Splash proof electromagnetic door holder
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United States of America Patent
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-
Jan 16, 2007
Grant Date -
N/A
app pub date -
Dec 11, 2004
filing date -
Dec 11, 2004
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A splash proof electromagnetic door holder is sealed to prevent failures caused by exposure to moisture. The electromagnetic door holder comprises a ground box, a main housing attached to the ground box, and a coil assembly attached to the main housing. The coil assembly includes a bobbin containing a wire coil. A sealant, preferably epoxy, covers the face of the bobbin to prevent moisture from entering the coil assembly. A seal is incorporated between a coil passage in the main housing and the coil assembly. Seals are included between the main housing and the ground box. The resulting the electromagnetic door holder resists the entry of moisture into the electromagnetic door holder and thereby improves the reliability of the electromagnetic door holder.
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