Splash proof electromagnetic door holder

Details Splash proof electromagnetic door holder Splash proof electromagnetic door holder

2007-01-16

2007-01-16

Enad, Elvin (Department: 2832)

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Work or object holding type

C335S280000

Reexamination Certificate

active

11013037

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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