US3127262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for refining glass
Assignee: —
•
Filing: —
•
Granted: 1964-03-31
•
Expires: 1981-03-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:03
CPC Classifications
C; C03; C03B; C03B5/00; C03B5/16; C03B5/20; C03B5/26; C03B5/262
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
117 words
A FOREHEARTH FOR CONVEYING AND REFINING MOLTEN GLASS COMPRISING A REFRACTORY CHANNEL HAVING BOTTOM AND SIDE WALLS FOR RETAINING AND CONDUCTING THE MOLTEN GLASS TO A POINT OF USE, HEATING MEANS FOR CONTROLLING THE TEMPERATURE OF MOLTEN GLASS WITHIN SAID FOREHEARTH, AT LEAST ONE REFRACTORY DAM MOUNTED WITHIN AN INTERMEDIATE AREA OF SAID FOREHEARTH IN FULLY SUBMERGED TRANSVERSE RELATION, SAID DAM HAVING A SUBSTANTIAL HEIGHT ADAPTED TO DIVERT UPWARDLY AND OUTWARDLY OBJECTIONABLE BOTTOM GLASS AND PROVIDE ACCELERATED FLOW OF THE ENTIRE STREAM THEREOVER, AND A PAIR OF NARROW PASSAGES HAVING RECEIVING OPENINGS DISPOSED IN CLOSE PROXIMITY TO THE OUTER EXTREMITIES OF SAID DAM FOR SEPARATING SAID OBJECTIONABLE BOTTOM GLASS FROM THE MAIN STREAM OF SAID MOLTEN GLASS.
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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) | 1967-03-31 | 1967-09-30 | 1968-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-31 | 1971-09-30 | 1972-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-31 | 1975-09-30 | 1976-03-31 | $7700.00 | Window Closed / Lapsed |