US3328150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for blending molten glass
Assignee: OI Glass Inc
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Filing: 1963-04-22
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Granted: 1967-06-27
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Expires: 1983-04-22
Abstract
No abstract record available.
Inventors
- 👤 Robert R Rough
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:11
CPC Classifications
C; C03; C03B; C03B5/00; C03B5/16; C03B5/18; C03B5/187; C03B5/1875; Y; Y02; Y02P; Y02P40/00; Y02P40/50; Y02P40/57
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
IN A FOREHEARTH FOR CONVEYING MOLTEN GLASS FROM A GLASS MELTING FURNACE TO A GOB FORMING DEVICE, THE IMPROVEMENT FOR IMPARTING MIXING WHICH COMPRISES IN COMBINATION THEREWITH THREE SPACED OBSTRUCTIONS HAVING VERTICAL FACING SURFACES AND BEING CONSTRUCTED AND ARRANGED TO DEFINE THEREBETWEEN TWO ZONES CHARACTERIZED BY A MOLTEN GLASS FLOW PATH REPRESENTING AN APPRECIABLE DEPARTURE FROM NORMAL LINEAR FLOW IN SAID CHANNEL, AND A PLURALITY OF ROTATABLE, SCREW-THREAD TYPE STIRRERS SITUATED IN EACH OF SAID ZONES SO THAT THE DISTANCE BETWEEN THE FACING SURFACES OF SAID OBSTRUCTIONS AND THE PERIPHERY OF SAID STIRRERS MEASURES ABOUT ONE-HALF OF THE MAJOR DIAMETER OF SAID SCREW-THREAD TYPE STIRRER.
Claim 2
Dependent Claim
105 words
IN A FOREHEARTH FOR CONVEYING MOLTEN GLASS FROM A GLASS MELTING FURNACE TO A GOB FORMING DEVICE, THE IMPROVEMENT FOR IMPARTING MIXING WHICH COMPRISES IN COMBINATION THEREWITH THREE SPACED OBSTRUCTIONS HAVING VERTICAL FACING SURFACES AND BEING CONSTRUCTED AND ARRANGED TO DEFINE THEREBETWEEN TWO ZONES CHARACTERIZED BY A MOLTEN GLASS FLOW PATH REPRESENTING AN APPRECIABLE DEPARTURE FROM NORMAL LINEAR FLOW IN SAID CHANNEL, AND A PLURALITY OF ROTATABLE, SCREW-THREAD TYPE STIRRERS SITUATED IN EACH OF SAID ZONES SO THAT THE DISTANCE BETWEEN THE FACING SURFACES OF SAID OBSTRUCTIONS AND THE PERIPHERY OF SAID STIRRERS MEASURES ABOUT ONE-HALF OF THE MAJOR DIAMETER OF SAID SCREW-THREAD TYPE STIRRER.
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) | 1970-06-26 | 1970-12-26 | 1971-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-26 | 1974-12-26 | 1975-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-26 | 1978-12-26 | 1979-06-27 | $7700.00 | Window Closed / Lapsed |