Patent US3623537A successfully refreshed from Google Patents.
US3623537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Casting of ingots
Assignee: Foseco International Ltd
•
Filing: 1969-11-13
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Granted: 1971-11-30
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Expires: 1989-11-13
Abstract
Abstract Splash during teeming ingots is minimized by locating a foam pad in the ingot mould prior to use.
Inventors
- 👤 Roger Mervyn Hilton
- 👤 John Frances Xavier Watkinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:04
CPC Classifications
B; B22; B22D; B22D7/00; B22D7/12
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
45 words
A method of reducing splash at the commencement Of molten metal teeming into an ingot mould which comprises, prior to the commencement of teeming, locating in the ingot mould a pad of foam material selected from the class consisting of foamed polyurethane and foamed polystyrene.
Claim 2
Independent Claim
45 words
A method of reducing splash at the commencement Of molten metal teeming into an ingot mould which comprises, prior to the commencement of teeming, locating in the ingot mould a pad of foam material selected from the class consisting of foamed polyurethane and foamed polystyrene.
Claim 3
Independent Claim
12 words
A method according to claim wherein the foam material includes flame-retardent additives.
Claim 4
Independent Claim
37 words
A method of reducing splash at the commencement of molten metal teeming into an ingot mould which comprises, prior to the commencement of teeming, locating in the ingot mould a pad of foam material comprising foamed slag.
Claim 5
Independent Claim
37 words
A method of reducing splash at the commencement of molten metal teeming into an ingot mould which comprises, prior to the commencement of teeming, locating in the ingot mould a pad of foam material comprising foamed slag.
Claim 6
Dependent Claim
17 words
A method according to claim 1 wherein the pad of foam material is at least 15-cm. thick.
Claim 7
Dependent Claim
27 words
A method according to claim 1 which includes the step of introducing foam precursors into the ingot mould and generating said pad of foam material in situ.
Claim 8
Dependent Claim
17 words
A method according to claim 1 in which the pad of foam material includes metal treatment agents.
Claim 9
Dependent Claim
26 words
A method according to claim 6 wherein the said agents are selected from the class consisting of fluxing agents, and iron rimming, killing and deoxidizing agents.
Claim 10
Dependent Claim
18 words
A method according to claim 3 wherein the pad of foamed slag is at least 15 cm. thick.
Claim 11
Dependent Claim
27 words
A method according to claim 3 which includes the step of introducing foam precursors into the ingot mould and generating the pad of foamed slag in situ.
Claim 12
Dependent Claim
14 words
A method according to claim 3 wherein the foamed slag includes metal treatment agents.
Claim 13
Dependent Claim
27 words
A method according to claim 10 wherein said metal treatment agents are selected from the class consisting of fluxing agents, and iron rimming, killing and deoxidizing agents.
References Cited (Backward Citations)
US3182363A
Cited
US3195853A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |