TIPPING-OFF THE CONSTRICTED SECTION THEREOF CLOSELY ADJACENT THE SAID ROUNDED SHOULDER.
Claim 2
Independent Claim
180 words
THE METHOD OF MAKING AN ELECTRIC LAMP OR SIMILAR DEVICE OF THE TYPE COMPRISING A TUBULAR GLASS ENVELOPE HAVING LEAD-IN WIRES SEALED INTO AN END THEREOF AND AN EXHAUST TIP AT ITS OTHER END, WHICH METHOD COMPRISES POSITIONING THE LEAD-IN WIRES WITHIN ONE END OF AN OPENENDED GLASS TUBE OF UNIFORM DIAMETER THROUGHOUT IN POSITION FOR SEALING THEREINTO, HEATING TO A PLASTIC STATE AND STRETCHING AN INTERMEDIATE PORTION OF THE LENGTH OF SAID GLASS TUBE TO FORM THE SAID TUBE PORTION INTO AN EXTENDED LONGITUDINALLY FLARING CONSTRICTION, UPSETTING THE FLARING END PORTION OF SAID CONSTRICTED SECTION NEAREST THE SAID ONE END OF THE TUBE, WHILE THE GLASS THEREOF IS IN A PLASTIC CONDITION, INTO A SUBSTANTIALLY CYLINDRICAL SHAPED SECTION APPROXIMATELY CORRESPONDING IN SIZE TO THE DIAMETER OF THE SMALLEST DIAMETER MID-PORTION OF SAID CONSTRICTION AND TERMINATING IN A SHORT SHOULDER ON THE TUBE, SEALING THE SAID LEAD-IN WIRES INTO THE SAID ONE END OF THE GLASS TUBE, AND THEN EVACUATING THE GLASS TUBE THROUGH ITS OPEN OTHER END AND TIPPING-OFF THE CONSTRICTED SECTION THEREOF CLOSELY ADJACENT THE SAID ROUNDED SHOULDER.
Claim 3
Dependent Claim
297 words
APPARATUS FOR MAKING TUBULAR ELECTRIC LAMPS OR SIMILAR DEVICES COMPRISING A HEAD HAVING VERTICALLY SPACED UPPER AND LOWER JAWS FOR HOLDING A GLASS TUBE OF UNIFORM DIAMETER THROUGHOUT IN A VERTICAL POSITION AND A HOLDER FOR SUPPORTING LEADING-IN WIRES IN POSITION EXTENDING INTO THE OPEN LOWER END OF THE TUBE HELD IN SAID JAWS FOR SEALING THEREINTO, MEANS FOR HEATING AN INTERMEDIATE PORTION OF THE LENGTH OF SAID GLASS TUBE TO A PLASTIC CONDITION, MEANS FOR EFECTING RELATIVE VERTICAL DISPLACEMENT OF SAID PAIRS OF JAWS TO STRETCH THE PLASTIC INERMEDIATE PORTION OF THE GLASS TUBE AND FORM A FLARING CONSTRICTION THEREIN, A SPLIT MOLD COMPRISING TWO MOLD HALVES LOCATED BETWEEN THE SAID PAIRS OF JAWS IN A NORMAL POSITION TO CLOSE AROUND THE NARROWER MID-PORTION OF THE SAID CONSTRICTION IN THE GLASS TUBE, SUPPORT MEANS INCLUDING SEPARTE SUPPORT ARMS MOUNTING SAID MOLD HALVES FOR UNITARY VERTICAL MOVEMENT AXIALLY OF SAID GLASS TUBE, SPRING MEANS NORMALLY URGING SAID MOLD HALVES TOGETHER TO CLOSE THE SPLIT MOLD AROUND THE GLASS TUBE, AND VERTICALLY RECIPROCABLE ACTUATING MEANS WEDGINGLY ENGAGEABLE ON ITS UPWARD STROKE WITH SAID MOLD SUPPORT ARMS TO SEPARATE THEM AND OPEN THE SPLIT MOLD AND ABUTTINGLY ENGAGEABLE ON ITS DOWNWARD STROKE WITH SAID SUPPORT MEANS TO LOWER IT SO AS TO CAUSE THE MOLD TO CONTRACT AND RESHAPE THE FLARING LOWER PORTION OF SAID CONSTRICTION INTO A REDUCED DIAMETER TUBULAR PORTION AND UPSET THE LOWERMOST END REGION OF SAID FLARING PORTION INTO A SHORT SHOULDER ON THE TUBE, HEATING MEANS MOUNTED ADJACENT SAID LOWER JAWS TO HEAT THE LOWER END OF SAID GLASS TUBE TO A PLASTIC CONDITION, AND A PAIR OF PRESS JAWS MOUNTED ADJACENT SAID TUBE-HOLDING JAWS AND OPERATIVE TO CLOSE AGAINST AND COMPRESS THE PLASTIC LOWER END OF THE GLASS TUBE INTO A STEM PRESS.
Claim 4
Dependent Claim
297 words
APPARATUS FOR MAKING TUBULAR ELECTRIC LAMPS OR SIMILAR DEVICES COMPRISING A HEAD HAVING VERTICALLY SPACED UPPER AND LOWER JAWS FOR HOLDING A GLASS TUBE OF UNIFORM DIAMETER THROUGHOUT IN A VERTICAL POSITION AND A HOLDER FOR SUPPORTING LEADING-IN WIRES IN POSITION EXTENDING INTO THE OPEN LOWER END OF THE TUBE HELD IN SAID JAWS FOR SEALING THEREINTO, MEANS FOR HEATING AN INTERMEDIATE PORTION OF THE LENGTH OF SAID GLASS TUBE TO A PLASTIC CONDITION, MEANS FOR EFECTING RELATIVE VERTICAL DISPLACEMENT OF SAID PAIRS OF JAWS TO STRETCH THE PLASTIC INERMEDIATE PORTION OF THE GLASS TUBE AND FORM A FLARING CONSTRICTION THEREIN, A SPLIT MOLD COMPRISING TWO MOLD HALVES LOCATED BETWEEN THE SAID PAIRS OF JAWS IN A NORMAL POSITION TO CLOSE AROUND THE NARROWER MID-PORTION OF THE SAID CONSTRICTION IN THE GLASS TUBE, SUPPORT MEANS INCLUDING SEPARTE SUPPORT ARMS MOUNTING SAID MOLD HALVES FOR UNITARY VERTICAL MOVEMENT AXIALLY OF SAID GLASS TUBE, SPRING MEANS NORMALLY URGING SAID MOLD HALVES TOGETHER TO CLOSE THE SPLIT MOLD AROUND THE GLASS TUBE, AND VERTICALLY RECIPROCABLE ACTUATING MEANS WEDGINGLY ENGAGEABLE ON ITS UPWARD STROKE WITH SAID MOLD SUPPORT ARMS TO SEPARATE THEM AND OPEN THE SPLIT MOLD AND ABUTTINGLY ENGAGEABLE ON ITS DOWNWARD STROKE WITH SAID SUPPORT MEANS TO LOWER IT SO AS TO CAUSE THE MOLD TO CONTRACT AND RESHAPE THE FLARING LOWER PORTION OF SAID CONSTRICTION INTO A REDUCED DIAMETER TUBULAR PORTION AND UPSET THE LOWERMOST END REGION OF SAID FLARING PORTION INTO A SHORT SHOULDER ON THE TUBE, HEATING MEANS MOUNTED ADJACENT SAID LOWER JAWS TO HEAT THE LOWER END OF SAID GLASS TUBE TO A PLASTIC CONDITION, AND A PAIR OF PRESS JAWS MOUNTED ADJACENT SAID TUBE-HOLDING JAWS AND OPERATIVE TO CLOSE AGAINST AND COMPRESS THE PLASTIC LOWER END OF THE GLASS TUBE INTO A STEM PRESS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-02 | 1967-06-03 | 1967-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-02 | 1971-06-03 | 1971-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-02 | 1975-06-03 | 1975-12-03 | $7700.00 | Window Closed / Lapsed |