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US 2011/0084430 A1Published application
Contoured Molten Metal Filter Cups
OwnerJay R. Hitchings, Jason Hitchingsinventors
Life of this patent
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Abstract
Contoured molten metal filter cups having an interstitial flow space that is maintained between the inner-wall of a molten metal pouring cone, riser sleeve or mold and the outer wall of the filter cup are disclosed. The interstitial space provided by the contoured filter cups results in significantly increased molten metal throughput during casting operations, while simultaneously providing an increased level of filtering efficiency.
Claims26
A molten metal filter cup comprising:
- an upper wall section having an outer surface structured and arranged to contact an inner surface of a molten metal casting structure;
- a generally conical lower wall section below the upper wall section structured and arranged to be spaced an offset distance from the inner surface of the molten metal casting structure when the outer surface of the upper wall section contacts the inner surface of the molten metal casting structure;
- and
- a bottom below the lower wall section.
1 more element
A molten metal filter cup comprising:
- a generally conical upper wall section;
- a lower wall section;
- a transition between the upper and lower wall sections that extends radially inwardly from a lowermost portion of the upper wall section toward an uppermost portion of the lower wall section;
- and
- a bottom below the lower wall section.
2 more elements
A molten metal filter cup comprising:
- a generally conical upper wall section;
- a generally conical lower wall section;
- and
- a transition between the upper and lower wall sections that extends radially inwardly from a lowermost portion of the upper wall section toward an uppermost portion of the lower wall section.
1 more element
Dependencies are inferred from the claim text.