Aluminum ingot casting machine

Metal founding – Means to shape metallic material – Plural independent molds

Reexamination Certificate

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Details

C164S326000, C164S348000

Reexamination Certificate

active

07406997

ABSTRACT:
An aluminum ingot casting machine comprising a source of molten metal, a rotatable annular ring, carrying ingot casting moulds and a drive means for indexing the moulds. The machine includes a vacuum demoulder having a vacuum seal arrangement comprising a sealing element having a flexible core which can deform to form a vacuum seal against an ingot and a flexible abrasion resistant outer layer on said core, and retaining elements located on a lower face of the vacuum lifting head for releasably retaining the sealing element onto the lifting head. The vacuum seal comprises a flexible ring shaped body, being rounded in cross section, having a fiber cord core and an abrasion resistant flexible sheathing surrounding the core.

REFERENCES:
patent: 3174197 (1965-03-01), Stauffer
patent: 3200451 (1965-08-01), Worswick
patent: 3862839 (1975-01-01), Mitsui
patent: 3910620 (1975-10-01), Sperry
patent: 3972368 (1976-08-01), Kikkawa et al.
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patent: 2240332 (1998-12-01), None
patent: 1774997 (1973-10-01), None
patent: 19623214 (1997-01-01), None
patent: 1071562 (1984-02-01), None
patent: WO 02/22292 (2002-03-01), None
patent: WO 02/26421 (2002-04-01), None
Biswas and Davenport, “Extractive Metallurgy of Copper”, Pergamon, Oxford, 1994, pp. 312-315.

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