US3352533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stopper for a ladle or similar receptacle
Assignee: Vesuvius Crucible Co
•
Filing: 1964-11-13
•
Granted: 1967-11-14
•
Expires: 1984-11-13
Abstract
No abstract record available.
Inventors
- 👤 Crawford B Murton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:27
CPC Classifications
B; B22; B22D; B22D41/00; B22D41/14; B22D41/16; F; F27; F27D; F27D3/00; F27D3/15; F27D3/1509; F27D3/1536
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A STOPPER FOR A LADLE OR SIMILAR RECEPTACLE COMPRISING A REFRACTORY HEAD HAVING A WELL EXTENDING DOWNWARDLY THEREINTO, A ROD HAVING A LATERAL PROJECTION AT ITS BOTTOM INSERTED DOWNWARDLY INTO THE WELL, INSERT MEANS SEPARATE FROM THE ROD AND HEAD INSERTED DOWNWARDLY INTO THE WELL ABOVE THE LATERAL PROJECTION AT THE BOTTOM OF THE ROD INTO POSITION TO OVERLIE AT LEAST A PORTION OF THE LATERAL PROJECTION AT THE BOTTOM OF THE ROD AND SEAT THEREON AND THEREBY WITHDRAWAL OF THE ROD FROM THE WELL AND CON-
Claim 2
Dependent Claim
87 words
A STOPPER FOR A LADLE OR SIMILAR RECEPTACLE COMPRISING A REFRACTORY HEAD HAVING A WELL EXTENDING DOWNWARDLY THEREINTO, A ROD HAVING A LATERAL PROJECTION AT ITS BOTTOM INSERTED DOWNWARDLY INTO THE WELL, INSERT MEANS SEPARATE FROM THE ROD AND HEAD INSERTED DOWNWARDLY INTO THE WELL ABOVE THE LATERAL PROJECTION AT THE BOTTOM OF THE ROD INTO POSITION TO OVERLIE AT LEAST A PORTION OF THE LATERAL PROJECTION AT THE BOTTOM OF THE ROD AND SEAT THEREON AND THEREBY WITHDRAWAL OF THE ROD FROM THE WELL AND CON-
References Cited (Backward Citations)
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Cited
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US3027611A
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US3040400A
Cited
US3195198A
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US3126593A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |