Alignment device for electromagnetic door lock

Details Alignment device for electromagnetic door lock Alignment device for electromagnetic door lock

1991-09-23

1992-08-25

Moore, Richard E.

Closure fasteners

Magnetic

E05B 4700

Patent

active

051412713

ABSTRACT:
The device includes an electromagnet securing means for holding the electromagnet in a door frame, an electrical conduit connecting the electromagnet to a power source, an armature magnetically attracted to the electromagnet when the latter is energized, and a connector for holding the armature on a door edge for adjustable movement towards the electromagnet. When the armature and electromagnet are in line with each other, the armature is free to move toward the electromagnet. Unlocking is effected by deenergizing the electromagnet and allowing the armature to retract by gravity or spring action, so that the lock component also moves out of the desired engagement. A switch in the bottom of the electromagnet is normally open but is magnetically attracted into the closed position only when the armature is fully aligned therewith by a magnet located in or near the armature. A time delay circuit may be connected to the switch.

REFERENCES:
patent: 3350127 (1965-03-01), Hekelaar
patent: 3794366 (1974-02-01), Graham
patent: 4257631 (1981-03-01), Logan, Jr.
patent: 4401346 (1983-08-01), Jones et al.
patent: 4439808 (1984-03-01), Gillham
patent: 4487439 (1984-12-01), McFadden
patent: 4652028 (1987-03-01), Logan et al.
patent: 4720128 (1988-01-01), Logan, Jr. et al.
patent: 4826223 (1989-05-01), Geringer et al.
patent: 5016929 (1991-05-01), Frolov

Affiliated with

Also associated with

Rating

Alignment device for electromagnetic door lock does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Alignment device for electromagnetic door lock, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Alignment device for electromagnetic door lock will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-380280