Feeder Element for Metal Casting
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United States of America Patent
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Issued Date -
Jan 15, 2009
app pub date -
Apr 30, 2007
filing date -
Jun 9, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The present invention discloses a feeder element for use in metal casting, said feeder element comprising: (i) a first end for mounting on a mould pattern; (ii) an opposite second end for receiving a feeder sleeve,--and (iii) a bore between--the first and second ends defined by a stepped sidewall; said feeder element being compressible in use whereby to reduce the distance between the first and second ends, wherein the stepped sidewall has a first sidewall region defining the second end of the element and a mounting surface (54) for a feeder sleeve in use, said first sidewall region being inclined to the bore axis by less than 90.degree. and a second sidewall region contiguous with the first sidewall region, said second sidewall region being parallel to or inclined to the bore axis at a different angle to the first sidewall region whereby to define a step in the sidewall. The feeder element offers improvements over the element disclosed in WO2005/051568.
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