Door security system
First Claim
Patent Images
1. A security system for a door comprising:
- frame means adapted for mounting to a door frame;
housing means mounting an electromagnet defining an attraction surface at one side of said housing means;
pivot mounting means for pivotally mounting said housing means to said frame means;
armature means adapted for mounting to a door and attractable by said electromagnet for magnetic bonding therewith; and
switch means mounted at said housing means and actuatable in response to pivotal displacement of said housing means relative to said frame means for generating a first signal.
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Accused Products
Abstract
An exit door security system which employs an electromagnet and armature to lock an exit door comprises an electromagnetic housing and a frame assembly. The housing is pivotally mounted to the frame assembly. An attempt to exit the door causes the housing to pivot to thereby actuate a switch. The lock is automatically released after a pre-established time delay. An alarm at the door may also be actuated by the switch. The electronic circuitry is configured to allow for immediate authorized egress and to implement an immediate safety release of the lock. The lock may be operated in either a normally locked or normally unlocked mode.
40 Citations
38 Claims
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1. A security system for a door comprising:
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frame means adapted for mounting to a door frame; housing means mounting an electromagnet defining an attraction surface at one side of said housing means; pivot mounting means for pivotally mounting said housing means to said frame means; armature means adapted for mounting to a door and attractable by said electromagnet for magnetic bonding therewith; and switch means mounted at said housing means and actuatable in response to pivotal displacement of said housing means relative to said frame means for generating a first signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A security system for a door comprising:
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frame means comprising mounting means and laterally spaced end support means; housing means mounting an electromagnet defining an attraction surface at one side of said housing means; pivot mounting means pivotally mounting said housing means to said end support means, said housing means being received in an enclosure defined by said frame means and pivotal between first and second pivotal positions; armature means attractable by said electromagnet for magnetic bonding therewith; and switch means having an unactuated state at said first position and an actuated state at said second position for generating a first signal. - View Dependent Claims (18, 19)
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20. An exit door security system comprising:
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housing means mounting electromagnet means for generating a magnetic field; armature means adapted for mounting to a door and attractable by said electromagnet means for magnetic bonding therewith; switch means mounted at said housing means and actuatable in response to reactive movement of said housing means resulting from movement of said door for generating an egress request signal; discriminator means for discriminating between door movement resulting from an internal force applied on one side of said door and an external force applied on the other side of said door and generating a discriminator signal indicative thereof; and circuit means responsive to said egress request signal and said discriminator signal for selectively deactivating said electromagnet means. - View Dependent Claims (21, 22, 23, 24, 25, 26)
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27. An exit door security system comprising:
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housing means mounting electromagnetic means activatable for generating a magnetic field; armature means adapted for mounting to a door and attractable by said electromagnetic means for magnetic bonding therewith; switch means mounted at said housing means and actuatable in response to reactive movement of said housing means resulting from movement of said door in an opening direction for generating a first signal; mode means for selectively implementing either a normal activated magnetic bonding mode of said electromagnet means or a normal unactivated bonding mode of said electromagnet means; and delay circuit means responsive to said mode means and said first signal for deactivating said electromagnet means after a pre-established delay interval. - View Dependent Claims (28, 29, 30, 31, 32)
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33. A door security system comprising:
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housing means mounting electromagnet means activatable for generating a magnetic field; armature means adapted for mounting to a door and attractable by said electromagnet means for magnetic bonding therewith; switch means mounted at said housing means and actuatable in responsive to reactive movement of said housing means in response to movement of said door in an opening direction for generating a first signal; light emitting means mounted at said housing means for emitting a visible light; and circuit means responsive to said first signal for deactivating said electromagnetic means after a pre-established delay interval, said circuit means comprising oscillation means for pulsing said light emitting means during said delay interval. - View Dependent Claims (34, 35, 36, 37, 38)
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Specification