Patent ID: 7014226

Claim:
An electromagnetic lock device comprising: an outer cover for attaching to a door panel, a receptacle secured to said outer cover, and including a chamber formed therein, a deadbolt slidably engaged in said chamber of said receptacle, and extendible out of said receptacle, for locking the door panel to a door frame, and said deadbolt including a first end having a shaft attached thereto, a housing attached to said receptacle and including a chamber formed therein, an electromagnetic coil received in said housing, a plunger core slidably received in said electromagnetic coil and said housing, and movable and actuatable by said electromagnetic coil, and including a first end having a pin attached thereto, an elbow including a first arm and a second arm perpendicular to each other and secured together to form an L-shaped structure, and having an intermediate connecting portion, said first arm including a first end pivotally secured to said receptacle with an axle, to allow said elbow to be rotated relative to said receptacle, said elbow including an asymmetrical opening formed in said intermediate connecting portion thereof to slidably receive said pin of said plunger core, and to allow said elbow to be rotated relative to said receptacle by said plunger core, said second arm including an oblong hole formed therein to slidably receive said shaft of said deadbolt, and to allow said deadbolt to be forced to move in and out of said receptacle by said plunger core via said elbow when said elbow is rotated relative to said receptacle by said pin of said plunger core, and a spring member engaged with said plunger core, to bias said plunger core out of said housing, and to force said deadbolt to move into said receptacle when said electromagnetic coil is not energized.