Patent US3198618A successfully refreshed from Google Patents.
US3198618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Throatless glass furnace
Assignee: Individual
•
Filing: 1955-03-09
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Granted: 1965-08-03
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Expires: 1975-03-09
Abstract
No abstract record available.
Inventors
- 👤 Harvey L Penberthy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:34
CPC Classifications
C; C03; C03B; C03B5/00; C03B5/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
A THROATLESS GLASS FURNACE COMPRISING IN COMBINATION A TANK FORMING MELTING, FINING AND CONDITIONING ZONES WHICH ARE IN COMMUNICATION WITH ONE ANOTHER AT THE SURFACE OF A GLASS MASS IN SAID TANK, SAID FINING ZONE HAVING A GREATER DEPTH THAN THE CONTIGUOUS SSHALLOW CONDITIONING ZONE, SAID CHANGE IN DEPTH BEING EFFECTED BY A SUBMERGED WALL, AND MEANS SUBSTANTIALLY AT THE FLOOR OF SAID FINING ZONE ADJACENT SAID SUBMERGED WALL FOR CREATING A STREAM OF MOLTEN GLASS RING FROM THE BOTTOM OF SAID FINING ZONE ALONG SAID SUBMERGED WALL TO THE SURFACE OF THE GLASS MASS WHERE IT MUSHROOMS OUT TO CREATE AN UNIMPEDED FLOW OF SURFACE GLASS TOWARDS SAID MELTING ZONE, SAID RISING STREAM OF MOLTEN GLASS AND SAID FLOW OF SURFACE GLASS SERVING TO PREVENT UNMOLTEN BATCH FROM ENTERING SAID CONDITIONING ZONE.
Claim 2
Dependent Claim
133 words
A THROATLESS GLASS FURNACE COMPRISING IN COMBINATION A TANK FORMING MELTING, FINING AND CONDITIONING ZONES WHICH ARE IN COMMUNICATION WITH ONE ANOTHER AT THE SURFACE OF A GLASS MASS IN SAID TANK, SAID FINING ZONE HAVING A GREATER DEPTH THAN THE CONTIGUOUS SSHALLOW CONDITIONING ZONE, SAID CHANGE IN DEPTH BEING EFFECTED BY A SUBMERGED WALL, AND MEANS SUBSTANTIALLY AT THE FLOOR OF SAID FINING ZONE ADJACENT SAID SUBMERGED WALL FOR CREATING A STREAM OF MOLTEN GLASS RING FROM THE BOTTOM OF SAID FINING ZONE ALONG SAID SUBMERGED WALL TO THE SURFACE OF THE GLASS MASS WHERE IT MUSHROOMS OUT TO CREATE AN UNIMPEDED FLOW OF SURFACE GLASS TOWARDS SAID MELTING ZONE, SAID RISING STREAM OF MOLTEN GLASS AND SAID FLOW OF SURFACE GLASS SERVING TO PREVENT UNMOLTEN BATCH FROM ENTERING SAID CONDITIONING ZONE.
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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) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |