US3565412A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for stirring molten metal
Assignee: Dresser Industries Inc
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Filing: 1968-12-03
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Granted: 1971-02-23
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Expires: 1988-12-03
Abstract
Abstract A device, similar to a stopper-rod and stopper head assembly, for immersion in molten metal to provide gaseous agitation thereof.
Inventors
- 👤 Daniel E Moniot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:36
CPC Classifications
B; B22; B22D; B22D45/00; B22D45/005; B22D1/00; B22D1/002; B22D1/005
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
145 words
A device for immersion in molten metal to provide gaseous agitation thereof consisting of an elongated tubular conduit for conveyiNg a gaseous substance, a gas source attached to one end and a gas insufflating head attached to the other end, the head consisting of a outer, cylindrical gas impermeable refractory shell, said shell containing a relatively small, centrally disposed aperture coaxially aligned with the aperture in the tubular conduit, which aperture opens into a larger aperture toward the lower end of the shell, the shell being connected to the conduit by means of a pipe having a lower outer peripheral flange, said pipe passing through the small aperture and being secured to the conduit, the flange being in contact with the surface joining the small aperture to the larger aperture and an inner, porous refractory plug disposed in the larger aperture adjacent the peripheral flange.
Claim 2
Independent Claim
145 words
A device for immersion in molten metal to provide gaseous agitation thereof consisting of an elongated tubular conduit for conveyiNg a gaseous substance, a gas source attached to one end and a gas insufflating head attached to the other end, the head consisting of a outer, cylindrical gas impermeable refractory shell, said shell containing a relatively small, centrally disposed aperture coaxially aligned with the aperture in the tubular conduit, which aperture opens into a larger aperture toward the lower end of the shell, the shell being connected to the conduit by means of a pipe having a lower outer peripheral flange, said pipe passing through the small aperture and being secured to the conduit, the flange being in contact with the surface joining the small aperture to the larger aperture and an inner, porous refractory plug disposed in the larger aperture adjacent the peripheral flange.
Claim 3
Dependent Claim
18 words
The device of claim 1 in which the tubular conduit contains refractory material on the outer surfaces thereof.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |