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US3183564A Expired / Lapsed US ⏱️ 0.0 years remaining

Stopper for a ladle or similar receptacle

Assignee: Vesuvius Crucible Co
•
Filing: 1962-12-14
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Granted: 1965-05-18
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Expires: 1982-12-14
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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

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