Pull-apart contact using magnets to complete the circuit

Details Pull-apart contact using magnets to complete the circuit Pull-apart contact using magnets to complete the circuit

2007-02-06

2007-02-06

Hofsass, Jeffery (Department: 2612)

Communications: electrical

Condition responsive indicating system

Specific condition

C307S112000, C200S404000

Reexamination Certificate

active

10989793

ABSTRACT:
An apparatus and method are provided for a security device for residential and/or commercial use. A first magnetic member has a first magnet with a north and south pole, and a second magnetic member has a second magnet with a south and north pole. Contact between the north pole of the first magnet and south pole of the second magnet, or vice versa, completes an electrical circuit by conducting electricity between the first and second magnets, and a magnetic force between the first and second magnets holds the first and second magnets in contact. The electrical circuit is broken when a force sufficient to overcome the magnetic force is applied to separate the first and second magnets. When contact between the first magnet and second magnet is broken off, such as by opening a door or window, the electrical circuit is broken, and an alarm is triggered.

REFERENCES:
patent: 3636484 (1972-01-01), Lea
patent: 6774807 (2004-08-01), Lehfeldt et al.
patent: 7038310 (2006-05-01), Nakatani et al.

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