US3248197A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Enclosed chamber for floating glass on a molten bath
Assignee: PPG Industries Inc
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Filing: 1964-01-29
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Granted: 1966-04-26
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Expires: 1984-01-29
Abstract
No abstract record available.
Inventors
- 👤 Edmund R Michalik
- 👤 George W Misson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:30
CPC Classifications
C; C03; C03B; C03B18/00; C03B18/02; C03B18/04; C03B18/08; C03C; C03C3/00; C03C3/04; C03C3/076; C03C3/083; C03C3/085; C03C3/087; Y; Y02; Y02P; Y02P40/00; Y02P40/50; Y02P40/57
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
AN APPARATUS FOR PRODUCING FLAT GLASS WHEREIN A BODY OF MOLTEN METAL IS DISPOSED THEREIN SO AS TO PROVIDE AN UPPER SURFACE UPON A PORTION OF WHICH SURFACE MOLTEN GLASS IS ADAPTED TO BE SUPPORTED SO THAT A PORTION OF THE UPPER SURFACE OF SAID BODY OF MOLTEM METAL IS BENEATH SAID GLASS AND AN ADJACENT PORTION OF SAID UPPER SURFACE IS FREE OF GLASS, SAID APPARATUS COMPRISING A CLOSED CHAMBER SUBSTANTIALLY FREE FROM ATMOSPHERIC GASES OVERLYING THE SURFACE OF SAID MOLTEN METAL FREE OF GLASS AND AT LEAST A PORTION OF THE MOLTEN GLASS ADJACENT THERETO, MEANS FOR CONTINUOUSLY INTRODUCING MOLTEN METAL INTO SAID APPARATUS, OVERFLOW MEANS FOR SELECTING A LEVEL OF MOLTEN METAL WITHIN SAID APPARATUS, AN OUTLET MEANS IN SAID APPARATUS FOR REMOVING MOLTEN METAL THEREFROM AND MEANS FOR PREVENTING THE FLOW OF ATMOSPHERIC GASES THROUGH SAID OUTLET MEANS INTO SAID APPARATUS.
Claim 2
Independent Claim
145 words
AN APPARATUS FOR PRODUCING FLAT GLASS WHEREIN A BODY OF MOLTEN METAL IS DISPOSED THEREIN SO AS TO PROVIDE AN UPPER SURFACE UPON A PORTION OF WHICH SURFACE MOLTEN GLASS IS ADAPTED TO BE SUPPORTED SO THAT A PORTION OF THE UPPER SURFACE OF SAID BODY OF MOLTEM METAL IS BENEATH SAID GLASS AND AN ADJACENT PORTION OF SAID UPPER SURFACE IS FREE OF GLASS, SAID APPARATUS COMPRISING A CLOSED CHAMBER SUBSTANTIALLY FREE FROM ATMOSPHERIC GASES OVERLYING THE SURFACE OF SAID MOLTEN METAL FREE OF GLASS AND AT LEAST A PORTION OF THE MOLTEN GLASS ADJACENT THERETO, MEANS FOR CONTINUOUSLY INTRODUCING MOLTEN METAL INTO SAID APPARATUS, OVERFLOW MEANS FOR SELECTING A LEVEL OF MOLTEN METAL WITHIN SAID APPARATUS, AN OUTLET MEANS IN SAID APPARATUS FOR REMOVING MOLTEN METAL THEREFROM AND MEANS FOR PREVENTING THE FLOW OF ATMOSPHERIC GASES THROUGH SAID OUTLET MEANS INTO SAID APPARATUS.
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 |