Patent US3183564A successfully refreshed from Google Patents.
US3183564A
Expired / Lapsed
US
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Stopper for a ladle or similar receptacle
Assignee: Vesuvius Crucible Co
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Filing: 1962-12-14
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Granted: 1965-05-18
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Expires: 1982-12-14
Abstract
No abstract record available.
Inventors
- 👤 Crawford B Murton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:17
CPC Classifications
F; F27; F27D; F27D3/00; F27D3/15; F27D3/1509; F27D3/1536; B; B22; B22D; B22D41/00; B22D41/14; B22D41/16; B22D41/18
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
143 words
A STOPPER FOR A LADLE OR SIMILAR RECEPTACLE COMPRISING A STOPPER HEAD HAVING A WELL EXTENDING DOWNWARDLY THEREINTO, THE WALL OF THE WELL HAVING DOWNWARDLY FACING SHOULDER MEANS, A STOPPER ROD HAVING A LATERAL PROJECTION AT ITS BOTTOM INSERTED DOWNWARDLY INTO THE WELL AND ATTACHING MEANS EMBRACING THE BOTTOM OF THE STOPPER ROD, THE ATTACHING MEANS COMPRISING A PLURALITY OF SECTIONS ASSEMBLED ABOUT THE BOTTOM OF THE STOPPER ROD AND HAVING OPPOSED STRAIGHT MEETING FACES, SUCH SECTIONS WHEN SO ASSEMBLED PROVIDING A RADIALLY OUTWARDLY EXTENDING GROOVE FITTING ABOUT THE LATERAL PROJECTION AT THE BOTTOM OF THE STOPPER ROD AND THEREBY PREDETERMINEDLY RELATIVELY POSITIONING THE SECTIONS AXIALLY OF THE STOPPER ROD, THE SECTIONS HAVING EXTERNAL MEANS WHICH WHEN THE SECTIONS ARE THUS ASSEMBLED AND PREDETERMINEDLY RELATIVELY POSITIONED AXIALLY OF THE STOPPER ROD UNDERLIE SAID SHOULDER MEANS WHEREBY TO FASTEN THE ROD TO THE HEAD.
References Cited (Backward Citations)
US416594A
Cited
US1083463A
Cited
US1825177A
Cited
FR1228624A
Cited
US2988791A
Cited
US3091823A
Cited
US3040400A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-05-17 | 1968-11-16 | 1969-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-17 | 1972-11-16 | 1973-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-17 | 1976-11-16 | 1977-05-18 | $7700.00 | Window Closed / Lapsed |