US3343936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for skimming dross from a molten metal bath
Assignee: Pilkington Group Ltd
•
Filing: 1964-05-18
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Granted: 1967-09-26
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Expires: 1984-05-18
Abstract
No abstract record available.
Inventors
- 👤 Silverwood Frederick William
- 👤 Heyes Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:18
CPC Classifications
C; C03; C03B; C03B18/00; C03B18/02; C03B18/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
APPARATUS FOR USE IN THE MANUFACTURE OF FLAT GLASS IN RIBBON FORM COMPRISING A TANK CONTAINING A BATH OF MOLTEN METAL, MEANS FOR DELIVERING GLASS TO THE BATH AND ADVANCING THE GLASS ALONG THE BATH IN RIBBON FORM, MEANS DEFINING A ZONE OF THE BATH OF MOLTEN METAL ADJACENT TO THE PATH OF TRAVEL OF THE GLASS ALOANG THE BATH IN WHICH ZONE DROSS IS COLLECTED AND A REGION TO WHICH COLLECTED DROSS MAY BE DIRECTED, AND NON-DIPPING MEANS FOR DIRECTING DROSS ALONG SAID ZONE TO SAID REGION.
Claim 2
Dependent Claim
88 words
APPARATUS FOR USE IN THE MANUFACTURE OF FLAT GLASS IN RIBBON FORM COMPRISING A TANK CONTAINING A BATH OF MOLTEN METAL, MEANS FOR DELIVERING GLASS TO THE BATH AND ADVANCING THE GLASS ALONG THE BATH IN RIBBON FORM, MEANS DEFINING A ZONE OF THE BATH OF MOLTEN METAL ADJACENT TO THE PATH OF TRAVEL OF THE GLASS ALOANG THE BATH IN WHICH ZONE DROSS IS COLLECTED AND A REGION TO WHICH COLLECTED DROSS MAY BE DIRECTED, AND NON-DIPPING MEANS FOR DIRECTING DROSS ALONG SAID ZONE TO SAID REGION.
References Cited (Backward Citations)
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US1538229A
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US2158694A
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US2880876A
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US3083551A
Cited
US3220813A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |