Photographic flashbulb manufacturing
Abstract
Abstract A METHOD AND APPARATUS FOR PROCESSING FLASHBULBS INCLUDING A PNEUMATIC TUBE FOR INJCTING SAID BULBS, TIP FIRST, INTO A VAT OF TRICHLOROETHYLENE SO AS TO DISTRIBUTE ZIRCONIUM FOIL THROUGHOUT THE BULB AND TO CLEAN SAID BULBS. A BARRIER IS PROVIDED AT ONE END OF THE VAT REMOTE FROM THE IMPACT AREA, SAID BARRIER HAVING SLOTS FORMED THEREIN. A PUMP IS PROVIDED TO SET UP A CURRENT IN THE TRICHLORO- ETHYLENE FOR CARRYING THE BULBS, WHICH FLOAT DOWNSTREAM IN THE TRICHLOROETHYLENE, FROM THE IMPACE AREA TO THE BARRIER AREA OF SAID VAT. EACH SLOT IN SAID BARRIER IS SLIGHTLY WIDER THAN ONE WIRE OF THE TWO-WIRE CONTACT LEADS OF EACH BULB, AND IS LOCATED BELOW THE SURFACEOF THE TRICHLOROETHYLENE, AND BELOW THE GLASS PORTION OF THE BULBS, AT THE LEVEL OF THE WIRE CONTACT LEADS, SO THAT THE WIRES CAN ONLY FIT INTO THE SLOT IN SUCH A MANNER THAT THEY ARE ROTATIONALLY ORIENTED ABOUT THEIR LONGITUDINAL AXIS.
Inventors
- 👤 Jack G Barben
- 👤 Ernest J Gallo
- 👤 Charles W Johnson
- 👤 William B Tyndale
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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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) | 1974-03-08 | 1974-09-07 | 1975-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-08 | 1978-09-07 | 1979-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-08 | 1982-09-07 | 1983-03-09 | $7700.00 | Window Closed / Lapsed |