Electromagnet Core and Method of Manufacturing the Same
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United States of America Patent
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Issued Date -
Jan 3, 2008
app pub date -
Oct 28, 2004
filing date -
Nov 5, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
To improve chemical resistance and heat resistance of an electromagnet core used for a liquid fuel injector. A core is formed by using a binder for a soft magnetic powder, wherein the binder is made of a polyimide resin having a molecular structure having a thermal and chemical stability. A volume ratio of the binder made of the polyimide resin to the soft magnetic powder is in a range of from 0.05 wt % to 1.0 wt %. Since the heat resistance and the chemical resistance of the core can be improved, the core can be used for a valve control electromagnet used for a liquid fuel injector and effectively operated when the core is attached to an engine.
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