Molded ferromagnetic return circuit for a solenoid
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United States of America Patent
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-
Mar 3, 1987
Grant Date -
N/A
app pub date -
May 15, 1986
filing date -
May 15, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An improved solenoid is disclosed. The improvement consists of injection molding one or more components of the magnetic return circuit of the solenoid, particularly the magnetically permeable can, from a polymer having a filler of soft magnetic material at preferably a 20-63% by volume loading level. The injection molded polymer filled solenoid has higher efficiencies than expected based on the decrease in total metal content.
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