US3248191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Feeder for melting glass spheres for fiber drawing
Assignee: Owens Corning
•
Filing: 1965-03-04
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Granted: 1966-04-26
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Expires: 1985-03-04
Abstract
No abstract record available.
Inventors
- 👤 Sheldon A Canfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:31
CPC Classifications
C; C03; C03B; C03B37/00; C03B37/08; C03B37/085; Y; Y02; Y02P; Y02P40/00; Y02P40/50; Y02P40/57; Y10; Y10S; Y10S65/00; Y10S65/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
81 words
A FEEDER FOR SUPPLYING MOLTEN MINERAL MATERIAL IN FIBER FORMING CONDITION COMPRISING: AN ELONGATED ENCLOSED CHAMBER HAVING A TOP WALL WITH OPENINGS THEREIN FOR RECEIVING COLD, SPHERICAL BODIES OF SAID MINERAL MATERIAL, A BOTTOM WALL WITH A PLURALITY OF OPENINGS THEREIN THROUGH WHICH SAID MOLTEN MINERAL MATERIAL IS SUPPLIED AS A PLURALITY OF STREAMS, TERMINALS CONNECTED TO THE END WALLS OF SAID FEEDER FOR RECEIVING ELECTRICAL POWER FOR HEATING SAID CHAMBER, AT LEAST ONE PAIR OF AUXILIARY FLAT METAL HEATING STRIPS
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) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |