Patent US2730338A successfully refreshed from Google Patents.
US2730338A
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US
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Glass refining apparatus
Assignee: PPG Industries Inc
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Filing: 1951-09-14
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Granted: 1956-01-10
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Expires: 1971-09-14
Abstract
No abstract record available.
Inventors
- 👤 Joseph S Gregorius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:39
CPC Classifications
C; C03; C03B; C03B5/00; C03B5/16; C03B5/18; C03B5/187; C03B5/1875; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18024
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
IN A GLASS HOMOGENIZING APPARATUS, A REFRACTORY STRUCTURE DEFINING AN UPRIGHT CONTAINER HAVING AN INLET AT ITS UPPER PORTION FOR CONVEYING A STREAM OF MOLTEN GLASS THERETO, MEANS FOR MAINTAINING THE GLASS IN MOLTEN FORM, AN UPRIGHT DRIVEN SHAFT ROTATABLE IN THE CONTAINER, SPACED DISKS MOUNTED IN SUBSTANTIALLY HORIZONTAL PLANES UPON THE SHAFT AND IN THE CONTAINER, EACH DISK HAVING A SERIES OF OPENINGS BORED THERETHROUGH, THE AXIS OF BORING OF EACH OPENING BEING DISPOSED OBLIQUELY TO THE MEAN PLANE OF THE DISK IN WHICH IT IS FORMED, THE OBLIQUE ANGULARITY OF THE AXES OF BORING OF THE OPENINGS IN ONE DISK BEING DISPOSED SUBSTANTIALLY OPPOSITELY TO THE OBLIQUE ANGULARITY OF THE AXES OF BORING OF THE OPENINGS IN THE NEXT ADJACENT DISK.
Claim 2
Dependent Claim
123 words
IN A GLASS HOMOGENIZING APPARATUS, A REFRACTORY STRUCTURE DEFINING AN UPRIGHT CONTAINER HAVING AN INLET AT ITS UPPER PORTION FOR CONVEYING A STREAM OF MOLTEN GLASS THERETO, MEANS FOR MAINTAINING THE GLASS IN MOLTEN FORM, AN UPRIGHT DRIVEN SHAFT ROTATABLE IN THE CONTAINER, SPACED DISKS MOUNTED IN SUBSTANTIALLY HORIZONTAL PLANES UPON THE SHAFT AND IN THE CONTAINER, EACH DISK HAVING A SERIES OF OPENINGS BORED THERETHROUGH, THE AXIS OF BORING OF EACH OPENING BEING DISPOSED OBLIQUELY TO THE MEAN PLANE OF THE DISK IN WHICH IT IS FORMED, THE OBLIQUE ANGULARITY OF THE AXES OF BORING OF THE OPENINGS IN ONE DISK BEING DISPOSED SUBSTANTIALLY OPPOSITELY TO THE OBLIQUE ANGULARITY OF THE AXES OF BORING OF THE OPENINGS IN THE NEXT ADJACENT DISK.
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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) | 1959-01-09 | 1959-07-11 | 1960-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-09 | 1963-07-11 | 1964-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-09 | 1967-07-11 | 1968-01-10 | $7700.00 | Window Closed / Lapsed |