Method of fabricating lead bushings and batteries using same
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United States of America Patent
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Jul 20, 1999
Grant Date -
N/A
app pub date -
Jul 30, 1997
filing date -
Jul 30, 1997
priority date (Note) -
Expired
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Abstract
A method for fabricating bushings for lead-acid cells or batteries is provided which is amenable to automation and control and provides relatively porosity-free bushings comprising utilizing a mold having a cavity in the configuration of the bushing desired and a lead fill unit comprising a lead pot with the molten lead alloy for the bushing and a heated fill line and/or heated fill block wherein the mold and lead fill units are moved into alignment, heating such as induction heating to cause the solidified molten alloy at the end of the heated fill line or in the heated fill block orifice to become molten, gravity filling the mold and then moving the mold and lead fill unit out of alignment, the bushing preferably being cast in an upside-down orientation so as to minimize gas entrainment and/or particulate contamination.
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